Attachment 339505 Details for Bug 185285 – WIP Patch

[patch] WIP Patch

bug-185285.diff (text/plain), 429.57 KB, created by Don Olmstead on 2018-05-03 19:14:01 PDT

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Filename:

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Creator: Don Olmstead

Created: 2018-05-03 19:14:01 PDT

Size: 429.57 KB

patch

obsolete

>diff --git a/Source/WebKit/NetworkProcess/Downloads/DownloadID.h b/Source/WebKit/NetworkProcess/Downloads/DownloadID.h
>index 04df707f87e..a3006b87f57 100644
>--- a/Source/WebKit/NetworkProcess/Downloads/DownloadID.h
>+++ b/Source/WebKit/NetworkProcess/Downloads/DownloadID.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef DownloadID_h
>-#define DownloadID_h
>+#pragma once
> 
> #include "ArgumentCoder.h"
> #include "Decoder.h"
>@@ -93,4 +92,3 @@ template<> struct DefaultHash<WebKit::DownloadID> {
> };
> 
> }
>-#endif /* DownloadID_h */
>diff --git a/Source/WebKit/NetworkProcess/Downloads/soup/DownloadSoupErrors.h b/Source/WebKit/NetworkProcess/Downloads/soup/DownloadSoupErrors.h
>index ff397ec22f7..63b0221c9cc 100644
>--- a/Source/WebKit/NetworkProcess/Downloads/soup/DownloadSoupErrors.h
>+++ b/Source/WebKit/NetworkProcess/Downloads/soup/DownloadSoupErrors.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef DownloadSoupErrors_h
>-#define DownloadSoupErrors_h
>+#pragma once
> 
> #include <WebCore/ResourceHandle.h>
> #include <WebCore/URL.h>
>@@ -37,4 +36,3 @@ WebCore::ResourceError platformDownloadDestinationError(const WebCore::ResourceR
> 
> } // namespace WebKit
> 
>-#endif // DownloadSoupErrors_h
>diff --git a/Source/WebKit/NetworkProcess/NetworkProcessPlatformStrategies.h b/Source/WebKit/NetworkProcess/NetworkProcessPlatformStrategies.h
>index 3a04c9c59fd..9625b1dacb1 100644
>--- a/Source/WebKit/NetworkProcess/NetworkProcessPlatformStrategies.h
>+++ b/Source/WebKit/NetworkProcess/NetworkProcessPlatformStrategies.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkProcessPlatformStrategies_h
>-#define NetworkProcessPlatformStrategies_h
>+#pragma once
> 
> #include <WebCore/LoaderStrategy.h>
> #include <WebCore/PlatformStrategies.h>
>@@ -46,4 +45,3 @@ private:
> } // namespace WebKit
> 
> 
>-#endif // NetworkProcessPlatformStrategies_h
>diff --git a/Source/WebKit/NetworkProcess/NetworkProcessSupplement.h b/Source/WebKit/NetworkProcess/NetworkProcessSupplement.h
>index e2b46b3917b..c8e24ba2d88 100644
>--- a/Source/WebKit/NetworkProcess/NetworkProcessSupplement.h
>+++ b/Source/WebKit/NetworkProcess/NetworkProcessSupplement.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkProcessSupplement_h
>-#define NetworkProcessSupplement_h
>+#pragma once
> 
> #include "ChildProcessSupplement.h"
> 
>@@ -41,4 +40,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // NetworkProcessSupplement_h
>diff --git a/Source/WebKit/NetworkProcess/NetworkResourceLoader.h b/Source/WebKit/NetworkProcess/NetworkResourceLoader.h
>index 57c540d7777..a38d701022a 100644
>--- a/Source/WebKit/NetworkProcess/NetworkResourceLoader.h
>+++ b/Source/WebKit/NetworkProcess/NetworkResourceLoader.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkResourceLoader_h
>-#define NetworkResourceLoader_h
>+#pragma once
> 
> #include "DownloadID.h"
> #include "MessageSender.h"
>@@ -196,4 +195,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // NetworkResourceLoader_h
>diff --git a/Source/WebKit/NetworkProcess/cache/NetworkCacheBlobStorage.h b/Source/WebKit/NetworkProcess/cache/NetworkCacheBlobStorage.h
>index 9613acc1ad5..6d6a4ab07b7 100644
>--- a/Source/WebKit/NetworkProcess/cache/NetworkCacheBlobStorage.h
>+++ b/Source/WebKit/NetworkProcess/cache/NetworkCacheBlobStorage.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkCacheBlobStorage_h
>-#define NetworkCacheBlobStorage_h
>+#pragma once
> 
> #include "NetworkCacheData.h"
> #include "NetworkCacheKey.h"
>@@ -69,4 +68,3 @@ private:
> }
> }
> 
>-#endif
>diff --git a/Source/WebKit/NetworkProcess/cache/NetworkCacheData.h b/Source/WebKit/NetworkProcess/cache/NetworkCacheData.h
>index ecf6d98af69..113890629d1 100644
>--- a/Source/WebKit/NetworkProcess/cache/NetworkCacheData.h
>+++ b/Source/WebKit/NetworkProcess/cache/NetworkCacheData.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkCacheData_h
>-#define NetworkCacheData_h
>+#pragma once
> 
> #include <wtf/FunctionDispatcher.h>
> #include <wtf/SHA1.h>
>@@ -109,4 +108,3 @@ SHA1::Digest computeSHA1(const Data&, const Salt&);
> }
> }
> 
>-#endif
>diff --git a/Source/WebKit/NetworkProcess/cache/NetworkCacheEntry.h b/Source/WebKit/NetworkProcess/cache/NetworkCacheEntry.h
>index 53edef70cc1..f35e6452f12 100644
>--- a/Source/WebKit/NetworkProcess/cache/NetworkCacheEntry.h
>+++ b/Source/WebKit/NetworkProcess/cache/NetworkCacheEntry.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkCacheEntry_h
>-#define NetworkCacheEntry_h
>+#pragma once
> 
> #include "NetworkCacheStorage.h"
> #include "ShareableResource.h"
>@@ -93,4 +92,3 @@ private:
> }
> }
> 
>-#endif
>diff --git a/Source/WebKit/NetworkProcess/cache/NetworkCacheIOChannel.h b/Source/WebKit/NetworkProcess/cache/NetworkCacheIOChannel.h
>index b137fe982fc..3256572d833 100644
>--- a/Source/WebKit/NetworkProcess/cache/NetworkCacheIOChannel.h
>+++ b/Source/WebKit/NetworkProcess/cache/NetworkCacheIOChannel.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkCacheIOChannel_h
>-#define NetworkCacheIOChannel_h
>+#pragma once
> 
> #include "NetworkCacheData.h"
> #include <wtf/Function.h>
>@@ -81,4 +80,3 @@ private:
> }
> }
> 
>-#endif
>diff --git a/Source/WebKit/NetworkProcess/cache/NetworkCacheKey.h b/Source/WebKit/NetworkProcess/cache/NetworkCacheKey.h
>index 2915b214b32..7866edac24f 100644
>--- a/Source/WebKit/NetworkProcess/cache/NetworkCacheKey.h
>+++ b/Source/WebKit/NetworkProcess/cache/NetworkCacheKey.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkCacheKey_h
>-#define NetworkCacheKey_h
>+#pragma once
> 
> #include "NetworkCacheData.h"
> #include <wtf/SHA1.h>
>@@ -135,4 +134,3 @@ template<> struct HashTraits<WebKit::NetworkCache::Key> : SimpleClassHashTraits<
> 
> } // namespace WTF
> 
>-#endif
>diff --git a/Source/WebKit/NetworkProcess/cache/NetworkCacheSpeculativeLoadManager.h b/Source/WebKit/NetworkProcess/cache/NetworkCacheSpeculativeLoadManager.h
>index db6f4f236db..6b5f5e55847 100644
>--- a/Source/WebKit/NetworkProcess/cache/NetworkCacheSpeculativeLoadManager.h
>+++ b/Source/WebKit/NetworkProcess/cache/NetworkCacheSpeculativeLoadManager.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkCacheSpeculativeLoadManager_h
>-#define NetworkCacheSpeculativeLoadManager_h
>+#pragma once
> 
> #if ENABLE(NETWORK_CACHE_SPECULATIVE_REVALIDATION)
> 
>@@ -91,4 +90,3 @@ private:
> 
> #endif // ENABLE(NETWORK_CACHE_SPECULATIVE_REVALIDATION)
> 
>-#endif // NetworkCacheSpeculativeLoadManager_h
>diff --git a/Source/WebKit/NetworkProcess/cache/NetworkCacheStatistics.h b/Source/WebKit/NetworkProcess/cache/NetworkCacheStatistics.h
>index 7771bff4354..2c8c5a714bb 100644
>--- a/Source/WebKit/NetworkProcess/cache/NetworkCacheStatistics.h
>+++ b/Source/WebKit/NetworkProcess/cache/NetworkCacheStatistics.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkCacheStatistics_h
>-#define NetworkCacheStatistics_h
>+#pragma once
> 
> #include "NetworkCache.h"
> #include "NetworkCacheKey.h"
>@@ -90,4 +89,3 @@ private:
> }
> }
> 
>-#endif // NetworkCacheStatistics_h
>diff --git a/Source/WebKit/NetworkProcess/cache/NetworkCacheSubresourcesEntry.h b/Source/WebKit/NetworkProcess/cache/NetworkCacheSubresourcesEntry.h
>index ef252a1c7b9..078e9586828 100644
>--- a/Source/WebKit/NetworkProcess/cache/NetworkCacheSubresourcesEntry.h
>+++ b/Source/WebKit/NetworkProcess/cache/NetworkCacheSubresourcesEntry.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkCacheSubresourcesEntry_h
>-#define NetworkCacheSubresourcesEntry_h
>+#pragma once
> 
> #if ENABLE(NETWORK_CACHE_SPECULATIVE_REVALIDATION)
> 
>@@ -107,4 +106,3 @@ private:
> } // namespace NetworkCache
> 
> #endif // ENABLE(NETWORK_CACHE_SPECULATIVE_REVALIDATION)
>-#endif // NetworkCacheSubresourcesEntry_h
>diff --git a/Source/WebKit/NetworkProcess/capture/json.hpp b/Source/WebKit/NetworkProcess/capture/json.hpp
>index 7c869787f19..479962c5d24 100644
>--- a/Source/WebKit/NetworkProcess/capture/json.hpp
>+++ b/Source/WebKit/NetworkProcess/capture/json.hpp
>@@ -53,8 +53,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
> SOFTWARE.
> */
> 
>-#ifndef NLOHMANN_JSON_HPP
>-#define NLOHMANN_JSON_HPP
>+#pragma once
> 
> #include <algorithm> // all_of, copy, fill, find, for_each, none_of, remove, reverse, transform
> #include <array> // array
>@@ -13027,4 +13026,3 @@ inline nlohmann::json::json_pointer operator "" _json_pointer(const char* s, std
> #undef JSON_THROW
> #undef JSON_TRY
> 
>-#endif
>diff --git a/Source/WebKit/NetworkProcess/unix/NetworkProcessMainUnix.h b/Source/WebKit/NetworkProcess/unix/NetworkProcessMainUnix.h
>index fa064c35876..298a45c6be3 100644
>--- a/Source/WebKit/NetworkProcess/unix/NetworkProcessMainUnix.h
>+++ b/Source/WebKit/NetworkProcess/unix/NetworkProcessMainUnix.h
>@@ -24,8 +24,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkProcessMainUnix_h
>-#define NetworkProcessMainUnix_h
>+#pragma once
> 
> #include <WebKit/WKBase.h>
> 
>@@ -37,4 +36,3 @@ WK_EXPORT int NetworkProcessMainUnix(int argc, char** argv);
> 
> } // namespace WebKit
> 
>-#endif // NetworkProcessMainUnix_h
>diff --git a/Source/WebKit/Platform/IPC/DataReference.h b/Source/WebKit/Platform/IPC/DataReference.h
>index fb57591db64..a504095280a 100644
>--- a/Source/WebKit/Platform/IPC/DataReference.h
>+++ b/Source/WebKit/Platform/IPC/DataReference.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef DataReference_h
>-#define DataReference_h
>+#pragma once
> 
> #include <WebCore/SharedBuffer.h>
> #include <wtf/Vector.h>
>@@ -109,4 +108,3 @@ private:
> 
> } // namespace IPC
> 
>-#endif // DataReference_h
>diff --git a/Source/WebKit/Platform/IPC/MessageFlags.h b/Source/WebKit/Platform/IPC/MessageFlags.h
>index e8d3e5e37bc..4374e455169 100644
>--- a/Source/WebKit/Platform/IPC/MessageFlags.h
>+++ b/Source/WebKit/Platform/IPC/MessageFlags.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef MessageFlags_h
>-#define MessageFlags_h
>+#pragma once
> 
> namespace IPC {
> 
>@@ -36,4 +35,3 @@ enum MessageFlags {
> 
> } // namespace IPC
> 
>-#endif // MessageFlags_h
>diff --git a/Source/WebKit/Platform/IPC/MessageReceiverMap.h b/Source/WebKit/Platform/IPC/MessageReceiverMap.h
>index 4fc751281b0..ce6a76cf7a4 100644
>--- a/Source/WebKit/Platform/IPC/MessageReceiverMap.h
>+++ b/Source/WebKit/Platform/IPC/MessageReceiverMap.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef MessageReceiverMap_h
>-#define MessageReceiverMap_h
>+#pragma once
> 
> #include "StringReference.h"
> #include <wtf/HashMap.h>
>@@ -63,4 +62,3 @@ private:
> 
> };
> 
>-#endif // MessageReceiverMap_h
>diff --git a/Source/WebKit/Platform/IPC/StringReference.h b/Source/WebKit/Platform/IPC/StringReference.h
>index e98e91119ce..d4a915fe571 100644
>--- a/Source/WebKit/Platform/IPC/StringReference.h
>+++ b/Source/WebKit/Platform/IPC/StringReference.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef StringReference_h
>-#define StringReference_h
>+#pragma once
> 
> #include <string.h>
> #include <wtf/Forward.h>
>@@ -99,4 +98,3 @@ template<> struct HashTraits<IPC::StringReference> : GenericHashTraits<IPC::Stri
> 
> } // namespace WTF
> 
>-#endif // StringReference_h
>diff --git a/Source/WebKit/Platform/IPC/glib/GSocketMonitor.h b/Source/WebKit/Platform/IPC/glib/GSocketMonitor.h
>index 8ac5f1c706c..d084b26dee2 100644
>--- a/Source/WebKit/Platform/IPC/glib/GSocketMonitor.h
>+++ b/Source/WebKit/Platform/IPC/glib/GSocketMonitor.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef GSocketMonitor_h
>-#define GSocketMonitor_h
>+#pragma once
> 
> #include <glib.h>
> #include <wtf/Forward.h>
>@@ -55,4 +54,3 @@ private:
> 
> } // namespace IPC
> 
>-#endif // GSocketMonitor_h
>diff --git a/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h b/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h
>index f7687a7b789..deae6017ffd 100644
>--- a/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h
>+++ b/Source/WebKit/Platform/IPC/mac/ImportanceAssertion.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ImportanceAssertion_h
>-#define ImportanceAssertion_h
>+#pragma once
> 
> #if PLATFORM(MAC)
> 
>@@ -60,4 +59,3 @@ private:
> 
> #endif // PLATFORM(MAC)
> 
>-#endif // ImportanceAssertion_h
>diff --git a/Source/WebKit/Platform/IPC/mac/MachPort.h b/Source/WebKit/Platform/IPC/mac/MachPort.h
>index 9144a052ea0..1d3f941acb5 100644
>--- a/Source/WebKit/Platform/IPC/mac/MachPort.h
>+++ b/Source/WebKit/Platform/IPC/mac/MachPort.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef MachPort_h
>-#define MachPort_h
>+#pragma once
> 
> #include "Attachment.h"
> #include "Decoder.h"
>@@ -72,4 +71,3 @@ private:
> 
> } // namespace IPC
> 
>-#endif // MachPort_h
>diff --git a/Source/WebKit/Platform/cg/CGUtilities.h b/Source/WebKit/Platform/cg/CGUtilities.h
>index 851d181a8fc..2a800e4783c 100644
>--- a/Source/WebKit/Platform/cg/CGUtilities.h
>+++ b/Source/WebKit/Platform/cg/CGUtilities.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef CGUtilities_h
>-#define CGUtilities_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -32,4 +31,3 @@ void paintImage(CGContextRef, CGImageRef, CGFloat scaleFactor, CGPoint destinati
> 
> } // namespace WebKit
> 
>-#endif // CGUtilities_h
>diff --git a/Source/WebKit/Platform/mac/MachUtilities.h b/Source/WebKit/Platform/mac/MachUtilities.h
>index a8d0d6ffe3c..3b5c3e71ea3 100644
>--- a/Source/WebKit/Platform/mac/MachUtilities.h
>+++ b/Source/WebKit/Platform/mac/MachUtilities.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef MachUtilities_h
>-#define MachUtilities_h
>+#pragma once
> 
> #include <mach/mach_port.h>
> 
>@@ -33,4 +32,3 @@ void setMachPortQueueLength(mach_port_t, mach_port_msgcount_t queueLength);
> mach_port_t machExceptionPort();
> void setMachExceptionPort(mach_port_t exceptionPort);
> 
>-#endif // MachUtilities_h
>diff --git a/Source/WebKit/Platform/mac/MenuUtilities.h b/Source/WebKit/Platform/mac/MenuUtilities.h
>index 200e9ca9417..c3af46db0cf 100644
>--- a/Source/WebKit/Platform/mac/MenuUtilities.h
>+++ b/Source/WebKit/Platform/mac/MenuUtilities.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef MenuUtilities_h
>-#define MenuUtilities_h
>+#pragma once
> 
> #import <wtf/text/WTFString.h>
> 
>@@ -38,4 +37,3 @@ NSString *menuItemTitleForTelephoneNumberGroup();
> 
> } // namespace WebKit
> 
>-#endif // MenuUtilities_h
>diff --git a/Source/WebKit/Platform/spi/ios/UIKitSPI.h b/Source/WebKit/Platform/spi/ios/UIKitSPI.h
>index 4d845ee1bc0..bb8f40e3ec6 100644
>--- a/Source/WebKit/Platform/spi/ios/UIKitSPI.h
>+++ b/Source/WebKit/Platform/spi/ios/UIKitSPI.h
>@@ -234,8 +234,7 @@ typedef enum {
> @end
> 
> // FIXME: https://bugs.webkit.org/show_bug.cgi?id=173341
>-#ifndef _WEBKIT_UIKITSPI_UIKEYBOARD
>-#define _WEBKIT_UIKITSPI_UIKEYBOARD 1
>+#pragma once
> @interface UIKeyboard : UIView <UIKeyboardImplGeometryDelegate>
> @end
> #endif
>@@ -1008,7 +1007,6 @@ static inline bool currentUserInterfaceIdiomIsPad()
>     return UICurrentUserInterfaceIdiomIsPad();
> #else
>     return [[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad;
>-#endif
> }
> 
> WTF_EXTERN_C_BEGIN
>diff --git a/Source/WebKit/Platform/win/LoggingWin.cpp b/Source/WebKit/Platform/win/LoggingWin.cpp
>index d0638d313a6..e4ed96bb1a5 100644
>--- a/Source/WebKit/Platform/win/LoggingWin.cpp
>+++ b/Source/WebKit/Platform/win/LoggingWin.cpp
>@@ -29,6 +29,7 @@
> 
> #if !LOG_DISABLED || !RELEASE_LOG_DISABLED
> 
>+#include <windows.h>
> #include <wtf/StdLibExtras.h>
> #include <wtf/text/WTFString.h>
> 
>diff --git a/Source/WebKit/PluginProcess/PluginCreationParameters.h b/Source/WebKit/PluginProcess/PluginCreationParameters.h
>index c3751682cc1..7c72a330ef1 100644
>--- a/Source/WebKit/PluginProcess/PluginCreationParameters.h
>+++ b/Source/WebKit/PluginProcess/PluginCreationParameters.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginCreationParameters_h
>-#define PluginCreationParameters_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -78,4 +77,3 @@ struct PluginCreationParameters {
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // PluginCreationParameters_h
>diff --git a/Source/WebKit/PluginProcess/unix/PluginProcessMainUnix.h b/Source/WebKit/PluginProcess/unix/PluginProcessMainUnix.h
>index f79c1d26ce2..da568e17484 100644
>--- a/Source/WebKit/PluginProcess/unix/PluginProcessMainUnix.h
>+++ b/Source/WebKit/PluginProcess/unix/PluginProcessMainUnix.h
>@@ -24,8 +24,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginProcessMainUnix_h
>-#define PluginProcessMainUnix_h
>+#pragma once
> 
> #include <WebKit/WKBase.h>
> 
>@@ -37,4 +36,3 @@ WK_EXPORT int PluginProcessMainUnix(int argc, char** argv);
> 
> } // namespace WebKit
> 
>-#endif // PluginProcessMainUnix_h
>diff --git a/Source/WebKit/Shared/API/APIArray.h b/Source/WebKit/Shared/API/APIArray.h
>index 1fef069323f..e2b7d739293 100644
>--- a/Source/WebKit/Shared/API/APIArray.h
>+++ b/Source/WebKit/Shared/API/APIArray.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIArray_h
>-#define APIArray_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/Forward.h>
>@@ -109,4 +108,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIArray_h
>diff --git a/Source/WebKit/Shared/API/APIClient.h b/Source/WebKit/Shared/API/APIClient.h
>index c12e30b03d6..eb1ef9438ca 100644
>--- a/Source/WebKit/Shared/API/APIClient.h
>+++ b/Source/WebKit/Shared/API/APIClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIClient_h
>-#define APIClient_h
>+#pragma once
> 
> #include <algorithm>
> #include <array>
>@@ -83,4 +82,3 @@ protected:
> 
> } // namespace API
> 
>-#endif // APIClient_h
>diff --git a/Source/WebKit/Shared/API/APIData.h b/Source/WebKit/Shared/API/APIData.h
>index 16600cb504c..3ee67530538 100644
>--- a/Source/WebKit/Shared/API/APIData.h
>+++ b/Source/WebKit/Shared/API/APIData.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIData_h
>-#define APIData_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "DataReference.h"
>@@ -106,4 +105,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIData_h
>diff --git a/Source/WebKit/Shared/API/APIDictionary.h b/Source/WebKit/Shared/API/APIDictionary.h
>index fcba7238176..3c82e2df933 100644
>--- a/Source/WebKit/Shared/API/APIDictionary.h
>+++ b/Source/WebKit/Shared/API/APIDictionary.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIDictionary_h
>-#define APIDictionary_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/HashMap.h>
>@@ -87,4 +86,3 @@ protected:
> 
> } // namespace API
> 
>-#endif // APIDictionary_h
>diff --git a/Source/WebKit/Shared/API/APIError.h b/Source/WebKit/Shared/API/APIError.h
>index 442d676ed27..d0dd23c351f 100644
>--- a/Source/WebKit/Shared/API/APIError.h
>+++ b/Source/WebKit/Shared/API/APIError.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIError_h
>-#define APIError_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/ResourceError.h>
>@@ -122,4 +121,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIError_h
>diff --git a/Source/WebKit/Shared/API/APIFrameHandle.h b/Source/WebKit/Shared/API/APIFrameHandle.h
>index b10e808a4b1..7b403dac8ee 100644
>--- a/Source/WebKit/Shared/API/APIFrameHandle.h
>+++ b/Source/WebKit/Shared/API/APIFrameHandle.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIFrameHandle_h
>-#define APIFrameHandle_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/Ref.h>
>@@ -57,4 +56,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIFrameHandle_h
>diff --git a/Source/WebKit/Shared/API/APIGeometry.h b/Source/WebKit/Shared/API/APIGeometry.h
>index 0ff94cca943..6710dd1154f 100644
>--- a/Source/WebKit/Shared/API/APIGeometry.h
>+++ b/Source/WebKit/Shared/API/APIGeometry.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIGeometry_h
>-#define APIGeometry_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "WKGeometry.h"
>@@ -101,4 +100,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIGeometry_h
>diff --git a/Source/WebKit/Shared/API/APINumber.h b/Source/WebKit/Shared/API/APINumber.h
>index fe5734981c5..70db8230f39 100644
>--- a/Source/WebKit/Shared/API/APINumber.h
>+++ b/Source/WebKit/Shared/API/APINumber.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APINumber_h
>-#define APINumber_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "Decoder.h"
>@@ -72,4 +71,3 @@ typedef Number<uint64_t, API::Object::Type::UInt64> UInt64;
> 
> } // namespace API
> 
>-#endif // APINumber_h
>diff --git a/Source/WebKit/Shared/API/APIObject.h b/Source/WebKit/Shared/API/APIObject.h
>index 75572a6dbb0..92fd646925c 100644
>--- a/Source/WebKit/Shared/API/APIObject.h
>+++ b/Source/WebKit/Shared/API/APIObject.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIObject_h
>-#define APIObject_h
>+#pragma once
> 
> #include <wtf/RefCounted.h>
> #include <wtf/RefPtr.h>
>@@ -281,4 +280,3 @@ inline API::Object* Object::unwrap(void* object)
> 
> #undef DELEGATE_REF_COUNTING_TO_COCOA
> 
>-#endif // APIObject_h
>diff --git a/Source/WebKit/Shared/API/APIPageGroupHandle.h b/Source/WebKit/Shared/API/APIPageGroupHandle.h
>index eaca5dfbd9b..a8664d7a3ee 100644
>--- a/Source/WebKit/Shared/API/APIPageGroupHandle.h
>+++ b/Source/WebKit/Shared/API/APIPageGroupHandle.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIPageGroupHandle_h
>-#define APIPageGroupHandle_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "WebPageGroupData.h"
>@@ -56,4 +55,3 @@ private:
> } // namespace API
> 
> 
>-#endif // APIPageGroupHandle_h
>diff --git a/Source/WebKit/Shared/API/APIPageHandle.h b/Source/WebKit/Shared/API/APIPageHandle.h
>index f30fafbdc31..f52436ed0ac 100644
>--- a/Source/WebKit/Shared/API/APIPageHandle.h
>+++ b/Source/WebKit/Shared/API/APIPageHandle.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIPageHandle_h
>-#define APIPageHandle_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/Ref.h>
>@@ -57,4 +56,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIPageHandle_h
>diff --git a/Source/WebKit/Shared/API/APISerializedScriptValue.h b/Source/WebKit/Shared/API/APISerializedScriptValue.h
>index 54c34e8884c..ffec57b226c 100644
>--- a/Source/WebKit/Shared/API/APISerializedScriptValue.h
>+++ b/Source/WebKit/Shared/API/APISerializedScriptValue.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APISerializedScriptValue_h
>-#define APISerializedScriptValue_h
>+#pragma once
> 
> #include "APIObject.h"
> 
>@@ -78,4 +77,3 @@ private:
>     
> }
> 
>-#endif
>diff --git a/Source/WebKit/Shared/API/APIString.h b/Source/WebKit/Shared/API/APIString.h
>index 2722b1b8b87..e11f328affb 100644
>--- a/Source/WebKit/Shared/API/APIString.h
>+++ b/Source/WebKit/Shared/API/APIString.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIString_h
>-#define APIString_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/Ref.h>
>@@ -76,4 +75,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // APIString_h
>diff --git a/Source/WebKit/Shared/API/APIURL.h b/Source/WebKit/Shared/API/APIURL.h
>index 7e0fae174aa..e37875d2fe0 100644
>--- a/Source/WebKit/Shared/API/APIURL.h
>+++ b/Source/WebKit/Shared/API/APIURL.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebURL_h
>-#define WebURL_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "WebCoreArgumentCoders.h"
>@@ -131,4 +130,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // URL_h
>diff --git a/Source/WebKit/Shared/API/APIURLResponse.h b/Source/WebKit/Shared/API/APIURLResponse.h
>index 125e03711b3..e3831a2d74a 100644
>--- a/Source/WebKit/Shared/API/APIURLResponse.h
>+++ b/Source/WebKit/Shared/API/APIURLResponse.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIURLResponse_h
>-#define APIURLResponse_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/ResourceResponse.h>
>@@ -57,4 +56,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIURLResponse_h
>diff --git a/Source/WebKit/Shared/API/APIUserContentURLPattern.h b/Source/WebKit/Shared/API/APIUserContentURLPattern.h
>index aff46131061..16714e92fd8 100644
>--- a/Source/WebKit/Shared/API/APIUserContentURLPattern.h
>+++ b/Source/WebKit/Shared/API/APIUserContentURLPattern.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIUserContentURLPattern_h
>-#define APIUserContentURLPattern_h
>+#pragma once
> 
> #include "APIObject.h"
> 
>@@ -61,4 +60,3 @@ private:
> 
> }
> 
>-#endif
>diff --git a/Source/WebKit/Shared/API/Cocoa/RemoteObjectInvocation.h b/Source/WebKit/Shared/API/Cocoa/RemoteObjectInvocation.h
>index 48a700f1240..0b4233ea8ce 100644
>--- a/Source/WebKit/Shared/API/Cocoa/RemoteObjectInvocation.h
>+++ b/Source/WebKit/Shared/API/Cocoa/RemoteObjectInvocation.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef RemoteObjectInvocation_h
>-#define RemoteObjectInvocation_h
>+#pragma once
> 
> #include "APIDictionary.h"
> #include <wtf/text/WTFString.h>
>@@ -68,4 +67,3 @@ private:
> 
> }
> 
>-#endif // RemoteObjectInvocation_h
>diff --git a/Source/WebKit/Shared/API/Cocoa/RemoteObjectRegistry.h b/Source/WebKit/Shared/API/Cocoa/RemoteObjectRegistry.h
>index 12f96f472e8..f9fb156b3c3 100644
>--- a/Source/WebKit/Shared/API/Cocoa/RemoteObjectRegistry.h
>+++ b/Source/WebKit/Shared/API/Cocoa/RemoteObjectRegistry.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef RemoteObjectRegistry_h
>-#define RemoteObjectRegistry_h
>+#pragma once
> 
> #include "MessageReceiver.h"
> 
>@@ -63,4 +62,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // RemoteObjectRegistry_h
>diff --git a/Source/WebKit/Shared/API/c/win/WKBaseWin.h b/Source/WebKit/Shared/API/c/win/WKBaseWin.h
>index 327768f5687..286b9b2b265 100644
>--- a/Source/WebKit/Shared/API/c/win/WKBaseWin.h
>+++ b/Source/WebKit/Shared/API/c/win/WKBaseWin.h
>@@ -24,7 +24,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKBaseWin_h
>+#define WKBaseWin_h
> 
> #ifndef WKBase_h
> #error "Please #include \"WKBase.h\" instead of this file directly."
>@@ -34,3 +35,5 @@ typedef int pid_t;
> 
> typedef const struct OpaqueWKView* WKViewRef;
> typedef const struct OpaqueWKEditCommand* WKEditCommandRef;
>+
>+#endif
>diff --git a/Source/WebKit/Shared/API/glib/WebKitURIRequestPrivate.h b/Source/WebKit/Shared/API/glib/WebKitURIRequestPrivate.h
>index 12586153ba2..9a9b2217734 100644
>--- a/Source/WebKit/Shared/API/glib/WebKitURIRequestPrivate.h
>+++ b/Source/WebKit/Shared/API/glib/WebKitURIRequestPrivate.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebKitURIRequestPrivate_h
>-#define WebKitURIRequestPrivate_h
>+#pragma once
> 
> #include "WebKitURIRequest.h"
> #include <WebCore/ResourceRequest.h>
>@@ -32,4 +31,3 @@
> WebKitURIRequest* webkitURIRequestCreateForResourceRequest(const WebCore::ResourceRequest&);
> void webkitURIRequestGetResourceRequest(WebKitURIRequest*, WebCore::ResourceRequest&);
> 
>-#endif // WebKitURIRequestPrivate_h
>diff --git a/Source/WebKit/Shared/API/glib/WebKitURIResponsePrivate.h b/Source/WebKit/Shared/API/glib/WebKitURIResponsePrivate.h
>index c2dc49c1779..fe2ab5a351a 100644
>--- a/Source/WebKit/Shared/API/glib/WebKitURIResponsePrivate.h
>+++ b/Source/WebKit/Shared/API/glib/WebKitURIResponsePrivate.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebKitURIResponsePrivate_h
>-#define WebKitURIResponsePrivate_h
>+#pragma once
> 
> #include "WebKitURIResponse.h"
> #include <WebCore/ResourceResponse.h>
>@@ -32,4 +31,3 @@
> WebKitURIResponse* webkitURIResponseCreateForResourceResponse(const WebCore::ResourceResponse&);
> const WebCore::ResourceResponse& webkitURIResponseGetResourceResponse(WebKitURIResponse*);
> 
>-#endif // WebKitURIResponsePrivate_h
>diff --git a/Source/WebKit/Shared/APIWebArchive.h b/Source/WebKit/Shared/APIWebArchive.h
>index 71de28bda74..3b23a7458cb 100644
>--- a/Source/WebKit/Shared/APIWebArchive.h
>+++ b/Source/WebKit/Shared/APIWebArchive.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebArchive_h
>-#define WebArchive_h
>+#pragma once
> 
> #if PLATFORM(COCOA)
> 
>@@ -77,4 +76,3 @@ private:
> 
> #endif // PLATFORM(COCOA)
> 
>-#endif // WebArchive_h
>diff --git a/Source/WebKit/Shared/APIWebArchiveResource.h b/Source/WebKit/Shared/APIWebArchiveResource.h
>index 9cd1c1c4279..d1cb68a6e0d 100644
>--- a/Source/WebKit/Shared/APIWebArchiveResource.h
>+++ b/Source/WebKit/Shared/APIWebArchiveResource.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebArchiveResource_h
>-#define WebArchiveResource_h
>+#pragma once
> 
> #if PLATFORM(COCOA)
> 
>@@ -68,4 +67,3 @@ private:
> 
> #endif // PLATFORM(COCOA)
> 
>-#endif // WebArchiveResource_h
>diff --git a/Source/WebKit/Shared/ActivityAssertion.h b/Source/WebKit/Shared/ActivityAssertion.h
>index b5a19f908f4..6a13f0a74f5 100644
>--- a/Source/WebKit/Shared/ActivityAssertion.h
>+++ b/Source/WebKit/Shared/ActivityAssertion.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ActivityAssertion_h
>-#define ActivityAssertion_h
>+#pragma once
> 
> #include <WebCore/CountedUserActivity.h>
> #include <wtf/Noncopyable.h>
>@@ -43,4 +42,3 @@ private:
> 
> }
> 
>-#endif
>diff --git a/Source/WebKit/Shared/AsyncRequest.h b/Source/WebKit/Shared/AsyncRequest.h
>index cdc632ec7ca..6801548104f 100644
>--- a/Source/WebKit/Shared/AsyncRequest.h
>+++ b/Source/WebKit/Shared/AsyncRequest.h
>@@ -24,8 +24,7 @@
>  *
>  */
> 
>-#ifndef AsyncRequest_h
>-#define AsyncRequest_h
>+#pragma once
> 
> #include <wtf/Function.h>
> #include <wtf/HashMap.h>
>@@ -152,4 +151,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // AsyncRequest_h
>diff --git a/Source/WebKit/Shared/Authentication/AuthenticationManager.h b/Source/WebKit/Shared/Authentication/AuthenticationManager.h
>index 6c30c04fdd0..46e74774311 100644
>--- a/Source/WebKit/Shared/Authentication/AuthenticationManager.h
>+++ b/Source/WebKit/Shared/Authentication/AuthenticationManager.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef AuthenticationManager_h
>-#define AuthenticationManager_h
>+#pragma once
> 
> #include "MessageReceiver.h"
> #include "NetworkProcessSupplement.h"
>@@ -116,4 +115,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // AuthenticationManager_h
>diff --git a/Source/WebKit/Shared/BlobDataFileReferenceWithSandboxExtension.h b/Source/WebKit/Shared/BlobDataFileReferenceWithSandboxExtension.h
>index 75a5d4d0cbb..3e1078b98cd 100644
>--- a/Source/WebKit/Shared/BlobDataFileReferenceWithSandboxExtension.h
>+++ b/Source/WebKit/Shared/BlobDataFileReferenceWithSandboxExtension.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef BlobDataFileReferenceWithSandboxExtension_h
>-#define BlobDataFileReferenceWithSandboxExtension_h
>+#pragma once
> 
> #include <WebCore/BlobDataFileReference.h>
> 
>@@ -51,4 +50,3 @@ private:
> 
> }
> 
>-#endif // BlobDataFileReferenceWithSandboxExtension_h
>diff --git a/Source/WebKit/Shared/BlockingResponseMap.h b/Source/WebKit/Shared/BlockingResponseMap.h
>index 728c8477bf9..5f5a46fee2a 100644
>--- a/Source/WebKit/Shared/BlockingResponseMap.h
>+++ b/Source/WebKit/Shared/BlockingResponseMap.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef BlockingResponseMap_h
>-#define BlockingResponseMap_h
>+#pragma once
> 
> #include <wtf/Condition.h>
> #include <wtf/HashMap.h>
>@@ -82,4 +81,3 @@ private:
>     bool m_canceled;
> };
> 
>-#endif // BlockingResponseMap_h
>diff --git a/Source/WebKit/Shared/ChildProcess.h b/Source/WebKit/Shared/ChildProcess.h
>index c6e4edf8bf9..fa0d4bdfff0 100644
>--- a/Source/WebKit/Shared/ChildProcess.h
>+++ b/Source/WebKit/Shared/ChildProcess.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ChildProcess_h
>-#define ChildProcess_h
>+#pragma once
> 
> #include "Connection.h"
> #include "MessageReceiverMap.h"
>@@ -145,4 +144,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // ChildProcess_h
>diff --git a/Source/WebKit/Shared/ChildProcessSupplement.h b/Source/WebKit/Shared/ChildProcessSupplement.h
>index dfbefbaa14b..7753c00242c 100644
>--- a/Source/WebKit/Shared/ChildProcessSupplement.h
>+++ b/Source/WebKit/Shared/ChildProcessSupplement.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ChildProcessSupplement_h
>-#define ChildProcessSupplement_h
>+#pragma once
> 
> namespace IPC {
> class Connection;
>@@ -45,4 +44,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // ChildProcessSupplement_h
>diff --git a/Source/WebKit/Shared/Cocoa/DataDetectionResult.h b/Source/WebKit/Shared/Cocoa/DataDetectionResult.h
>index 27443ce3f3b..31b2d9de025 100644
>--- a/Source/WebKit/Shared/Cocoa/DataDetectionResult.h
>+++ b/Source/WebKit/Shared/Cocoa/DataDetectionResult.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef DataDetectionResult_h
>-#define DataDetectionResult_h
>+#pragma once
> 
> #if ENABLE(DATA_DETECTION)
> 
>@@ -45,4 +44,3 @@ struct DataDetectionResult {
> 
> #endif // ENABLE(DATA_DETECTION)
> 
>-#endif // DataDetectionResult_h
>diff --git a/Source/WebKit/Shared/ContextMenuContextData.h b/Source/WebKit/Shared/ContextMenuContextData.h
>index 734973ae08d..d3daf61264d 100644
>--- a/Source/WebKit/Shared/ContextMenuContextData.h
>+++ b/Source/WebKit/Shared/ContextMenuContextData.h
>@@ -24,8 +24,7 @@
>  *
>  */
> 
>-#ifndef ContextMenuContextData_h
>-#define ContextMenuContextData_h
>+#pragma once
> 
> #if ENABLE(CONTEXT_MENUS)
> 
>@@ -102,4 +101,3 @@ private:
> } // namespace WebKit
> 
> #endif // ENABLE(CONTEXT_MENUS)
>-#endif // ContextMenuContextData_h
>diff --git a/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedBackingStore.h b/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedBackingStore.h
>index 44d5cfdb494..016cfd7c724 100644
>--- a/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedBackingStore.h
>+++ b/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedBackingStore.h
>@@ -17,8 +17,7 @@
>  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef CoordinatedBackingStore_h
>-#define CoordinatedBackingStore_h
>+#pragma once
> 
> #if USE(COORDINATED_GRAPHICS)
> 
>@@ -89,4 +88,3 @@ private:
> 
> #endif // USE(COORDINATED_GRAPHICS)
> 
>-#endif // CoordinatedBackingStore_h
>diff --git a/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedGraphicsScene.h b/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedGraphicsScene.h
>index c5bcb5064ed..369a0171b67 100644
>--- a/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedGraphicsScene.h
>+++ b/Source/WebKit/Shared/CoordinatedGraphics/CoordinatedGraphicsScene.h
>@@ -18,8 +18,7 @@
>     Boston, MA 02110-1301, USA.
> */
> 
>-#ifndef CoordinatedGraphicsScene_h
>-#define CoordinatedGraphicsScene_h
>+#pragma once
> 
> #if USE(COORDINATED_GRAPHICS)
> 
>@@ -168,6 +167,5 @@ private:
> 
> #endif // USE(COORDINATED_GRAPHICS)
> 
>-#endif // CoordinatedGraphicsScene_h
> 
> 
>diff --git a/Source/WebKit/Shared/CoordinatedGraphics/SimpleViewportController.h b/Source/WebKit/Shared/CoordinatedGraphics/SimpleViewportController.h
>index 0bd1a35874d..fc42214ba16 100644
>--- a/Source/WebKit/Shared/CoordinatedGraphics/SimpleViewportController.h
>+++ b/Source/WebKit/Shared/CoordinatedGraphics/SimpleViewportController.h
>@@ -19,8 +19,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef SimpleViewportController_h
>-#define SimpleViewportController_h
>+#pragma once
> 
> #if USE(COORDINATED_GRAPHICS_THREADED)
> 
>@@ -78,4 +77,3 @@ private:
> 
> #endif // USE(COORDINATED_GRAPHICS_THREADED)
> 
>-#endif // SimpleViewportController_h
>diff --git a/Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/CompositingRunLoop.h b/Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/CompositingRunLoop.h
>index 42c52f6be82..302c2aa8471 100644
>--- a/Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/CompositingRunLoop.h
>+++ b/Source/WebKit/Shared/CoordinatedGraphics/threadedcompositor/CompositingRunLoop.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef CompositingRunLoop_h
>-#define CompositingRunLoop_h
>+#pragma once
> 
> #if USE(COORDINATED_GRAPHICS_THREADED)
> 
>@@ -89,4 +88,3 @@ private:
> 
> #endif // USE(COORDINATED_GRAPHICS_THREADED)
> 
>-#endif // CompositingRunLoop_h
>diff --git a/Source/WebKit/Shared/Databases/IndexedDB/IDBUtilities.h b/Source/WebKit/Shared/Databases/IndexedDB/IDBUtilities.h
>index f7d4325f01a..3383521785a 100644
>--- a/Source/WebKit/Shared/Databases/IndexedDB/IDBUtilities.h
>+++ b/Source/WebKit/Shared/Databases/IndexedDB/IDBUtilities.h
>@@ -24,8 +24,7 @@
>  *
>  */
> 
>-#ifndef IDBUtilities_h
>-#define IDBUtilities_h
>+#pragma once
> 
> #include <wtf/text/WTFString.h>
> 
>@@ -44,4 +43,3 @@ String uniqueDatabaseIdentifier(const String& databaseName, const WebCore::Secur
> } // namespace WebKit
> 
> #endif // ENABLE(INDEXED_DATABASE)
>-#endif // IDBUtilities_h
>diff --git a/Source/WebKit/Shared/DrawingAreaInfo.h b/Source/WebKit/Shared/DrawingAreaInfo.h
>index 7fc4d7c4b3f..208e130e900 100644
>--- a/Source/WebKit/Shared/DrawingAreaInfo.h
>+++ b/Source/WebKit/Shared/DrawingAreaInfo.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef DrawingAreaType_h
>-#define DrawingAreaType_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -41,4 +40,3 @@ enum DrawingAreaType {
> 
> } // namespace WebKit
> 
>-#endif // DrawingAreaType_h
>diff --git a/Source/WebKit/Shared/EditingRange.h b/Source/WebKit/Shared/EditingRange.h
>index 485415c6c2f..ebe40323006 100644
>--- a/Source/WebKit/Shared/EditingRange.h
>+++ b/Source/WebKit/Shared/EditingRange.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef EditingRange_h
>-#define EditingRange_h
>+#pragma once
> 
> #include "ArgumentCoders.h"
> 
>@@ -81,4 +80,3 @@ namespace IPC {
> template<> struct ArgumentCoder<WebKit::EditingRange> : SimpleArgumentCoder<WebKit::EditingRange> { };
> }
> 
>-#endif // EditingRange_h
>diff --git a/Source/WebKit/Shared/EntryPointUtilities/mac/XPCService/XPCServiceEntryPoint.h b/Source/WebKit/Shared/EntryPointUtilities/mac/XPCService/XPCServiceEntryPoint.h
>index 75828fde668..8268a3cd362 100644
>--- a/Source/WebKit/Shared/EntryPointUtilities/mac/XPCService/XPCServiceEntryPoint.h
>+++ b/Source/WebKit/Shared/EntryPointUtilities/mac/XPCService/XPCServiceEntryPoint.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef XPCServiceEntryPoint_h
>-#define XPCServiceEntryPoint_h
>+#pragma once
> 
> #import "ChildProcess.h"
> #import "WebKit2Initialize.h"
>@@ -119,4 +118,3 @@ void XPCServiceExit(OSObjectPtr<xpc_object_t>&& priorityBoostMessage);
> 
> } // namespace WebKit
> 
>-#endif // XPCServiceEntryPoint_h
>diff --git a/Source/WebKit/Shared/FontInfo.h b/Source/WebKit/Shared/FontInfo.h
>index 3a697671bdc..e178c352715 100644
>--- a/Source/WebKit/Shared/FontInfo.h
>+++ b/Source/WebKit/Shared/FontInfo.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef FontInfo_h
>-#define FontInfo_h
>+#pragma once
> 
> #if PLATFORM(COCOA)
> #include <wtf/RetainPtr.h>
>@@ -48,4 +47,3 @@ struct FontInfo {
>     
> } // namespace WebKit
> 
>-#endif // FontInfo_h
>diff --git a/Source/WebKit/Shared/FontSmoothingLevel.h b/Source/WebKit/Shared/FontSmoothingLevel.h
>index aebdddac0f3..276591879e7 100644
>--- a/Source/WebKit/Shared/FontSmoothingLevel.h
>+++ b/Source/WebKit/Shared/FontSmoothingLevel.h
>@@ -23,8 +23,7 @@
>  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
>  */
> 
>-#ifndef FontSmoothingLevel_h
>-#define FontSmoothingLevel_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -37,4 +36,3 @@ enum FontSmoothingLevel {
> 
> } // namespace WebKit
> 
>-#endif // FontSmoothingLevel_h
>diff --git a/Source/WebKit/Shared/HTTPCookieAcceptPolicy.h b/Source/WebKit/Shared/HTTPCookieAcceptPolicy.h
>index 4fe81b3c39b..39f5bf07814 100644
>--- a/Source/WebKit/Shared/HTTPCookieAcceptPolicy.h
>+++ b/Source/WebKit/Shared/HTTPCookieAcceptPolicy.h
>@@ -23,8 +23,7 @@
>  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef HTTPCookieAcceptPolicy_h
>-#define HTTPCookieAcceptPolicy_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -38,4 +37,3 @@ typedef unsigned HTTPCookieAcceptPolicy;
> 
> } // namespace WebKit
> 
>-#endif // HTTPCookieAcceptPolicy_h
>diff --git a/Source/WebKit/Shared/HangDetectionDisabler.h b/Source/WebKit/Shared/HangDetectionDisabler.h
>index ae8b701c673..c4ad1074c0a 100644
>--- a/Source/WebKit/Shared/HangDetectionDisabler.h
>+++ b/Source/WebKit/Shared/HangDetectionDisabler.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef HangDetectionDisabler_h
>-#define HangDetectionDisabler_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -51,4 +50,3 @@ inline HangDetectionDisabler::~HangDetectionDisabler()
> 
> }
> 
>-#endif // HangDetectionDisabler_h
>diff --git a/Source/WebKit/Shared/ImageOptions.h b/Source/WebKit/Shared/ImageOptions.h
>index 9182196ecdb..edb9fd41b54 100644
>--- a/Source/WebKit/Shared/ImageOptions.h
>+++ b/Source/WebKit/Shared/ImageOptions.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ImageOptions_h
>-#define ImageOptions_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -57,4 +56,3 @@ inline ImageOptions snapshotOptionsToImageOptions(SnapshotOptions snapshotOption
> 
> } // namespace WebKit
> 
>-#endif // ImageOptions_h
>diff --git a/Source/WebKit/Shared/LoadParameters.h b/Source/WebKit/Shared/LoadParameters.h
>index 8402ddc8500..52cd0ff4c37 100644
>--- a/Source/WebKit/Shared/LoadParameters.h
>+++ b/Source/WebKit/Shared/LoadParameters.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef LoadParameters_h
>-#define LoadParameters_h
>+#pragma once
> 
> #include "DataReference.h"
> #include "SandboxExtension.h"
>@@ -72,4 +71,3 @@ struct LoadParameters {
> 
> } // namespace WebKit
> 
>-#endif // LoadParameters_h
>diff --git a/Source/WebKit/Shared/NativeWebGestureEvent.h b/Source/WebKit/Shared/NativeWebGestureEvent.h
>index b98b758370d..7e3b25013f3 100644
>--- a/Source/WebKit/Shared/NativeWebGestureEvent.h
>+++ b/Source/WebKit/Shared/NativeWebGestureEvent.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NativeWebGestureEvent_h
>-#define NativeWebGestureEvent_h
>+#pragma once
> 
> #if ENABLE(MAC_GESTURE_EVENTS)
> 
>@@ -49,4 +48,3 @@ private:
> 
> #endif // ENABLE(MAC_GESTURE_EVENTS)
> 
>-#endif // NativeWebGestureEvent_h
>diff --git a/Source/WebKit/Shared/NativeWebKeyboardEvent.h b/Source/WebKit/Shared/NativeWebKeyboardEvent.h
>index 64a8f314543..dc60d5e1ebb 100644
>--- a/Source/WebKit/Shared/NativeWebKeyboardEvent.h
>+++ b/Source/WebKit/Shared/NativeWebKeyboardEvent.h
>@@ -26,8 +26,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NativeWebKeyboardEvent_h
>-#define NativeWebKeyboardEvent_h
>+#pragma once
> 
> #include "WebEvent.h"
> 
>@@ -107,4 +106,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // NativeWebKeyboardEvent_h
>diff --git a/Source/WebKit/Shared/NativeWebMouseEvent.h b/Source/WebKit/Shared/NativeWebMouseEvent.h
>index 70e5805b4a9..be6b3b9634d 100644
>--- a/Source/WebKit/Shared/NativeWebMouseEvent.h
>+++ b/Source/WebKit/Shared/NativeWebMouseEvent.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NativeWebMouseEvent_h
>-#define NativeWebMouseEvent_h
>+#pragma once
> 
> #include "WebEvent.h"
> 
>@@ -95,4 +94,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // NativeWebMouseEvent_h
>diff --git a/Source/WebKit/Shared/NativeWebTouchEvent.h b/Source/WebKit/Shared/NativeWebTouchEvent.h
>index 4d93c694459..602d6be3561 100644
>--- a/Source/WebKit/Shared/NativeWebTouchEvent.h
>+++ b/Source/WebKit/Shared/NativeWebTouchEvent.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NativeWebTouchEvent_h
>-#define NativeWebTouchEvent_h
>+#pragma once
> 
> #if ENABLE(TOUCH_EVENTS)
> 
>@@ -71,4 +70,3 @@ private:
> 
> #endif // ENABLE(TOUCH_EVENTS)
> 
>-#endif // NativeWebTouchEvent_h
>diff --git a/Source/WebKit/Shared/NativeWebWheelEvent.h b/Source/WebKit/Shared/NativeWebWheelEvent.h
>index 8bdf5e7008e..25d48e01aea 100644
>--- a/Source/WebKit/Shared/NativeWebWheelEvent.h
>+++ b/Source/WebKit/Shared/NativeWebWheelEvent.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NativeWebWheelEvent_h
>-#define NativeWebWheelEvent_h
>+#pragma once
> 
> #include "WebEvent.h"
> 
>@@ -84,4 +83,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // NativeWebWheelEvent_h
>diff --git a/Source/WebKit/Shared/Plugins/NPObjectMessageReceiver.h b/Source/WebKit/Shared/Plugins/NPObjectMessageReceiver.h
>index 2759893faf9..43360cf8d36 100644
>--- a/Source/WebKit/Shared/Plugins/NPObjectMessageReceiver.h
>+++ b/Source/WebKit/Shared/Plugins/NPObjectMessageReceiver.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NPObjectMessageReceiver_h
>-#define NPObjectMessageReceiver_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -75,4 +74,3 @@ private:
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
> 
>-#endif // NPObjectMessageReceiver_h
>diff --git a/Source/WebKit/Shared/Plugins/NPObjectProxy.h b/Source/WebKit/Shared/Plugins/NPObjectProxy.h
>index 05f49c3cd26..da43e0f0cbb 100644
>--- a/Source/WebKit/Shared/Plugins/NPObjectProxy.h
>+++ b/Source/WebKit/Shared/Plugins/NPObjectProxy.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NPObjectProxy_h
>-#define NPObjectProxy_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -93,4 +92,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // NPObjectProxy_h
>diff --git a/Source/WebKit/Shared/Plugins/NPRemoteObjectMap.h b/Source/WebKit/Shared/Plugins/NPRemoteObjectMap.h
>index ed105a73cd3..785298a0a16 100644
>--- a/Source/WebKit/Shared/Plugins/NPRemoteObjectMap.h
>+++ b/Source/WebKit/Shared/Plugins/NPRemoteObjectMap.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NPRemoteObjectMap_h
>-#define NPRemoteObjectMap_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -79,4 +78,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // NPRemoteObjectMap_h
>diff --git a/Source/WebKit/Shared/Plugins/Netscape/NetscapePluginModule.h b/Source/WebKit/Shared/Plugins/Netscape/NetscapePluginModule.h
>index b82ada11378..0036c60e51c 100644
>--- a/Source/WebKit/Shared/Plugins/Netscape/NetscapePluginModule.h
>+++ b/Source/WebKit/Shared/Plugins/Netscape/NetscapePluginModule.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetscapePluginModule_h
>-#define NetscapePluginModule_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -105,4 +104,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // NetscapePluginModule_h
>diff --git a/Source/WebKit/Shared/Plugins/Netscape/PluginInformation.h b/Source/WebKit/Shared/Plugins/Netscape/PluginInformation.h
>index 969e85a0a4d..89ba7d0fa54 100644
>--- a/Source/WebKit/Shared/Plugins/Netscape/PluginInformation.h
>+++ b/Source/WebKit/Shared/Plugins/Netscape/PluginInformation.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginInformation_h
>-#define PluginInformation_h
>+#pragma once
> 
> #include "APIDictionary.h"
> #include <wtf/Forward.h>
>@@ -60,4 +59,3 @@ void getPlatformPluginModuleInformation(const PluginModuleInfo&, API::Dictionary
> 
> } // namespace WebKit
> 
>-#endif // PluginInformation_h
>diff --git a/Source/WebKit/Shared/Plugins/PluginProcessAttributes.h b/Source/WebKit/Shared/Plugins/PluginProcessAttributes.h
>index b4e7808abbb..d75f3546c9a 100644
>--- a/Source/WebKit/Shared/Plugins/PluginProcessAttributes.h
>+++ b/Source/WebKit/Shared/Plugins/PluginProcessAttributes.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginProcessAttributes_h
>-#define PluginProcessAttributes_h
>+#pragma once
> 
> #include "PluginModuleInfo.h"
> 
>@@ -48,4 +47,3 @@ struct PluginProcessAttributes {
> 
> } // namespace WebKit
> 
>-#endif // PluginProcessAttributes_h
>diff --git a/Source/WebKit/Shared/Plugins/PluginQuirks.h b/Source/WebKit/Shared/Plugins/PluginQuirks.h
>index 304ccf9e1a3..2a418dd309b 100644
>--- a/Source/WebKit/Shared/Plugins/PluginQuirks.h
>+++ b/Source/WebKit/Shared/Plugins/PluginQuirks.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginQuirks_h
>-#define PluginQuirks_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -128,4 +127,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // PluginQuirkSet_h
>diff --git a/Source/WebKit/Shared/Plugins/mac/PluginComplexTextInputState.h b/Source/WebKit/Shared/Plugins/mac/PluginComplexTextInputState.h
>index c2edd2b0673..6a3adcdd5be 100644
>--- a/Source/WebKit/Shared/Plugins/mac/PluginComplexTextInputState.h
>+++ b/Source/WebKit/Shared/Plugins/mac/PluginComplexTextInputState.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginComplexTextInputState_h
>-#define PluginComplexTextInputState_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -55,4 +54,3 @@ static inline bool isValidPluginComplexTextInputState(uint64_t value)
> 
> } // namespace WebKit
> 
>-#endif // PluginComplexTextInputState_h
>diff --git a/Source/WebKit/Shared/Plugins/mac/PluginSandboxProfile.h b/Source/WebKit/Shared/Plugins/mac/PluginSandboxProfile.h
>index 0a246b62497..26b9e259d8e 100644
>--- a/Source/WebKit/Shared/Plugins/mac/PluginSandboxProfile.h
>+++ b/Source/WebKit/Shared/Plugins/mac/PluginSandboxProfile.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginSandboxProfile_h
>-#define PluginSandboxProfile_h
>+#pragma once
> 
> #include <wtf/Forward.h>
> 
>@@ -35,4 +34,3 @@ bool pluginHasSandboxProfile(const String& bundleIdentifier);
> 
> } // namespace WebKit
> 
>-#endif // PluginSandboxProfile_h
>diff --git a/Source/WebKit/Shared/Plugins/unix/PluginSearchPath.h b/Source/WebKit/Shared/Plugins/unix/PluginSearchPath.h
>index 25a13ec8e72..aca67ed26d1 100644
>--- a/Source/WebKit/Shared/Plugins/unix/PluginSearchPath.h
>+++ b/Source/WebKit/Shared/Plugins/unix/PluginSearchPath.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginSearchPath_h
>-#define PluginSearchPath_h
>+#pragma once
> 
> #include <wtf/Forward.h>
> #include <wtf/Vector.h>
>@@ -35,4 +34,3 @@ Vector<String> pluginsDirectories();
> 
> } // namespace WebKit
> 
>-#endif // PluginSandboxProfile_h
>diff --git a/Source/WebKit/Shared/ResourceCachesToClear.h b/Source/WebKit/Shared/ResourceCachesToClear.h
>index df9367c43ac..776e96dcada 100644
>--- a/Source/WebKit/Shared/ResourceCachesToClear.h
>+++ b/Source/WebKit/Shared/ResourceCachesToClear.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ResourceCachesToClear_h
>-#define ResourceCachesToClear_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -35,4 +34,3 @@ enum ResourceCachesToClear {
> 
> } // namespace WebKit
> 
>-#endif // ResourceCachesToClear_h
>diff --git a/Source/WebKit/Shared/SameDocumentNavigationType.h b/Source/WebKit/Shared/SameDocumentNavigationType.h
>index 41a6fc26309..0eaa23d5540 100644
>--- a/Source/WebKit/Shared/SameDocumentNavigationType.h
>+++ b/Source/WebKit/Shared/SameDocumentNavigationType.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef SameDocumentNavigationType_h
>-#define SameDocumentNavigationType_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -37,4 +36,3 @@ enum SameDocumentNavigationType {
> 
> } // namespace WebKit
> 
>-#endif // SameDocumentNavigationType_h
>diff --git a/Source/WebKit/Shared/SandboxInitializationParameters.h b/Source/WebKit/Shared/SandboxInitializationParameters.h
>index a619b700423..57c61499a64 100644
>--- a/Source/WebKit/Shared/SandboxInitializationParameters.h
>+++ b/Source/WebKit/Shared/SandboxInitializationParameters.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef SandboxInitializationParameters_h
>-#define SandboxInitializationParameters_h
>+#pragma once
> 
> #include <wtf/Vector.h>
> #include <wtf/text/WTFString.h>
>@@ -114,4 +113,3 @@ SandboxInitializationParameters::~SandboxInitializationParameters()
> 
> } // namespace WebKit
> 
>-#endif // SandboxInitializationParameters_h
>diff --git a/Source/WebKit/Shared/SessionTracker.h b/Source/WebKit/Shared/SessionTracker.h
>index 3fe5bd470c1..3ffdfb2e997 100644
>--- a/Source/WebKit/Shared/SessionTracker.h
>+++ b/Source/WebKit/Shared/SessionTracker.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef SessionTracker_h
>-#define SessionTracker_h
>+#pragma once
> 
> namespace WebCore {
> class NetworkStorageSession;
>@@ -52,4 +51,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // SessionTracker_h
>diff --git a/Source/WebKit/Shared/ShareableBitmap.h b/Source/WebKit/Shared/ShareableBitmap.h
>index 6fd63045098..29c845a8595 100644
>--- a/Source/WebKit/Shared/ShareableBitmap.h
>+++ b/Source/WebKit/Shared/ShareableBitmap.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ShareableBitmap_h
>-#define ShareableBitmap_h
>+#pragma once
> 
> #include "SharedMemory.h"
> #include <WebCore/IntRect.h>
>@@ -158,4 +157,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // ShareableBitmap_h
>diff --git a/Source/WebKit/Shared/ShareableResource.h b/Source/WebKit/Shared/ShareableResource.h
>index ca1d3f4e751..a4f8c2d1ab1 100644
>--- a/Source/WebKit/Shared/ShareableResource.h
>+++ b/Source/WebKit/Shared/ShareableResource.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ShareableResource_h
>-#define ShareableResource_h
>+#pragma once
> 
> #if ENABLE(SHAREABLE_RESOURCE)
> 
>@@ -90,4 +89,3 @@ private:
> 
> #endif // ENABLE(SHAREABLE_RESOURCE)
> 
>-#endif // ShareableResource_h
>diff --git a/Source/WebKit/Shared/StatisticsData.h b/Source/WebKit/Shared/StatisticsData.h
>index f8e24a82a09..ec5b5719269 100644
>--- a/Source/WebKit/Shared/StatisticsData.h
>+++ b/Source/WebKit/Shared/StatisticsData.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef StatisticsData_h
>-#define StatisticsData_h
>+#pragma once
> 
> #include "Decoder.h"
> #include "Encoder.h"
>@@ -49,4 +48,3 @@ struct StatisticsData {
> 
> } // namespace WebKit
> 
>-#endif // StatisticsData_h
>diff --git a/Source/WebKit/Shared/UpdateInfo.h b/Source/WebKit/Shared/UpdateInfo.h
>index b1d4af9f7f1..30cf56018a9 100644
>--- a/Source/WebKit/Shared/UpdateInfo.h
>+++ b/Source/WebKit/Shared/UpdateInfo.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef UpdateInfo_h
>-#define UpdateInfo_h
>+#pragma once
> 
> #include "ShareableBitmap.h"
> #include <WebCore/IntRect.h>
>@@ -73,4 +72,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // UpdateInfo_h
>diff --git a/Source/WebKit/Shared/UserData.h b/Source/WebKit/Shared/UserData.h
>index 4ee6092ad30..c81dff863fa 100644
>--- a/Source/WebKit/Shared/UserData.h
>+++ b/Source/WebKit/Shared/UserData.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef UserData_h
>-#define UserData_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/RefPtr.h>
>@@ -65,4 +64,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // UserData_h
>diff --git a/Source/WebKit/Shared/WebCertificateInfo.h b/Source/WebKit/Shared/WebCertificateInfo.h
>index 147b9a3f97a..0b76e0022a6 100644
>--- a/Source/WebKit/Shared/WebCertificateInfo.h
>+++ b/Source/WebKit/Shared/WebCertificateInfo.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebCertificateInfo_h
>-#define WebCertificateInfo_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/CertificateInfo.h>
>@@ -52,4 +51,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebCertificateInfo_h
>diff --git a/Source/WebKit/Shared/WebConnection.h b/Source/WebKit/Shared/WebConnection.h
>index fb260b4cd79..a0691e04887 100644
>--- a/Source/WebKit/Shared/WebConnection.h
>+++ b/Source/WebKit/Shared/WebConnection.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebConnection_h
>-#define WebConnection_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "MessageReceiver.h"
>@@ -64,4 +63,3 @@ protected:
> 
> } // namespace WebKit
> 
>-#endif // WebConnection_h
>diff --git a/Source/WebKit/Shared/WebConnectionClient.h b/Source/WebKit/Shared/WebConnectionClient.h
>index a3d5cbb6ae6..ccaaeb12109 100644
>--- a/Source/WebKit/Shared/WebConnectionClient.h
>+++ b/Source/WebKit/Shared/WebConnectionClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebConnectionClient_h
>-#define WebConnectionClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "WKConnectionRef.h"
>@@ -50,4 +49,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebConnectionClient_h
>diff --git a/Source/WebKit/Shared/WebContextMenuItem.h b/Source/WebKit/Shared/WebContextMenuItem.h
>index 97632f966cc..1f64d4c5557 100644
>--- a/Source/WebKit/Shared/WebContextMenuItem.h
>+++ b/Source/WebKit/Shared/WebContextMenuItem.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebContextMenuItem_h
>-#define WebContextMenuItem_h
>+#pragma once
> 
> #if ENABLE(CONTEXT_MENUS)
> 
>@@ -67,4 +66,3 @@ private:
> } // namespace WebKit
> 
> #endif // ENABLE(CONTEXT_MENUS)
>-#endif // WebContextMenuItem_h
>diff --git a/Source/WebKit/Shared/WebEvent.h b/Source/WebKit/Shared/WebEvent.h
>index d625d2b89a3..8e9ed14deea 100644
>--- a/Source/WebKit/Shared/WebEvent.h
>+++ b/Source/WebKit/Shared/WebEvent.h
>@@ -24,8 +24,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebEvent_h
>-#define WebEvent_h
>+#pragma once
> 
> // FIXME: We should probably move to makeing the WebCore/PlatformFooEvents trivial classes so that
> // we can use them as the event type.
>@@ -494,4 +493,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebEvent_h
>diff --git a/Source/WebKit/Shared/WebEventConversion.h b/Source/WebKit/Shared/WebEventConversion.h
>index 827f4f7b20f..df7cd682deb 100644
>--- a/Source/WebKit/Shared/WebEventConversion.h
>+++ b/Source/WebKit/Shared/WebEventConversion.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebEventConversion_h
>-#define WebEventConversion_h
>+#pragma once
> 
> #include <WebCore/PlatformKeyboardEvent.h>
> #include <WebCore/PlatformMouseEvent.h>
>@@ -73,4 +72,3 @@ WebCore::PlatformGestureEvent platform(const WebGestureEvent&);
> 
> } // namespace WebKit
> 
>-#endif // WebEventConversion_h
>diff --git a/Source/WebKit/Shared/WebGeolocationPosition.h b/Source/WebKit/Shared/WebGeolocationPosition.h
>index 418ac363147..6f308325b68 100644
>--- a/Source/WebKit/Shared/WebGeolocationPosition.h
>+++ b/Source/WebKit/Shared/WebGeolocationPosition.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebGeolocationPosition_h
>-#define WebGeolocationPosition_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/GeolocationPosition.h>
>@@ -65,4 +64,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebGeolocationPosition_h
>diff --git a/Source/WebKit/Shared/WebHitTestResultData.h b/Source/WebKit/Shared/WebHitTestResultData.h
>index d3cfeec996a..6428c92c519 100644
>--- a/Source/WebKit/Shared/WebHitTestResultData.h
>+++ b/Source/WebKit/Shared/WebHitTestResultData.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebHitTestResultData_h
>-#define WebHitTestResultData_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "SharedMemory.h"
>@@ -89,4 +88,3 @@ struct WebHitTestResultData {
> 
> } // namespace WebKit
> 
>-#endif // WebHitTestResultData_h
>diff --git a/Source/WebKit/Shared/WebMediaSessionMetadata.h b/Source/WebKit/Shared/WebMediaSessionMetadata.h
>index 7c30dd683b1..e77c773f2ea 100644
>--- a/Source/WebKit/Shared/WebMediaSessionMetadata.h
>+++ b/Source/WebKit/Shared/WebMediaSessionMetadata.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebMediaSessionMetadata_h
>-#define WebMediaSessionMetadata_h
>+#pragma once
> 
> #if ENABLE(MEDIA_SESSION)
> 
>@@ -54,4 +53,3 @@ private:
> 
> #endif // ENABLE(MEDIA_SESSION)
> 
>-#endif // WebMediaSessionMetadata_h
>diff --git a/Source/WebKit/Shared/WebMemorySampler.h b/Source/WebKit/Shared/WebMemorySampler.h
>index 80813fea050..cba2a1f031c 100644
>--- a/Source/WebKit/Shared/WebMemorySampler.h
>+++ b/Source/WebKit/Shared/WebMemorySampler.h
>@@ -46,8 +46,7 @@
>  *          - Resident size memory (RSIZE)
>  */
> 
>-#ifndef WebMemorySampler_h
>-#define WebMemorySampler_h
>+#pragma once
> 
> #if ENABLE(MEMORY_SAMPLER)
> 
>@@ -108,4 +107,3 @@ private:
> 
> #endif
> 
>-#endif
>diff --git a/Source/WebKit/Shared/WebNavigationDataStore.h b/Source/WebKit/Shared/WebNavigationDataStore.h
>index 3b42d0215fe..252fb72358a 100644
>--- a/Source/WebKit/Shared/WebNavigationDataStore.h
>+++ b/Source/WebKit/Shared/WebNavigationDataStore.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebNavigationDataStore_h
>-#define WebNavigationDataStore_h
>+#pragma once
> 
> #include "Decoder.h"
> #include "Encoder.h"
>@@ -66,4 +65,3 @@ struct WebNavigationDataStore {
> 
> } // namespace WebKit
> 
>-#endif // WebNavigationDataStore_h
>diff --git a/Source/WebKit/Shared/WebRenderLayer.h b/Source/WebKit/Shared/WebRenderLayer.h
>index 51414dfb47a..3254594d7f3 100644
>--- a/Source/WebKit/Shared/WebRenderLayer.h
>+++ b/Source/WebKit/Shared/WebRenderLayer.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebRenderLayer_h
>-#define WebRenderLayer_h
>+#pragma once
> 
> #include "WebRenderObject.h"
> 
>@@ -79,4 +78,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebRenderLayer_h
>diff --git a/Source/WebKit/Shared/WebRenderObject.h b/Source/WebKit/Shared/WebRenderObject.h
>index 8522dac8844..fef504378f5 100644
>--- a/Source/WebKit/Shared/WebRenderObject.h
>+++ b/Source/WebKit/Shared/WebRenderObject.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebRenderObject_h
>-#define WebRenderObject_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/IntRect.h>
>@@ -87,4 +86,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebRenderObject_h
>diff --git a/Source/WebKit/Shared/WebSQLiteDatabaseTracker.h b/Source/WebKit/Shared/WebSQLiteDatabaseTracker.h
>index 7c5b75a4164..225bfd372d4 100644
>--- a/Source/WebKit/Shared/WebSQLiteDatabaseTracker.h
>+++ b/Source/WebKit/Shared/WebSQLiteDatabaseTracker.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebSQLiteDatabaseTracker_h
>-#define WebSQLiteDatabaseTracker_h
>+#pragma once
> 
> #include <WebCore/SQLiteDatabaseTrackerClient.h>
> #include <pal/HysteresisActivity.h>
>@@ -57,4 +56,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebSQLiteDatabaseTracker_h
>diff --git a/Source/WebKit/Shared/WebsiteData/WebsiteDataType.h b/Source/WebKit/Shared/WebsiteData/WebsiteDataType.h
>index 9d50361e81a..4f1c6fe2ab6 100644
>--- a/Source/WebKit/Shared/WebsiteData/WebsiteDataType.h
>+++ b/Source/WebKit/Shared/WebsiteData/WebsiteDataType.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebsiteDataType_h
>-#define WebsiteDataType_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -53,4 +52,3 @@ enum class WebsiteDataType {
> 
> };
> 
>-#endif // WebsiteDataType_h
>diff --git a/Source/WebKit/Shared/cf/ArgumentCodersCF.h b/Source/WebKit/Shared/cf/ArgumentCodersCF.h
>index d8befd0a319..843b0226190 100644
>--- a/Source/WebKit/Shared/cf/ArgumentCodersCF.h
>+++ b/Source/WebKit/Shared/cf/ArgumentCodersCF.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ArgumentCodersCF_h
>-#define ArgumentCodersCF_h
>+#pragma once
> 
> #include <Security/SecCertificate.h>
> #include <Security/SecTrust.h>
>@@ -109,4 +108,3 @@ CFTypeRef tokenNullTypeRef();
> 
> } // namespace IPC
> 
>-#endif // ArgumentCodersCF_h
>diff --git a/Source/WebKit/Shared/gtk/ArgumentCodersGtk.h b/Source/WebKit/Shared/gtk/ArgumentCodersGtk.h
>index f1e78502f53..7b82ea402fa 100644
>--- a/Source/WebKit/Shared/gtk/ArgumentCodersGtk.h
>+++ b/Source/WebKit/Shared/gtk/ArgumentCodersGtk.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ArgumentCodersGtk_h
>-#define ArgumentCodersGtk_h
>+#pragma once
> 
> #include "ArgumentCoders.h"
> #include <wtf/glib/GRefPtr.h>
>@@ -51,4 +50,3 @@ template<> struct ArgumentCoder<WebCore::SelectionData> {
> 
> } // namespace IPC
> 
>-#endif // ArgumentCodersGtk_h
>diff --git a/Source/WebKit/Shared/gtk/WebEventFactory.h b/Source/WebKit/Shared/gtk/WebEventFactory.h
>index 8fe7cdce56f..681da0d5318 100644
>--- a/Source/WebKit/Shared/gtk/WebEventFactory.h
>+++ b/Source/WebKit/Shared/gtk/WebEventFactory.h
>@@ -24,8 +24,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebEventFactory_h
>-#define WebEventFactory_h
>+#pragma once
> 
> #include "WebEvent.h"
> #include <WebCore/CompositionResults.h>
>@@ -47,4 +46,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebEventFactory_h
>diff --git a/Source/WebKit/Shared/ios/GestureTypes.h b/Source/WebKit/Shared/ios/GestureTypes.h
>index 68450d0d602..80a82c8c10f 100644
>--- a/Source/WebKit/Shared/ios/GestureTypes.h
>+++ b/Source/WebKit/Shared/ios/GestureTypes.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef GestureTypes_h
>-#define GestureTypes_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -85,4 +84,3 @@ enum class SelectionHandlePosition {
> 
> } // namespace WebKit
> 
>-#endif // GestureTypes_h
>diff --git a/Source/WebKit/Shared/ios/QuickLookDocumentData.h b/Source/WebKit/Shared/ios/QuickLookDocumentData.h
>index 1f255b5f86e..e218c17f471 100644
>--- a/Source/WebKit/Shared/ios/QuickLookDocumentData.h
>+++ b/Source/WebKit/Shared/ios/QuickLookDocumentData.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef QuickLookDocumentData_h
>-#define QuickLookDocumentData_h
>+#pragma once
> 
> #include <wtf/RetainPtr.h>
> #include <wtf/Vector.h>
>@@ -49,4 +48,3 @@ private:
> };
> } // namespace WebKit
> 
>-#endif // QuickLookDocumentData_h
>diff --git a/Source/WebKit/Shared/ios/WebIOSEventFactory.h b/Source/WebKit/Shared/ios/WebIOSEventFactory.h
>index fa45ee63372..4ea97da5c10 100644
>--- a/Source/WebKit/Shared/ios/WebIOSEventFactory.h
>+++ b/Source/WebKit/Shared/ios/WebIOSEventFactory.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebIOSEventFactory_h
>-#define WebIOSEventFactory_h
>+#pragma once
> 
> #if PLATFORM(IOS)
> 
>@@ -39,4 +38,3 @@ public:
> 
> #endif // PLATFORM(IOS)
> 
>-#endif // WebIOSEventFactory_h
>diff --git a/Source/WebKit/Shared/mac/AttributedString.h b/Source/WebKit/Shared/mac/AttributedString.h
>index 37e23f0b031..5cccb1c49cb 100644
>--- a/Source/WebKit/Shared/mac/AttributedString.h
>+++ b/Source/WebKit/Shared/mac/AttributedString.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef AttributedString_h
>-#define AttributedString_h
>+#pragma once
> 
> #include <wtf/RetainPtr.h>
> 
>@@ -46,4 +45,3 @@ struct AttributedString {
> 
> }
> 
>-#endif // AttributedString_h
>diff --git a/Source/WebKit/Shared/mac/ColorSpaceData.h b/Source/WebKit/Shared/mac/ColorSpaceData.h
>index cd2b2f47221..6d753570933 100644
>--- a/Source/WebKit/Shared/mac/ColorSpaceData.h
>+++ b/Source/WebKit/Shared/mac/ColorSpaceData.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ColorSpaceData_h
>-#define ColorSpaceData_h
>+#pragma once
> 
> #include <wtf/RetainPtr.h>
> 
>@@ -44,4 +43,3 @@ struct ColorSpaceData {
> 
> } // namespace WebKit
> 
>-#endif // ColorSpaceData_h
>diff --git a/Source/WebKit/Shared/mac/ObjCObjectGraph.h b/Source/WebKit/Shared/mac/ObjCObjectGraph.h
>index f12f1ca130d..ec8cfcdf6ee 100644
>--- a/Source/WebKit/Shared/mac/ObjCObjectGraph.h
>+++ b/Source/WebKit/Shared/mac/ObjCObjectGraph.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ObjCObjectGraph_h
>-#define ObjCObjectGraph_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/RetainPtr.h>
>@@ -71,4 +70,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // ObjCObjectGraph_h
>diff --git a/Source/WebKit/Shared/mac/PDFKitImports.h b/Source/WebKit/Shared/mac/PDFKitImports.h
>index c5ad29e19dd..38575c36051 100644
>--- a/Source/WebKit/Shared/mac/PDFKitImports.h
>+++ b/Source/WebKit/Shared/mac/PDFKitImports.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PDFKitImports_h
>-#define PDFKitImports_h
>+#pragma once
> 
> #if PLATFORM(MAC)
> 
>@@ -46,4 +45,3 @@ Class pdfSelectionClass();
> 
> #endif // PLATFORM(MAC)
> 
>-#endif // PDFKitImports_h
>diff --git a/Source/WebKit/Shared/mac/PasteboardTypes.h b/Source/WebKit/Shared/mac/PasteboardTypes.h
>index d5c89c522d5..19e0f8c0d95 100644
>--- a/Source/WebKit/Shared/mac/PasteboardTypes.h
>+++ b/Source/WebKit/Shared/mac/PasteboardTypes.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PasteboardTypes_h
>-#define PasteboardTypes_h
>+#pragma once
> 
> #if PLATFORM(MAC)
> 
>@@ -49,4 +48,3 @@ public:
> 
> #endif // PLATFORM(MAC)
> 
>-#endif // PasteboardTypes_h
>diff --git a/Source/WebKit/Shared/mac/SecItemRequestData.h b/Source/WebKit/Shared/mac/SecItemRequestData.h
>index 465a821cbec..28e86c64825 100644
>--- a/Source/WebKit/Shared/mac/SecItemRequestData.h
>+++ b/Source/WebKit/Shared/mac/SecItemRequestData.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef SecItemRequestData_h
>-#define SecItemRequestData_h
>+#pragma once
> 
> #include <wtf/RetainPtr.h>
> 
>@@ -65,4 +64,3 @@ private:
>     
> } // namespace WebKit
> 
>-#endif // SecItemRequestData_h
>diff --git a/Source/WebKit/Shared/mac/SecItemResponseData.h b/Source/WebKit/Shared/mac/SecItemResponseData.h
>index dbdf8d00acf..8746128be5e 100644
>--- a/Source/WebKit/Shared/mac/SecItemResponseData.h
>+++ b/Source/WebKit/Shared/mac/SecItemResponseData.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef SecItemResponseData_h
>-#define SecItemResponseData_h
>+#pragma once
> 
> #include <wtf/RetainPtr.h>
> 
>@@ -53,4 +52,3 @@ private:
>     
> } // namespace WebKit
> 
>-#endif // SecItemResponseData_h
>diff --git a/Source/WebKit/Shared/mac/WeakObjCPtr.h b/Source/WebKit/Shared/mac/WeakObjCPtr.h
>index 7cf000cfb06..4c3f29b56d0 100644
>--- a/Source/WebKit/Shared/mac/WeakObjCPtr.h
>+++ b/Source/WebKit/Shared/mac/WeakObjCPtr.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WeakObjCPtr_h
>-#define WeakObjCPtr_h
>+#pragma once
> 
> #include <objc/runtime.h>
> #include <type_traits>
>@@ -103,4 +102,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WeakObjCPtr_h
>diff --git a/Source/WebKit/Shared/mac/WebEventFactory.h b/Source/WebKit/Shared/mac/WebEventFactory.h
>index be872ceb68a..624012d289e 100644
>--- a/Source/WebKit/Shared/mac/WebEventFactory.h
>+++ b/Source/WebKit/Shared/mac/WebEventFactory.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebEventFactory_h
>-#define WebEventFactory_h
>+#pragma once
> 
> #import "WebEvent.h"
> 
>@@ -51,4 +50,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebEventFactory_h
>diff --git a/Source/WebKit/Shared/mac/WebGestureEvent.h b/Source/WebKit/Shared/mac/WebGestureEvent.h
>index b6f9c68db03..03672f59879 100644
>--- a/Source/WebKit/Shared/mac/WebGestureEvent.h
>+++ b/Source/WebKit/Shared/mac/WebGestureEvent.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebGestureEvent_h
>-#define WebGestureEvent_h
>+#pragma once
> 
> #if ENABLE(MAC_GESTURE_EVENTS)
> 
>@@ -74,4 +73,3 @@ private:
> 
> #endif // ENABLE(MAC_GESTURE_EVENTS)
> 
>-#endif // WebGestureEvent_h
>diff --git a/Source/WebKit/Shared/soup/SoupCookiePersistentStorageType.h b/Source/WebKit/Shared/soup/SoupCookiePersistentStorageType.h
>index 9fc1c3cd319..1b2eab6cc20 100644
>--- a/Source/WebKit/Shared/soup/SoupCookiePersistentStorageType.h
>+++ b/Source/WebKit/Shared/soup/SoupCookiePersistentStorageType.h
>@@ -23,8 +23,7 @@
>  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef SoupCookiePersistentStorageType_h
>-#define SoupCookiePersistentStorageType_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -35,4 +34,3 @@ enum SoupCookiePersistentStorageType {
> 
> } // namespace WebKit
> 
>-#endif // SoupCookiePersistentStorageType_h
>diff --git a/Source/WebKit/Shared/unix/ChildProcessMain.h b/Source/WebKit/Shared/unix/ChildProcessMain.h
>index 7b9029420d9..d56659441d5 100644
>--- a/Source/WebKit/Shared/unix/ChildProcessMain.h
>+++ b/Source/WebKit/Shared/unix/ChildProcessMain.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ChildProcessMain_h
>-#define ChildProcessMain_h
>+#pragma once
> 
> #include "ChildProcess.h"
> #include "WebKit2Initialize.h"
>@@ -66,4 +65,3 @@ int ChildProcessMain(int argc, char** argv)
> 
> } // namespace WebKit
> 
>-#endif // ChildProcessMain_h
>diff --git a/Source/WebKit/UIProcess/API/APIAttachment.h b/Source/WebKit/UIProcess/API/APIAttachment.h
>index 261d1439521..60d6e68da9a 100644
>--- a/Source/WebKit/UIProcess/API/APIAttachment.h
>+++ b/Source/WebKit/UIProcess/API/APIAttachment.h
>@@ -26,8 +26,8 @@
> #pragma once
> 
> #include "APIObject.h"
>+#include "WebPageProxy.h"
> #include <WebKit/WKBase.h>
>-#include <WebKit/WebPageProxy.h>
> #include <wtf/RefPtr.h>
> #include <wtf/WeakPtr.h>
> #include <wtf/text/WTFString.h>
>diff --git a/Source/WebKit/UIProcess/API/APIAutomationClient.h b/Source/WebKit/UIProcess/API/APIAutomationClient.h
>index 299581095dd..3fdd957e0e2 100644
>--- a/Source/WebKit/UIProcess/API/APIAutomationClient.h
>+++ b/Source/WebKit/UIProcess/API/APIAutomationClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIAutomationClient_h
>-#define APIAutomationClient_h
>+#pragma once
> 
> #include <wtf/Forward.h>
> 
>@@ -44,4 +43,3 @@ public:
> 
> } // namespace API
> 
>-#endif // APIAutomationClient_h
>diff --git a/Source/WebKit/UIProcess/API/APIAutomationSessionClient.h b/Source/WebKit/UIProcess/API/APIAutomationSessionClient.h
>index 8076e4444d7..85ebcc4b662 100644
>--- a/Source/WebKit/UIProcess/API/APIAutomationSessionClient.h
>+++ b/Source/WebKit/UIProcess/API/APIAutomationSessionClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIAutomationSessionClient_h
>-#define APIAutomationSessionClient_h
>+#pragma once
> 
> #include <wtf/CompletionHandler.h>
> #include <wtf/text/WTFString.h>
>@@ -67,4 +66,3 @@ public:
> 
> } // namespace API
> 
>-#endif // APIAutomationSessionClient_h
>diff --git a/Source/WebKit/UIProcess/API/APIDiagnosticLoggingClient.h b/Source/WebKit/UIProcess/API/APIDiagnosticLoggingClient.h
>index 40ad0d408b8..ebdebf3b909 100644
>--- a/Source/WebKit/UIProcess/API/APIDiagnosticLoggingClient.h
>+++ b/Source/WebKit/UIProcess/API/APIDiagnosticLoggingClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIDiagnosticLoggingClient_h
>-#define APIDiagnosticLoggingClient_h
>+#pragma once
> 
> #include <WebCore/DiagnosticLoggingResultType.h>
> #include <wtf/text/WTFString.h>
>@@ -47,5 +46,4 @@ public:
> 
> } // namespace API
> 
>-#endif // APIDiagnosticLoggingClient_h
> 
>diff --git a/Source/WebKit/UIProcess/API/APIExperimentalFeature.h b/Source/WebKit/UIProcess/API/APIExperimentalFeature.h
>index 68a506c7c1b..297e141d6b7 100644
>--- a/Source/WebKit/UIProcess/API/APIExperimentalFeature.h
>+++ b/Source/WebKit/UIProcess/API/APIExperimentalFeature.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIExperimentalFeature_h
>-#define APIExperimentalFeature_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/text/WTFString.h>
>@@ -52,4 +51,3 @@ private:
> 
> }
> 
>-#endif // APIExperimentalFeature_h
>diff --git a/Source/WebKit/UIProcess/API/APIFindClient.h b/Source/WebKit/UIProcess/API/APIFindClient.h
>index f3123af1951..2fddacde7f0 100644
>--- a/Source/WebKit/UIProcess/API/APIFindClient.h
>+++ b/Source/WebKit/UIProcess/API/APIFindClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIFindClient_h
>-#define APIFindClient_h
>+#pragma once
> 
> #include <wtf/text/WTFString.h>
> 
>@@ -49,4 +48,3 @@ public:
> 
> } // namespace API
> 
>-#endif // APIFindClient_h
>diff --git a/Source/WebKit/UIProcess/API/APIFindMatchesClient.h b/Source/WebKit/UIProcess/API/APIFindMatchesClient.h
>index c6f457342d1..c0985a21b57 100644
>--- a/Source/WebKit/UIProcess/API/APIFindMatchesClient.h
>+++ b/Source/WebKit/UIProcess/API/APIFindMatchesClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIFindMatchesClient_h
>-#define APIFindMatchesClient_h
>+#pragma once
> 
> #include <WebCore/IntRect.h>
> #include <wtf/Vector.h>
>@@ -47,4 +46,3 @@ public:
> 
> } // namespace API
> 
>-#endif // APIFindMatchesClient_h
>diff --git a/Source/WebKit/UIProcess/API/APIHistoryClient.h b/Source/WebKit/UIProcess/API/APIHistoryClient.h
>index 77fca265629..eed9621c2d6 100644
>--- a/Source/WebKit/UIProcess/API/APIHistoryClient.h
>+++ b/Source/WebKit/UIProcess/API/APIHistoryClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIHistoryClient_h
>-#define APIHistoryClient_h
>+#pragma once
> 
> #include <wtf/Forward.h>
> 
>@@ -47,4 +46,3 @@ public:
> 
> } // namespace API
> 
>-#endif // APIHistoryClient_h
>diff --git a/Source/WebKit/UIProcess/API/APILegacyContextHistoryClient.h b/Source/WebKit/UIProcess/API/APILegacyContextHistoryClient.h
>index cbb9e0a9714..b15ce9b05af 100644
>--- a/Source/WebKit/UIProcess/API/APILegacyContextHistoryClient.h
>+++ b/Source/WebKit/UIProcess/API/APILegacyContextHistoryClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APILegacyContextHistoryClient_h
>-#define APILegacyContextHistoryClient_h
>+#pragma once
> 
> #include <wtf/Forward.h>
> 
>@@ -51,4 +50,3 @@ public:
> 
> } // namespace API
> 
>-#endif // APILegacyContextHistoryClient_h
>diff --git a/Source/WebKit/UIProcess/API/APILoaderClient.h b/Source/WebKit/UIProcess/API/APILoaderClient.h
>index 38410da025d..d9e36027778 100644
>--- a/Source/WebKit/UIProcess/API/APILoaderClient.h
>+++ b/Source/WebKit/UIProcess/API/APILoaderClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APILoaderClient_h
>-#define APILoaderClient_h
>+#pragma once
> 
> #include "APIData.h"
> #include "PluginModuleInfo.h"
>@@ -121,4 +120,3 @@ public:
> 
> } // namespace API
> 
>-#endif // APILoaderClient_h
>diff --git a/Source/WebKit/UIProcess/API/APINavigationData.h b/Source/WebKit/UIProcess/API/APINavigationData.h
>index f614cc4fc5a..45f239c7f6a 100644
>--- a/Source/WebKit/UIProcess/API/APINavigationData.h
>+++ b/Source/WebKit/UIProcess/API/APINavigationData.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APINavigationData_h
>-#define APINavigationData_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "WebNavigationDataStore.h"
>@@ -53,4 +52,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APINavigationData_h
>diff --git a/Source/WebKit/UIProcess/API/APINavigationResponse.h b/Source/WebKit/UIProcess/API/APINavigationResponse.h
>index 75c456f534f..f6995f584a1 100644
>--- a/Source/WebKit/UIProcess/API/APINavigationResponse.h
>+++ b/Source/WebKit/UIProcess/API/APINavigationResponse.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APINavigationResponse_h
>-#define APINavigationResponse_h
>+#pragma once
> 
> #include "APIFrameInfo.h"
> #include "APIObject.h"
>@@ -67,4 +66,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APINavigationResponse_h
>diff --git a/Source/WebKit/UIProcess/API/APIPageConfiguration.h b/Source/WebKit/UIProcess/API/APIPageConfiguration.h
>index d43b91d682c..d6849dac904 100644
>--- a/Source/WebKit/UIProcess/API/APIPageConfiguration.h
>+++ b/Source/WebKit/UIProcess/API/APIPageConfiguration.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIPageConfiguration_h
>-#define APIPageConfiguration_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "WebPreferencesStore.h"
>@@ -146,4 +145,3 @@ private:
> } // namespace API
> 
> 
>-#endif // APIPageConfiguration_h
>diff --git a/Source/WebKit/UIProcess/API/APISessionState.h b/Source/WebKit/UIProcess/API/APISessionState.h
>index e4d32f7fccf..b613730a774 100644
>--- a/Source/WebKit/UIProcess/API/APISessionState.h
>+++ b/Source/WebKit/UIProcess/API/APISessionState.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APISessionState_h
>-#define APISessionState_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "SessionState.h"
>@@ -46,4 +45,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APISessionState_h
>diff --git a/Source/WebKit/UIProcess/API/APIUserContentWorld.h b/Source/WebKit/UIProcess/API/APIUserContentWorld.h
>index 840fe1c303e..f6051dfe2c4 100644
>--- a/Source/WebKit/UIProcess/API/APIUserContentWorld.h
>+++ b/Source/WebKit/UIProcess/API/APIUserContentWorld.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIUserContentWorld_h
>-#define APIUserContentWorld_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/text/WTFString.h>
>@@ -53,4 +52,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIUserContentWorld_h
>diff --git a/Source/WebKit/UIProcess/API/APIUserScript.h b/Source/WebKit/UIProcess/API/APIUserScript.h
>index 17a40909897..d9e3649d180 100644
>--- a/Source/WebKit/UIProcess/API/APIUserScript.h
>+++ b/Source/WebKit/UIProcess/API/APIUserScript.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIUserScript_h
>-#define APIUserScript_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "APIUserContentWorld.h"
>@@ -56,4 +55,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIUserScript_h
>diff --git a/Source/WebKit/UIProcess/API/APIUserStyleSheet.h b/Source/WebKit/UIProcess/API/APIUserStyleSheet.h
>index d856f7a52f9..6bfede18088 100644
>--- a/Source/WebKit/UIProcess/API/APIUserStyleSheet.h
>+++ b/Source/WebKit/UIProcess/API/APIUserStyleSheet.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIUserStyleSheet_h
>-#define APIUserStyleSheet_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "APIUserContentWorld.h"
>@@ -56,4 +55,3 @@ private:
> 
> } // namespace API
> 
>-#endif // APIUserStyleSheet_h
>diff --git a/Source/WebKit/UIProcess/API/APIWebsiteDataRecord.h b/Source/WebKit/UIProcess/API/APIWebsiteDataRecord.h
>index 0ccdb219078..f9aa6f96818 100644
>--- a/Source/WebKit/UIProcess/API/APIWebsiteDataRecord.h
>+++ b/Source/WebKit/UIProcess/API/APIWebsiteDataRecord.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIWebsiteDataRecord_h
>-#define APIWebsiteDataRecord_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "WebsiteDataRecord.h"
>@@ -46,4 +45,3 @@ private:
> 
> }
> 
>-#endif // APIWebsiteDataRecord_h
>diff --git a/Source/WebKit/UIProcess/API/APIWindowFeatures.h b/Source/WebKit/UIProcess/API/APIWindowFeatures.h
>index ccedf79fdf1..fde2bee1aba 100644
>--- a/Source/WebKit/UIProcess/API/APIWindowFeatures.h
>+++ b/Source/WebKit/UIProcess/API/APIWindowFeatures.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIWindowFeatures_h
>-#define APIWindowFeatures_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/WindowFeatures.h>
>@@ -46,4 +45,3 @@ private:
> 
> }
> 
>-#endif // APIWindowFeatures_h
>diff --git a/Source/WebKit/UIProcess/API/C/WKContextMenuListener.h b/Source/WebKit/UIProcess/API/C/WKContextMenuListener.h
>index 2b50d7dc2ac..e3b41d0f39e 100644
>--- a/Source/WebKit/UIProcess/API/C/WKContextMenuListener.h
>+++ b/Source/WebKit/UIProcess/API/C/WKContextMenuListener.h
>@@ -23,7 +23,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKContextMenuListener_h
>+#define WKContextMenuListener_h
> 
> #include <WebKit/WKBase.h>
> 
>@@ -38,3 +39,5 @@ WK_EXPORT void WKContextMenuListenerUseContextMenuItems(WKContextMenuListenerRef
> #ifdef __cplusplus
> }
> #endif
>+
>+#endif
>diff --git a/Source/WebKit/UIProcess/API/C/WKFramePolicyListener.h b/Source/WebKit/UIProcess/API/C/WKFramePolicyListener.h
>index 9d2ccfcade9..eb234f66f97 100644
>--- a/Source/WebKit/UIProcess/API/C/WKFramePolicyListener.h
>+++ b/Source/WebKit/UIProcess/API/C/WKFramePolicyListener.h
>@@ -23,7 +23,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKFramePolicyListener_h
>+#define WKFramePolicyListener_h
> 
> #include <WebKit/WKBase.h>
> 
>@@ -41,3 +42,5 @@ WK_EXPORT void WKFramePolicyListenerUseWithPolicies(WKFramePolicyListenerRef, WK
> #ifdef __cplusplus
> }
> #endif
>+
>+#endif
>diff --git a/Source/WebKit/UIProcess/API/C/WKPageUIClient.h b/Source/WebKit/UIProcess/API/C/WKPageUIClient.h
>index a649b1d7dcc..53d4806db37 100644
>--- a/Source/WebKit/UIProcess/API/C/WKPageUIClient.h
>+++ b/Source/WebKit/UIProcess/API/C/WKPageUIClient.h
>@@ -23,7 +23,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKPageUIClient_h
>+#define WKPageUIClient_h
> 
> #include <WebKit/WKBase.h>
> #include <WebKit/WKEvent.h>
>@@ -1036,3 +1037,5 @@ typedef struct WKPageUIClientV11 {
> #ifdef __cplusplus
> }
> #endif
>+
>+#endif
>diff --git a/Source/WebKit/UIProcess/API/C/WKProcessTerminationReason.h b/Source/WebKit/UIProcess/API/C/WKProcessTerminationReason.h
>index 620e85a86f8..613b77511fd 100644
>--- a/Source/WebKit/UIProcess/API/C/WKProcessTerminationReason.h
>+++ b/Source/WebKit/UIProcess/API/C/WKProcessTerminationReason.h
>@@ -23,7 +23,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKProcessTerminationReason_h
>+#define WKProcessTerminationReason_h
> 
> #include <stdint.h>
> 
>@@ -42,3 +43,5 @@ typedef uint32_t WKProcessTerminationReason;
> #ifdef __cplusplus
> }
> #endif
>+
>+#endif
>diff --git a/Source/WebKit/UIProcess/API/C/WKTestingSupport.h b/Source/WebKit/UIProcess/API/C/WKTestingSupport.h
>index cff470161e7..16e054b10dd 100644
>--- a/Source/WebKit/UIProcess/API/C/WKTestingSupport.h
>+++ b/Source/WebKit/UIProcess/API/C/WKTestingSupport.h
>@@ -23,7 +23,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKTestingSupport_h
>+#define WKTestingSupport_h
> 
> #include <WebKit/WKBase.h>
> 
>@@ -37,3 +38,5 @@ WK_EXPORT size_t WKGetWebURLSchemeTaskInstanceCount();
> #ifdef __cplusplus
> }
> #endif
>+
>+#endif
>diff --git a/Source/WebKit/UIProcess/API/C/WKWebsitePolicies.h b/Source/WebKit/UIProcess/API/C/WKWebsitePolicies.h
>index afcf421fc34..c87fd4eae17 100644
>--- a/Source/WebKit/UIProcess/API/C/WKWebsitePolicies.h
>+++ b/Source/WebKit/UIProcess/API/C/WKWebsitePolicies.h
>@@ -23,7 +23,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKWebsitePolicies_h
>+#define WKWebsitePolicies_h
> 
> #include <WebKit/WKBase.h>
> 
>@@ -76,3 +77,5 @@ WK_EXPORT void WKWebsitePoliciesSetDataStore(WKWebsitePoliciesRef, WKWebsiteData
> #ifdef __cplusplus
> }
> #endif
>+
>+#endif
>diff --git a/Source/WebKit/UIProcess/API/C/mac/WKProtectionSpaceNS.h b/Source/WebKit/UIProcess/API/C/mac/WKProtectionSpaceNS.h
>index e433e22c4ae..a86e034e8fc 100644
>--- a/Source/WebKit/UIProcess/API/C/mac/WKProtectionSpaceNS.h
>+++ b/Source/WebKit/UIProcess/API/C/mac/WKProtectionSpaceNS.h
>@@ -23,7 +23,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKProtectionSpaceNS_h
>+#define WKProtectionSpaceNS_h
> 
> #include <Foundation/Foundation.h>
> #include <WebKit/WKBase.h>
>@@ -37,3 +38,5 @@ WK_EXPORT NSURLProtectionSpace *WKProtectionSpaceCopyNSURLProtectionSpace(WKProt
> #ifdef __cplusplus
> }
> #endif
>+
>+#endif
>diff --git a/Source/WebKit/UIProcess/API/C/win/WKAPICastWin.h b/Source/WebKit/UIProcess/API/C/win/WKAPICastWin.h
>index 2d418703b69..16731d60649 100644
>--- a/Source/WebKit/UIProcess/API/C/win/WKAPICastWin.h
>+++ b/Source/WebKit/UIProcess/API/C/win/WKAPICastWin.h
>@@ -24,7 +24,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKAPICastWin_h
>+#define WKAPICastWin_h
> 
> #ifndef WKAPICast_h
> #error "Please #include \"WKAPICast.h\" instead of this file directly."
>@@ -37,3 +38,5 @@ class WebView;
> WK_ADD_API_MAPPING(WKViewRef, WebView)
> 
> } // namespace WebKit
>+
>+#endif
>diff --git a/Source/WebKit/UIProcess/API/C/win/WKView.h b/Source/WebKit/UIProcess/API/C/win/WKView.h
>index f151d8af433..3e692f0c444 100644
>--- a/Source/WebKit/UIProcess/API/C/win/WKView.h
>+++ b/Source/WebKit/UIProcess/API/C/win/WKView.h
>@@ -24,7 +24,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKView_h
>+#define WKView_h
> 
> #include <WebKit/WKBase.h>
> #include <WebKit/WKGeometry.h>
>@@ -46,3 +47,5 @@ WK_EXPORT void WKViewSetScrollOffsetOnNextResize(WKViewRef view, WKSize scrollOf
> #ifdef __cplusplus
> }
> #endif
>+
>+#endif
>diff --git a/Source/WebKit/UIProcess/API/Cocoa/PageLoadStateObserver.h b/Source/WebKit/UIProcess/API/Cocoa/PageLoadStateObserver.h
>index 95e9ba2ada9..01210007950 100644
>--- a/Source/WebKit/UIProcess/API/Cocoa/PageLoadStateObserver.h
>+++ b/Source/WebKit/UIProcess/API/Cocoa/PageLoadStateObserver.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PageLoadStateObserver_h
>-#define PageLoadStateObserver_h
>+#pragma once
> 
> #import "PageLoadState.h"
> 
>@@ -114,4 +113,3 @@ private:
> 
> }
> 
>-#endif // PageLoadStateObserver_h
>diff --git a/Source/WebKit/UIProcess/API/cpp/WKRetainPtr.h b/Source/WebKit/UIProcess/API/cpp/WKRetainPtr.h
>index 6529110e2eb..f6e1d0ea860 100644
>--- a/Source/WebKit/UIProcess/API/cpp/WKRetainPtr.h
>+++ b/Source/WebKit/UIProcess/API/cpp/WKRetainPtr.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WKRetainPtr_h
>-#define WKRetainPtr_h
>+#pragma once
> 
> #include <WebKit/WKType.h>
> #include <algorithm>
>@@ -284,4 +283,3 @@ template<typename P> struct HashTraits<WKRetainPtr<P>> : SimpleClassHashTraits<W
> 
> } // namespace WTF
> 
>-#endif // WKRetainPtr_h
>diff --git a/Source/WebKit/UIProcess/API/glib/WebKitContextMenuClient.h b/Source/WebKit/UIProcess/API/glib/WebKitContextMenuClient.h
>index 9b28bf998ba..550169e3aed 100644
>--- a/Source/WebKit/UIProcess/API/glib/WebKitContextMenuClient.h
>+++ b/Source/WebKit/UIProcess/API/glib/WebKitContextMenuClient.h
>@@ -17,11 +17,9 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitContextMenuClient_h
>-#define WebKitContextMenuClient_h
>+#pragma once
> 
> #include "WebKitWebView.h"
> 
> void attachContextMenuClientToView(WebKitWebView*);
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/glib/WebKitDownloadClient.h b/Source/WebKit/UIProcess/API/glib/WebKitDownloadClient.h
>index c2566e897d6..72f50721802 100644
>--- a/Source/WebKit/UIProcess/API/glib/WebKitDownloadClient.h
>+++ b/Source/WebKit/UIProcess/API/glib/WebKitDownloadClient.h
>@@ -17,11 +17,9 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDownloadClient_h
>-#define WebKitDownloadClient_h
>+#pragma once
> 
> #include "WebKitWebContext.h"
> 
> void attachDownloadClientToContext(WebKitWebContext*);
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/glib/WebKitFormClient.h b/Source/WebKit/UIProcess/API/glib/WebKitFormClient.h
>index a37022731f4..611e984e881 100644
>--- a/Source/WebKit/UIProcess/API/glib/WebKitFormClient.h
>+++ b/Source/WebKit/UIProcess/API/glib/WebKitFormClient.h
>@@ -17,11 +17,9 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitFormClient_h
>-#define WebKitFormClient_h
>+#pragma once
> 
> #include "WebKitWebView.h"
> 
> void attachFormClientToView(WebKitWebView*);
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/glib/WebKitInjectedBundleClient.h b/Source/WebKit/UIProcess/API/glib/WebKitInjectedBundleClient.h
>index 7f7c791790e..c7f5919e020 100644
>--- a/Source/WebKit/UIProcess/API/glib/WebKitInjectedBundleClient.h
>+++ b/Source/WebKit/UIProcess/API/glib/WebKitInjectedBundleClient.h
>@@ -17,11 +17,9 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitInjectedBundleClient_h
>-#define WebKitInjectedBundleClient_h
>+#pragma once
> 
> #include "WebKitWebContext.h"
> 
> void attachInjectedBundleClientToContext(WebKitWebContext*);
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/glib/WebKitSecurityManagerPrivate.h b/Source/WebKit/UIProcess/API/glib/WebKitSecurityManagerPrivate.h
>index feabdced6f7..f868c76abe4 100644
>--- a/Source/WebKit/UIProcess/API/glib/WebKitSecurityManagerPrivate.h
>+++ b/Source/WebKit/UIProcess/API/glib/WebKitSecurityManagerPrivate.h
>@@ -17,12 +17,10 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitSecurityManagerPrivate_h
>-#define WebKitSecurityManagerPrivate_h
>+#pragma once
> 
> #include "WebKitSecurityManager.h"
> #include "WebKitWebContext.h"
> 
> WebKitSecurityManager* webkitSecurityManagerCreate(WebKitWebContext*);
> 
>-#endif // WebKitSecurityManagerPrivate_h
>diff --git a/Source/WebKit/UIProcess/API/glib/WebKitSettingsPrivate.h b/Source/WebKit/UIProcess/API/glib/WebKitSettingsPrivate.h
>index c23a8cd1f69..d2738338b41 100644
>--- a/Source/WebKit/UIProcess/API/glib/WebKitSettingsPrivate.h
>+++ b/Source/WebKit/UIProcess/API/glib/WebKitSettingsPrivate.h
>@@ -23,12 +23,10 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebKitSettingsPrivate_h
>-#define WebKitSettingsPrivate_h
>+#pragma once
> 
> #include "WebKitSettings.h"
> #include "WebPreferences.h"
> 
> WebKit::WebPreferences* webkitSettingsGetPreferences(WebKitSettings*);
> 
>-#endif // WebKitSettingsPrivate_h
>diff --git a/Source/WebKit/UIProcess/API/glib/WebKitUserContentManagerPrivate.h b/Source/WebKit/UIProcess/API/glib/WebKitUserContentManagerPrivate.h
>index f791a5357b4..c6c7383835d 100644
>--- a/Source/WebKit/UIProcess/API/glib/WebKitUserContentManagerPrivate.h
>+++ b/Source/WebKit/UIProcess/API/glib/WebKitUserContentManagerPrivate.h
>@@ -17,12 +17,10 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitUserContentManagerPrivate_h
>-#define WebKitUserContentManagerPrivate_h
>+#pragma once
> 
> #include "WebKitUserContentManager.h"
> #include "WebUserContentControllerProxy.h"
> 
> WebKit::WebUserContentControllerProxy* webkitUserContentManagerGetUserContentControllerProxy(WebKitUserContentManager*);
> 
>-#endif // WebKitUserContentManagerPrivate_h
>diff --git a/Source/WebKit/UIProcess/API/glib/WebKitUserContentPrivate.h b/Source/WebKit/UIProcess/API/glib/WebKitUserContentPrivate.h
>index 444e2caaa72..47f14dde9b2 100644
>--- a/Source/WebKit/UIProcess/API/glib/WebKitUserContentPrivate.h
>+++ b/Source/WebKit/UIProcess/API/glib/WebKitUserContentPrivate.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitUserContentPrivate_h
>-#define WebKitUserContentPrivate_h
>+#pragma once
> 
> #include "APIUserScript.h"
> #include "APIUserStyleSheet.h"
>@@ -29,4 +28,3 @@
> API::UserScript& webkitUserScriptGetUserScript(WebKitUserScript*);
> API::UserStyleSheet& webkitUserStyleSheetGetUserStyleSheet(WebKitUserStyleSheet*);
> 
>-#endif // WebKitUserContentPrivate_h
>diff --git a/Source/WebKit/UIProcess/API/glib/WebKitWebViewSessionStatePrivate.h b/Source/WebKit/UIProcess/API/glib/WebKitWebViewSessionStatePrivate.h
>index 4c7f4e15a2f..133875506fe 100644
>--- a/Source/WebKit/UIProcess/API/glib/WebKitWebViewSessionStatePrivate.h
>+++ b/Source/WebKit/UIProcess/API/glib/WebKitWebViewSessionStatePrivate.h
>@@ -20,10 +20,8 @@
> #include "SessionState.h"
> #include "WebKitWebViewSessionState.h"
> 
>-#ifndef WebKitWebViewSessionStatePrivate_h
>-#define WebKitWebViewSessionStatePrivate_h
>+#pragma once
> 
> WebKitWebViewSessionState* webkitWebViewSessionStateCreate(WebKit::SessionState&&);
> const WebKit::SessionState& webkitWebViewSessionStateGetSessionState(WebKitWebViewSessionState*);
> 
>-#endif // WebKitWebViewSessionStatePrivate_h
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitApplicationInfo.h b/Source/WebKit/UIProcess/API/gtk/WebKitApplicationInfo.h
>index 34db9b9cc79..4e721b618f5 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitApplicationInfo.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitApplicationInfo.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitApplicationInfo_h
>-#define WebKitApplicationInfo_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -66,4 +65,3 @@ webkit_application_info_get_version (WebKitApplicationInfo *info,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitAuthenticationDialog.h b/Source/WebKit/UIProcess/API/gtk/WebKitAuthenticationDialog.h
>index 0e5071f53db..59fff56abe8 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitAuthenticationDialog.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitAuthenticationDialog.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitAuthenticationDialog_h
>-#define WebKitAuthenticationDialog_h
>+#pragma once
> 
> #include "WebKitAuthenticationRequest.h"
> #include <gtk/gtk.h>
>@@ -56,4 +55,3 @@ GtkWidget* webkitAuthenticationDialogNew(WebKitAuthenticationRequest*, Credentia
> 
> G_END_DECLS
> 
>-#endif // WebKitAuthenticationDialog_h
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitAuthenticationRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitAuthenticationRequest.h
>index 59cc9f08c7a..38c4f3c782a 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitAuthenticationRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitAuthenticationRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitAuthenticationRequest_h
>-#define WebKitAuthenticationRequest_h
>+#pragma once
> 
> #include <gtk/gtk.h>
> #include <webkit2/WebKitCredential.h>
>@@ -122,4 +121,3 @@ webkit_authentication_request_cancel                  (WebKitAuthenticationReque
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitAutocleanups.h b/Source/WebKit/UIProcess/API/gtk/WebKitAutocleanups.h
>index c32c099c049..2b70ff90303 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitAutocleanups.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitAutocleanups.h
>@@ -27,8 +27,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitAutocleanups_h
>-#define WebKitAutocleanups_h
>+#pragma once
> 
> #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
> #ifndef __GI_SCANNER__
>@@ -86,4 +85,3 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC (WebKitWebViewSessionState, webkit_web_view_sessio
> #endif // __GI_SCANNER__
> #endif // G_DEFINE_AUTOPTR_CLEANUP_FUNC
> 
>-#endif // WebKitAutocleanups_h
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitAutomationSession.h b/Source/WebKit/UIProcess/API/gtk/WebKitAutomationSession.h
>index 839dfe34f9d..de15a54fb19 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitAutomationSession.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitAutomationSession.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitAutomationSession_h
>-#define WebKitAutomationSession_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitApplicationInfo.h>
>@@ -71,4 +70,3 @@ webkit_automation_session_get_application_info (WebKitAutomationSession *session
> 
> G_END_DECLS
> 
>-#endif /* WebKitAutomationSession_h */
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitBackForwardList.h b/Source/WebKit/UIProcess/API/gtk/WebKitBackForwardList.h
>index 6fbd42ab0f1..8e857bccc4a 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitBackForwardList.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitBackForwardList.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitBackForwardList_h
>-#define WebKitBackForwardList_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitBackForwardListItem.h>
>@@ -90,4 +89,3 @@ webkit_back_forward_list_get_forward_list_with_limit (WebKitBackForwardList *bac
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitBackForwardListItem.h b/Source/WebKit/UIProcess/API/gtk/WebKitBackForwardListItem.h
>index 5090e516c6a..d96db27e51d 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitBackForwardListItem.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitBackForwardListItem.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitBackForwardListItem_h
>-#define WebKitBackForwardListItem_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -69,4 +68,3 @@ webkit_back_forward_list_item_get_original_uri (WebKitBackForwardListItem* list_
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitColorChooserRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitColorChooserRequest.h
>index 33a4ebb35fa..34dfabbb1e3 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitColorChooserRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitColorChooserRequest.h
>@@ -28,8 +28,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitColorChooserRequest_h
>-#define WebKitColorChooserRequest_h
>+#pragma once
> 
> #include <gtk/gtk.h>
> #include <webkit2/WebKitDefines.h>
>@@ -81,4 +80,3 @@ webkit_color_chooser_request_cancel                (WebKitColorChooserRequest *r
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitColorChooserRequestPrivate.h b/Source/WebKit/UIProcess/API/gtk/WebKitColorChooserRequestPrivate.h
>index 3acfe2821d7..69b1c1bf03a 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitColorChooserRequestPrivate.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitColorChooserRequestPrivate.h
>@@ -24,12 +24,10 @@
>  * POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebKitColorChooserRequestPrivate_h
>-#define WebKitColorChooserRequestPrivate_h
>+#pragma once
> 
> #include "WebKitColorChooser.h"
> #include "WebKitColorChooserRequest.h"
> 
> WebKitColorChooserRequest* webkitColorChooserRequestCreate(WebKit::WebKitColorChooser*);
> 
>-#endif // WebKitColorChooserRequestPrivate_h
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitContextMenu.h b/Source/WebKit/UIProcess/API/gtk/WebKitContextMenu.h
>index 9b50c6470f4..86102f67a3d 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitContextMenu.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitContextMenu.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitContextMenu_h
>-#define WebKitContextMenu_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitContextMenuItem.h>
>@@ -114,4 +113,3 @@ webkit_context_menu_get_user_data        (WebKitContextMenu     *menu);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitContextMenuActions.h b/Source/WebKit/UIProcess/API/gtk/WebKitContextMenuActions.h
>index 61dc24399a2..3c0c7d46f0f 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitContextMenuActions.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitContextMenuActions.h
>@@ -23,8 +23,7 @@
> 
> #include <glib.h>
> 
>-#ifndef WebKitContextMenuActions_h
>-#define WebKitContextMenuActions_h
>+#pragma once
> 
> G_BEGIN_DECLS
> 
>@@ -131,4 +130,3 @@ typedef enum {
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitContextMenuItem.h b/Source/WebKit/UIProcess/API/gtk/WebKitContextMenuItem.h
>index 9e622d1d7a9..ade14d92c3c 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitContextMenuItem.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitContextMenuItem.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitContextMenuItem_h
>-#define WebKitContextMenuItem_h
>+#pragma once
> 
> #include <gtk/gtk.h>
> #include <webkit2/WebKitDefines.h>
>@@ -103,4 +102,3 @@ webkit_context_menu_item_get_submenu                      (WebKitContextMenuItem
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitCookieManager.h b/Source/WebKit/UIProcess/API/gtk/WebKitCookieManager.h
>index 1b8d167696b..9325dc7edd6 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitCookieManager.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitCookieManager.h
>@@ -22,8 +22,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitCookieManager_h
>-#define WebKitCookieManager_h
>+#pragma once
> 
> #include <gio/gio.h>
> #include <glib-object.h>
>@@ -165,4 +164,3 @@ webkit_cookie_manager_delete_all_cookies              (WebKitCookieManager
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitCredential.h b/Source/WebKit/UIProcess/API/gtk/WebKitCredential.h
>index 6350e5e129c..0be49decd2a 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitCredential.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitCredential.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitCredential_h
>-#define WebKitCredential_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -77,4 +76,3 @@ webkit_credential_get_persistence      (WebKitCredential            *credential)
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitDefines.h b/Source/WebKit/UIProcess/API/gtk/WebKitDefines.h
>index 520e9957c38..96c39be73c4 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitDefines.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitDefines.h
>@@ -27,8 +27,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDefines_h
>-#define WebKitDefines_h
>+#pragma once
> 
> #include <glib.h>
> 
>@@ -45,4 +44,3 @@
> #define WEBKIT_DEPRECATED WEBKIT_API G_DEPRECATED
> #define WEBKIT_DEPRECATED_FOR(f) WEBKIT_API G_DEPRECATED_FOR(f)
> 
>-#endif // WebKitDefines_h
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitDownload.h b/Source/WebKit/UIProcess/API/gtk/WebKitDownload.h
>index 7e6bfeb46dc..64a96da5e1d 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitDownload.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitDownload.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDownload_h
>-#define WebKitDownload_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -101,4 +100,3 @@ webkit_download_set_allow_overwrite      (WebKitDownload *download,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitEditingCommands.h b/Source/WebKit/UIProcess/API/gtk/WebKitEditingCommands.h
>index f6a2061caba..bc231436e34 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitEditingCommands.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitEditingCommands.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitEditingCommands_h
>-#define WebKitEditingCommands_h
>+#pragma once
> 
> G_BEGIN_DECLS
> 
>@@ -121,4 +120,3 @@ G_BEGIN_DECLS
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitEditorState.h b/Source/WebKit/UIProcess/API/gtk/WebKitEditorState.h
>index 7014053e216..b9b775c8690 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitEditorState.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitEditorState.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitEditorState_h
>-#define WebKitEditorState_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -99,4 +98,3 @@ webkit_editor_state_is_redo_available     (WebKitEditorState *editor_state);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitError.h b/Source/WebKit/UIProcess/API/gtk/WebKitError.h
>index 78b8ddcb8a7..c362a055d34 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitError.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitError.h
>@@ -22,8 +22,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitError_h
>-#define WebKitError_h
>+#pragma once
> 
> #include <webkit2/WebKitDefines.h>
> 
>@@ -164,4 +163,3 @@ webkit_snapshot_error_quark   (void);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitFaviconDatabase.h b/Source/WebKit/UIProcess/API/gtk/WebKitFaviconDatabase.h
>index 45fbb5d88d9..5310d9fdf3d 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitFaviconDatabase.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitFaviconDatabase.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFaviconDatabase_h
>-#define WebKitFaviconDatabase_h
>+#pragma once
> 
> #include <cairo.h>
> #include <gio/gio.h>
>@@ -96,4 +95,3 @@ webkit_favicon_database_clear              (WebKitFaviconDatabase *database);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitFileChooserRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitFileChooserRequest.h
>index 2b006902406..77926acd3da 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitFileChooserRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitFileChooserRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFileChooserRequest_h
>-#define WebKitFileChooserRequest_h
>+#pragma once
> 
> #include <gtk/gtk.h>
> #include <webkit2/WebKitDefines.h>
>@@ -80,4 +79,3 @@ webkit_file_chooser_request_cancel                (WebKitFileChooserRequest *req
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitFindController.h b/Source/WebKit/UIProcess/API/gtk/WebKitFindController.h
>index 8f3e438ff23..c728f4be2a4 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitFindController.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitFindController.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFindController_h
>-#define WebKitFindController_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -119,4 +118,3 @@ webkit_find_controller_get_web_view        (WebKitFindController *find_controlle
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitFormSubmissionRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitFormSubmissionRequest.h
>index e555ef1e944..61de1c10ea9 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitFormSubmissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitFormSubmissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFormSubmissionRequest_h
>-#define WebKitFormSubmissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -72,4 +71,3 @@ webkit_form_submission_request_submit           (WebKitFormSubmissionRequest  *r
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitForwardDeclarations.h b/Source/WebKit/UIProcess/API/gtk/WebKitForwardDeclarations.h
>index 543f4b13688..e1f26cf2251 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitForwardDeclarations.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitForwardDeclarations.h
>@@ -27,8 +27,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitForward_h
>-#define WebKitForward_h
>+#pragma once
> 
> typedef struct _WebKitPrintOperation  WebKitPrintOperation;
> typedef struct _WebKitFindController  WebKitFindController;
>@@ -36,4 +35,3 @@ typedef struct _WebKitWebView         WebKitWebView;
> typedef struct _WebKitContextMenu     WebKitContextMenu;
> typedef struct _WebKitContextMenuItem WebKitContextMenuItem;
> 
>-#endif // WebKitForward_h
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitGeolocationPermissionRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitGeolocationPermissionRequest.h
>index 4b44af09fb9..b05d4e55ba2 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitGeolocationPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitGeolocationPermissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitGeolocationPermissionRequest_h
>-#define WebKitGeolocationPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -61,4 +60,3 @@ webkit_geolocation_permission_request_get_type (void);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitHitTestResult.h b/Source/WebKit/UIProcess/API/gtk/WebKitHitTestResult.h
>index 718573b9004..d9bbacf8bed 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitHitTestResult.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitHitTestResult.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitHitTestResult_h
>-#define WebKitHitTestResult_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -119,4 +118,3 @@ webkit_hit_test_result_context_is_scrollbar (WebKitHitTestResult *hit_test_resul
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitInstallMissingMediaPluginsPermissionRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitInstallMissingMediaPluginsPermissionRequest.h
>index e0632afa55d..e3c4c592570 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitInstallMissingMediaPluginsPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitInstallMissingMediaPluginsPermissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitInstallMissingMediaPluginsPermissionRequest_h
>-#define WebKitInstallMissingMediaPluginsPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -63,4 +62,3 @@ webkit_install_missing_media_plugins_permission_request_get_description (WebKitI
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitJavascriptResult.h b/Source/WebKit/UIProcess/API/gtk/WebKitJavascriptResult.h
>index daccdeb0da1..df772e74ff4 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitJavascriptResult.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitJavascriptResult.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitJavascriptResult_h
>-#define WebKitJavascriptResult_h
>+#pragma once
> 
> #include <JavaScriptCore/JSBase.h>
> #include <jsc/jsc.h>
>@@ -56,4 +55,3 @@ webkit_javascript_result_get_js_value       (WebKitJavascriptResult *js_result);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitMimeInfo.h b/Source/WebKit/UIProcess/API/gtk/WebKitMimeInfo.h
>index 7ec8e69c549..93246297835 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitMimeInfo.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitMimeInfo.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitMimeInfo_h
>-#define WebKitMimeInfo_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -54,4 +53,3 @@ webkit_mime_info_get_extensions  (WebKitMimeInfo *info);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitNavigationAction.h b/Source/WebKit/UIProcess/API/gtk/WebKitNavigationAction.h
>index 8848acbd110..a38885a0893 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitNavigationAction.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitNavigationAction.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNavigationAction_h
>-#define WebKitNavigationAction_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -84,4 +83,3 @@ webkit_navigation_action_is_redirect         (WebKitNavigationAction *navigation
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitNavigationPolicyDecision.h b/Source/WebKit/UIProcess/API/gtk/WebKitNavigationPolicyDecision.h
>index 0d9fb261af5..dbf855d7988 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitNavigationPolicyDecision.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitNavigationPolicyDecision.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNavigationPolicyDecision_h
>-#define WebKitNavigationPolicyDecision_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -82,4 +81,3 @@ webkit_navigation_policy_decision_get_frame_name        (WebKitNavigationPolicyD
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitNetworkProxySettings.h b/Source/WebKit/UIProcess/API/gtk/WebKitNetworkProxySettings.h
>index 00c2b39f33d..0a7061bc9b0 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitNetworkProxySettings.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitNetworkProxySettings.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNetworkProxySettings_h
>-#define WebKitNetworkProxySettings_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -53,4 +52,3 @@ webkit_network_proxy_settings_add_proxy_for_scheme (WebKitNetworkProxySettings *
> 
> G_END_DECLS
> 
>-#endif /* WebKitNetworkProxySettings_h */
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitNotification.h b/Source/WebKit/UIProcess/API/gtk/WebKitNotification.h
>index 1fd9ac64686..9407b7139e5 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitNotification.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitNotification.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNotification_h
>-#define WebKitNotification_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -81,4 +80,3 @@ webkit_notification_clicked                  (WebKitNotification *notification);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitNotificationPermissionRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitNotificationPermissionRequest.h
>index d2fb41104f4..b4696631f33 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitNotificationPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitNotificationPermissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNotificationPermissionRequest_h
>-#define WebKitNotificationPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -56,4 +55,3 @@ webkit_notification_permission_request_get_type (void);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitOptionMenu.h b/Source/WebKit/UIProcess/API/gtk/WebKitOptionMenu.h
>index e668f8b4142..00322af372f 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitOptionMenu.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitOptionMenu.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitOptionMenu_h
>-#define WebKitOptionMenu_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -79,4 +78,3 @@ webkit_option_menu_close          (WebKitOptionMenu *menu);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitOptionMenuItem.h b/Source/WebKit/UIProcess/API/gtk/WebKitOptionMenuItem.h
>index ded26f1e9e0..d71948151d8 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitOptionMenuItem.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitOptionMenuItem.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitOptionMenuItem_h
>-#define WebKitOptionMenuItem_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -62,4 +61,3 @@ webkit_option_menu_item_is_selected    (WebKitOptionMenuItem *item);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitPermissionRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitPermissionRequest.h
>index a62f1f1a5b6..a57b535fb00 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitPermissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitPermissionRequest_h
>-#define WebKitPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -55,4 +54,3 @@ webkit_permission_request_deny     (WebKitPermissionRequest *request);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitPlugin.h b/Source/WebKit/UIProcess/API/gtk/WebKitPlugin.h
>index d7533c920e4..7d299b49ea3 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitPlugin.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitPlugin.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitPlugin_h
>-#define WebKitPlugin_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -72,4 +71,3 @@ webkit_plugin_get_mime_info_list (WebKitPlugin *plugin);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitPolicyDecision.h b/Source/WebKit/UIProcess/API/gtk/WebKitPolicyDecision.h
>index f192a1d379d..e7bf6512a27 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitPolicyDecision.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitPolicyDecision.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitPolicyDecision_h
>-#define WebKitPolicyDecision_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -70,4 +69,3 @@ webkit_policy_decision_download (WebKitPolicyDecision *decision);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitPrintCustomWidget.h b/Source/WebKit/UIProcess/API/gtk/WebKitPrintCustomWidget.h
>index e6cc84a0c35..f7519e1f805 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitPrintCustomWidget.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitPrintCustomWidget.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitPrintCustomWidget_h
>-#define WebKitPrintCustomWidget_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -78,4 +77,3 @@ webkit_print_custom_widget_get_title  (WebKitPrintCustomWidget *print_custom_wid
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitPrintOperation.h b/Source/WebKit/UIProcess/API/gtk/WebKitPrintOperation.h
>index 7eee5d893cf..7a02f2146de 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitPrintOperation.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitPrintOperation.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitPrintOperation_h
>-#define WebKitPrintOperation_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -98,4 +97,3 @@ webkit_print_operation_print              (WebKitPrintOperation *print_operation
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitPrintOperationPrivate.h b/Source/WebKit/UIProcess/API/gtk/WebKitPrintOperationPrivate.h
>index 8572ca7c626..8900a0bc396 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitPrintOperationPrivate.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitPrintOperationPrivate.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitPrintOperationPrivate_h
>-#define WebKitPrintOperationPrivate_h
>+#pragma once
> 
> #include "PrintInfo.h"
> #include "WebFrameProxy.h"
>@@ -27,4 +26,3 @@
> WebKitPrintOperationResponse webkitPrintOperationRunDialogForFrame(WebKitPrintOperation*, GtkWindow* parent, WebKit::WebFrameProxy*);
> void webkitPrintOperationSetPrintMode(WebKitPrintOperation*, WebKit::PrintInfo::PrintMode);
> 
>-#endif // WebKitPrintOperationPrivate_h
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitResponsePolicyDecision.h b/Source/WebKit/UIProcess/API/gtk/WebKitResponsePolicyDecision.h
>index b4e8fe2ffbe..1035dc78d2d 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitResponsePolicyDecision.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitResponsePolicyDecision.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitResponsePolicyDecision_h
>-#define WebKitResponsePolicyDecision_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -73,4 +72,3 @@ webkit_response_policy_decision_is_mime_type_supported (WebKitResponsePolicyDeci
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitScriptDialog.h b/Source/WebKit/UIProcess/API/gtk/WebKitScriptDialog.h
>index 71095beed98..90285790715 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitScriptDialog.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitScriptDialog.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitScriptDialog_h
>-#define WebKitScriptDialog_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -75,4 +74,3 @@ webkit_script_dialog_prompt_set_text         (WebKitScriptDialog *dialog,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitSecurityManager.h b/Source/WebKit/UIProcess/API/gtk/WebKitSecurityManager.h
>index e8cf9e7cdc7..453ec6f5052 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitSecurityManager.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitSecurityManager.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitSecurityManager_h
>-#define WebKitSecurityManager_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -108,4 +107,3 @@ webkit_security_manager_uri_scheme_is_empty_document            (WebKitSecurityM
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitSecurityOrigin.h b/Source/WebKit/UIProcess/API/gtk/WebKitSecurityOrigin.h
>index 6dca2b77ea6..e9948878bb6 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitSecurityOrigin.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitSecurityOrigin.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitSecurityOrigin_h
>-#define WebKitSecurityOrigin_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -67,4 +66,3 @@ webkit_security_origin_to_string    (WebKitSecurityOrigin *origin);
> 
> G_END_DECLS
> 
>-#endif /* WebKitSecurityOrigin_h */
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitSettings.h b/Source/WebKit/UIProcess/API/gtk/WebKitSettings.h
>index a749d406c5f..3018c8183f5 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitSettings.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitSettings.h
>@@ -32,8 +32,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitSettings_h
>-#define WebKitSettings_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -466,4 +465,3 @@ webkit_settings_font_size_to_pixels                            (guint32 points);
> 
> G_END_DECLS
> 
>-#endif /* WebKitSettings_h */
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitURIRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitURIRequest.h
>index 10cf63489c5..3fe5517f653 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitURIRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitURIRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitURIRequest_h
>-#define WebKitURIRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <libsoup/soup.h>
>@@ -78,4 +77,3 @@ webkit_uri_request_get_http_headers (WebKitURIRequest *request);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitURIResponse.h b/Source/WebKit/UIProcess/API/gtk/WebKitURIResponse.h
>index 67316165f2e..314712ead79 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitURIResponse.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitURIResponse.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitURIResponse_h
>-#define WebKitURIResponse_h
>+#pragma once
> 
> #include <gio/gio.h>
> #include <libsoup/soup.h>
>@@ -80,4 +79,3 @@ webkit_uri_response_get_http_headers       (WebKitURIResponse    *response);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitURISchemeRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitURISchemeRequest.h
>index 71895da5183..e82a05a3b5b 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitURISchemeRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitURISchemeRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitURISchemeRequest_h
>-#define WebKitURISchemeRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -83,4 +82,3 @@ webkit_uri_scheme_request_finish_error (WebKitURISchemeRequest *request,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitUserContent.h b/Source/WebKit/UIProcess/API/gtk/WebKitUserContent.h
>index c3f1ed569f8..c95ab8d1bcf 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitUserContent.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitUserContent.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitUserContent_h
>-#define WebKitUserContent_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -122,4 +121,3 @@ webkit_user_script_new           (const gchar                    *source,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitUserContentManager.h b/Source/WebKit/UIProcess/API/gtk/WebKitUserContentManager.h
>index 86d24a11352..cb97bcebd05 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitUserContentManager.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitUserContentManager.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitUserContentManager_h
>-#define WebKitUserContentManager_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -87,4 +86,3 @@ webkit_user_content_manager_remove_all_scripts      (WebKitUserContentManager *m
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitUserMediaPermissionRequest.h b/Source/WebKit/UIProcess/API/gtk/WebKitUserMediaPermissionRequest.h
>index ad382b1ba4d..57a5312d61e 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitUserMediaPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitUserMediaPermissionRequest.h
>@@ -20,8 +20,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitUserMediaPermissionRequest_h
>-#define WebKitUserMediaPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -66,4 +65,3 @@ webkit_user_media_permission_is_for_video_device (WebKitUserMediaPermissionReque
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWebContext.h b/Source/WebKit/UIProcess/API/gtk/WebKitWebContext.h
>index 3149a329c27..0f7b65eb1b0 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWebContext.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWebContext.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebContext_h
>-#define WebKitWebContext_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitAutomationSession.h>
>@@ -308,4 +307,3 @@ webkit_web_context_initialize_notification_permissions
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWebInspector.h b/Source/WebKit/UIProcess/API/gtk/WebKitWebInspector.h
>index 686f949acaa..71a92b1bb6a 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWebInspector.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWebInspector.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebInspector_h
>-#define WebKitWebInspector_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -88,4 +87,3 @@ webkit_web_inspector_get_can_attach      (WebKitWebInspector* inspector);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWebResource.h b/Source/WebKit/UIProcess/API/gtk/WebKitWebResource.h
>index 7463686abcb..1e3009e68da 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWebResource.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWebResource.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebResource_h
>-#define WebKitWebResource_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <gio/gio.h>
>@@ -80,4 +79,3 @@ webkit_web_resource_get_data_finish (WebKitWebResource  *resource,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWebView.h b/Source/WebKit/UIProcess/API/gtk/WebKitWebView.h
>index 03dfea538bf..1bbe8c630e9 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWebView.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWebView.h
>@@ -25,8 +25,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebView_h
>-#define WebKitWebView_h
>+#pragma once
> 
> #include <JavaScriptCore/JSBase.h>
> #include <webkit2/WebKitAuthenticationRequest.h>
>@@ -542,4 +541,3 @@ webkit_web_view_restore_session_state                (WebKitWebView
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.h b/Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.h
>index f24457f57bc..63a26dcbada 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWebViewBase.h
>@@ -29,8 +29,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebViewBase_h
>-#define WebKitWebViewBase_h
>+#pragma once
> 
> #include <gtk/gtk.h>
> #include <webkit2/WebKitDefines.h>
>@@ -68,4 +67,3 @@ webkit_web_view_base_get_type (void);
> 
> G_END_DECLS
> 
>-#endif // WebKitWebViewBase_h
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWebViewBaseAccessible.h b/Source/WebKit/UIProcess/API/gtk/WebKitWebViewBaseAccessible.h
>index 3e932c3cd0c..973abe7cbff 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWebViewBaseAccessible.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWebViewBaseAccessible.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitWebViewBaseAccessible_h
>-#define WebKitWebViewBaseAccessible_h
>+#pragma once
> 
> #include <atk/atk.h>
> 
>@@ -52,4 +51,3 @@ WebKitWebViewBaseAccessible* webkitWebViewBaseAccessibleNew(GtkWidget*);
> 
> G_END_DECLS
> 
>-#endif // WebKitWebViewBaseAccessible_h
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWebViewSessionState.h b/Source/WebKit/UIProcess/API/gtk/WebKitWebViewSessionState.h
>index 73f4a4a6996..b8a27eae5e8 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWebViewSessionState.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWebViewSessionState.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebViewSessionState_h
>-#define WebKitWebViewSessionState_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -50,4 +49,3 @@ webkit_web_view_session_state_serialize (WebKitWebViewSessionState *state);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWebsiteData.h b/Source/WebKit/UIProcess/API/gtk/WebKitWebsiteData.h
>index 0bcfc203f53..f5737b3c897 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWebsiteData.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWebsiteData.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebsiteData_h
>-#define WebKitWebsiteData_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -86,4 +85,3 @@ webkit_website_data_get_size      (WebKitWebsiteData     *website_data,
> 
> G_END_DECLS
> 
>-#endif /* WebKitWebsiteData_h */
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWebsiteDataManager.h b/Source/WebKit/UIProcess/API/gtk/WebKitWebsiteDataManager.h
>index 71e67891c65..e74f3794a71 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWebsiteDataManager.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWebsiteDataManager.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebsiteDataManager_h
>-#define WebKitWebsiteDataManager_h
>+#pragma once
> 
> #include <gio/gio.h>
> #include <webkit2/WebKitCookieManager.h>
>@@ -141,4 +140,3 @@ webkit_website_data_manager_clear_finish                               (WebKitWe
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/WebKitWindowProperties.h b/Source/WebKit/UIProcess/API/gtk/WebKitWindowProperties.h
>index edbcee98da9..8c8cffb5dca 100644
>--- a/Source/WebKit/UIProcess/API/gtk/WebKitWindowProperties.h
>+++ b/Source/WebKit/UIProcess/API/gtk/WebKitWindowProperties.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit2.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWindowProperties_h
>-#define WebKitWindowProperties_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <gtk/gtk.h>
>@@ -86,4 +85,3 @@ webkit_window_properties_get_fullscreen          (WebKitWindowProperties *window
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/gtk/webkit2.h b/Source/WebKit/UIProcess/API/gtk/webkit2.h
>index fb0476f1b17..15e6f6024e5 100644
>--- a/Source/WebKit/UIProcess/API/gtk/webkit2.h
>+++ b/Source/WebKit/UIProcess/API/gtk/webkit2.h
>@@ -22,8 +22,7 @@
> #error "Headers <webkit2/webkit2.h> and <webkit2/webkit-web-extension.h> cannot be included together."
> #endif
> 
>-#ifndef __WEBKIT_2_H__
>-#define __WEBKIT_2_H__
>+#pragma once
> 
> #define __WEBKIT2_H_INSIDE__
> 
>@@ -90,4 +89,3 @@
> 
> #undef __WEBKIT2_H_INSIDE__
> 
>-#endif /* __WEBKIT2_H__ */
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitApplicationInfo.h b/Source/WebKit/UIProcess/API/wpe/WebKitApplicationInfo.h
>index 18736215a32..efff102135b 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitApplicationInfo.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitApplicationInfo.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitApplicationInfo_h
>-#define WebKitApplicationInfo_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -66,4 +65,3 @@ webkit_application_info_get_version (WebKitApplicationInfo *info,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitAuthenticationRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitAuthenticationRequest.h
>index 98ea6fcf3ea..0abeb7b5339 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitAuthenticationRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitAuthenticationRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitAuthenticationRequest_h
>-#define WebKitAuthenticationRequest_h
>+#pragma once
> 
> #include <wpe/WebKitCredential.h>
> #include <wpe/WebKitDefines.h>
>@@ -121,4 +120,3 @@ webkit_authentication_request_cancel                  (WebKitAuthenticationReque
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitAutomationSession.h b/Source/WebKit/UIProcess/API/wpe/WebKitAutomationSession.h
>index c0d4f256727..bd81f8b68d8 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitAutomationSession.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitAutomationSession.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitAutomationSession_h
>-#define WebKitAutomationSession_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitApplicationInfo.h>
>@@ -71,4 +70,3 @@ webkit_automation_session_get_application_info (WebKitAutomationSession *session
> 
> G_END_DECLS
> 
>-#endif /* WebKitAutomationSession_h */
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitBackForwardList.h b/Source/WebKit/UIProcess/API/wpe/WebKitBackForwardList.h
>index cb39e8c97bc..5e227900cff 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitBackForwardList.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitBackForwardList.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitBackForwardList_h
>-#define WebKitBackForwardList_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitBackForwardListItem.h>
>@@ -90,4 +89,3 @@ webkit_back_forward_list_get_forward_list_with_limit (WebKitBackForwardList *bac
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitBackForwardListItem.h b/Source/WebKit/UIProcess/API/wpe/WebKitBackForwardListItem.h
>index c971ec00f59..bab7a0b4066 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitBackForwardListItem.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitBackForwardListItem.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitBackForwardListItem_h
>-#define WebKitBackForwardListItem_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -69,4 +68,3 @@ webkit_back_forward_list_item_get_original_uri (WebKitBackForwardListItem* list_
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitContextMenu.h b/Source/WebKit/UIProcess/API/wpe/WebKitContextMenu.h
>index 4145fb06f99..56c2116eb58 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitContextMenu.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitContextMenu.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitContextMenu_h
>-#define WebKitContextMenu_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -115,4 +114,3 @@ webkit_context_menu_get_user_data        (WebKitContextMenu     *menu);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitContextMenuActions.h b/Source/WebKit/UIProcess/API/wpe/WebKitContextMenuActions.h
>index 301c219d83a..443211cb6e7 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitContextMenuActions.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitContextMenuActions.h
>@@ -23,8 +23,7 @@
> 
> #include <glib.h>
> 
>-#ifndef WebKitContextMenuActions_h
>-#define WebKitContextMenuActions_h
>+#pragma once
> 
> G_BEGIN_DECLS
> 
>@@ -121,4 +120,3 @@ typedef enum {
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitContextMenuItem.h b/Source/WebKit/UIProcess/API/wpe/WebKitContextMenuItem.h
>index 9f540aa0fd7..fb4d48ab12a 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitContextMenuItem.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitContextMenuItem.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitContextMenuItem_h
>-#define WebKitContextMenuItem_h
>+#pragma once
> 
> #include <gio/gio.h>
> #include <wpe/WebKitDefines.h>
>@@ -97,4 +96,3 @@ webkit_context_menu_item_get_submenu                      (WebKitContextMenuItem
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitCookieManager.h b/Source/WebKit/UIProcess/API/wpe/WebKitCookieManager.h
>index 3c310cf1908..63070171fad 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitCookieManager.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitCookieManager.h
>@@ -22,8 +22,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitCookieManager_h
>-#define WebKitCookieManager_h
>+#pragma once
> 
> #include <gio/gio.h>
> #include <glib-object.h>
>@@ -147,4 +146,3 @@ webkit_cookie_manager_delete_cookie_finish            (WebKitCookieManager
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitCredential.h b/Source/WebKit/UIProcess/API/wpe/WebKitCredential.h
>index babff3f6210..69b48fb6e4a 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitCredential.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitCredential.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitCredential_h
>-#define WebKitCredential_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -77,4 +76,3 @@ webkit_credential_get_persistence      (WebKitCredential            *credential)
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitDefines.h b/Source/WebKit/UIProcess/API/wpe/WebKitDefines.h
>index 77c3524c592..0cfe9ecb599 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitDefines.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitDefines.h
>@@ -27,8 +27,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDefines_h
>-#define WebKitDefines_h
>+#pragma once
> 
> #include <glib.h>
> 
>@@ -45,4 +44,3 @@
> #define WEBKIT_DEPRECATED WEBKIT_API G_DEPRECATED
> #define WEBKIT_DEPRECATED_FOR(f) WEBKIT_API G_DEPRECATED_FOR(f)
> 
>-#endif // WebKitDefines_h
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitDownload.h b/Source/WebKit/UIProcess/API/wpe/WebKitDownload.h
>index 9bff4bb57d9..80523aa862e 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitDownload.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitDownload.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDownload_h
>-#define WebKitDownload_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -102,4 +101,3 @@ webkit_download_set_allow_overwrite      (WebKitDownload *download,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitEditingCommands.h b/Source/WebKit/UIProcess/API/wpe/WebKitEditingCommands.h
>index f6767933525..b47e57d653d 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitEditingCommands.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitEditingCommands.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitEditingCommands_h
>-#define WebKitEditingCommands_h
>+#pragma once
> 
> G_BEGIN_DECLS
> 
>@@ -121,4 +120,3 @@ G_BEGIN_DECLS
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitEditorState.h b/Source/WebKit/UIProcess/API/wpe/WebKitEditorState.h
>index f9e7c7deab4..e4e0c579e93 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitEditorState.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitEditorState.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitEditorState_h
>-#define WebKitEditorState_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -99,4 +98,3 @@ webkit_editor_state_is_redo_available     (WebKitEditorState *editor_state);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitError.h b/Source/WebKit/UIProcess/API/wpe/WebKitError.h
>index 4dad4ef3d1f..8c9b3e00b98 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitError.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitError.h
>@@ -22,8 +22,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitError_h
>-#define WebKitError_h
>+#pragma once
> 
> #include <wpe/WebKitDefines.h>
> 
>@@ -146,4 +145,3 @@ webkit_snapshot_error_quark   (void);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitFaviconDatabase.h b/Source/WebKit/UIProcess/API/wpe/WebKitFaviconDatabase.h
>index 1736b22f749..8928ac68b49 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitFaviconDatabase.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitFaviconDatabase.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFaviconDatabase_h
>-#define WebKitFaviconDatabase_h
>+#pragma once
> 
> #include <gio/gio.h>
> #include <glib-object.h>
>@@ -85,4 +84,3 @@ webkit_favicon_database_clear              (WebKitFaviconDatabase *database);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitFileChooserRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitFileChooserRequest.h
>index d54ef2c9dfa..a10dea552a7 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitFileChooserRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitFileChooserRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFileChooserRequest_h
>-#define WebKitFileChooserRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -77,4 +76,3 @@ webkit_file_chooser_request_cancel                (WebKitFileChooserRequest *req
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitFindController.h b/Source/WebKit/UIProcess/API/wpe/WebKitFindController.h
>index ad3204ad0b2..660e7301783 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitFindController.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitFindController.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFindController_h
>-#define WebKitFindController_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -121,4 +120,3 @@ webkit_find_controller_get_web_view        (WebKitFindController *find_controlle
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitFormSubmissionRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitFormSubmissionRequest.h
>index bfd7879e66a..182474810de 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitFormSubmissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitFormSubmissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFormSubmissionRequest_h
>-#define WebKitFormSubmissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -69,4 +68,3 @@ webkit_form_submission_request_submit           (WebKitFormSubmissionRequest  *r
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitGeolocationPermissionRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitGeolocationPermissionRequest.h
>index d7c8a9dfeb1..cd62d14ccd7 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitGeolocationPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitGeolocationPermissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitGeolocationPermissionRequest_h
>-#define WebKitGeolocationPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -61,4 +60,3 @@ webkit_geolocation_permission_request_get_type (void);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitHitTestResult.h b/Source/WebKit/UIProcess/API/wpe/WebKitHitTestResult.h
>index 679aa0760e4..25c74093c09 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitHitTestResult.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitHitTestResult.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitHitTestResult_h
>-#define WebKitHitTestResult_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -119,4 +118,3 @@ webkit_hit_test_result_context_is_scrollbar (WebKitHitTestResult *hit_test_resul
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitInstallMissingMediaPluginsPermissionRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitInstallMissingMediaPluginsPermissionRequest.h
>index 51c2813a049..c60ea625a7f 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitInstallMissingMediaPluginsPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitInstallMissingMediaPluginsPermissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitInstallMissingMediaPluginsPermissionRequest_h
>-#define WebKitInstallMissingMediaPluginsPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -63,4 +62,3 @@ webkit_install_missing_media_plugins_permission_request_get_description (WebKitI
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitJavascriptResult.h b/Source/WebKit/UIProcess/API/wpe/WebKitJavascriptResult.h
>index 1fee2efd4ba..4b839ed9d48 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitJavascriptResult.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitJavascriptResult.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitJavascriptResult_h
>-#define WebKitJavascriptResult_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <jsc/jsc.h>
>@@ -49,4 +48,3 @@ webkit_javascript_result_get_js_value       (WebKitJavascriptResult *js_result);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitMimeInfo.h b/Source/WebKit/UIProcess/API/wpe/WebKitMimeInfo.h
>index 2fc3926c61e..5a8bde0095b 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitMimeInfo.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitMimeInfo.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitMimeInfo_h
>-#define WebKitMimeInfo_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -54,4 +53,3 @@ webkit_mime_info_get_extensions  (WebKitMimeInfo *info);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitNavigationAction.h b/Source/WebKit/UIProcess/API/wpe/WebKitNavigationAction.h
>index 0fdec1dc182..18da8b84cbc 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitNavigationAction.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitNavigationAction.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNavigationAction_h
>-#define WebKitNavigationAction_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -84,4 +83,3 @@ webkit_navigation_action_is_redirect         (WebKitNavigationAction *navigation
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitNavigationPolicyDecision.h b/Source/WebKit/UIProcess/API/wpe/WebKitNavigationPolicyDecision.h
>index 9311e540028..a66209221ab 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitNavigationPolicyDecision.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitNavigationPolicyDecision.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNavigationPolicyDecision_h
>-#define WebKitNavigationPolicyDecision_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -70,4 +69,3 @@ webkit_navigation_policy_decision_get_frame_name        (WebKitNavigationPolicyD
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitNetworkProxySettings.h b/Source/WebKit/UIProcess/API/wpe/WebKitNetworkProxySettings.h
>index cb5657c0e55..46753511dd4 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitNetworkProxySettings.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitNetworkProxySettings.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNetworkProxySettings_h
>-#define WebKitNetworkProxySettings_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -53,4 +52,3 @@ webkit_network_proxy_settings_add_proxy_for_scheme (WebKitNetworkProxySettings *
> 
> G_END_DECLS
> 
>-#endif /* WebKitNetworkProxySettings_h */
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitNotification.h b/Source/WebKit/UIProcess/API/wpe/WebKitNotification.h
>index bab986d845e..5ae744227b8 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitNotification.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitNotification.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNotification_h
>-#define WebKitNotification_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -80,4 +79,3 @@ webkit_notification_clicked                  (WebKitNotification *notification);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitNotificationPermissionRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitNotificationPermissionRequest.h
>index 6f6debb9371..c0297367243 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitNotificationPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitNotificationPermissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitNotificationPermissionRequest_h
>-#define WebKitNotificationPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -56,4 +55,3 @@ webkit_notification_permission_request_get_type (void);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitPermissionRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitPermissionRequest.h
>index 8ae7598e2ec..839a295a396 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitPermissionRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitPermissionRequest_h
>-#define WebKitPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -55,4 +54,3 @@ webkit_permission_request_deny     (WebKitPermissionRequest *request);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitPlugin.h b/Source/WebKit/UIProcess/API/wpe/WebKitPlugin.h
>index 15b68005b89..f68cefeb6d7 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitPlugin.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitPlugin.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitPlugin_h
>-#define WebKitPlugin_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -72,4 +71,3 @@ webkit_plugin_get_mime_info_list (WebKitPlugin *plugin);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitPolicyDecision.h b/Source/WebKit/UIProcess/API/wpe/WebKitPolicyDecision.h
>index bfffed1c74b..380ccb9eab3 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitPolicyDecision.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitPolicyDecision.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitPolicyDecision_h
>-#define WebKitPolicyDecision_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -70,4 +69,3 @@ webkit_policy_decision_download (WebKitPolicyDecision *decision);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitResponsePolicyDecision.h b/Source/WebKit/UIProcess/API/wpe/WebKitResponsePolicyDecision.h
>index defd0026a15..7c370b77371 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitResponsePolicyDecision.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitResponsePolicyDecision.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitResponsePolicyDecision_h
>-#define WebKitResponsePolicyDecision_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -73,4 +72,3 @@ webkit_response_policy_decision_is_mime_type_supported (WebKitResponsePolicyDeci
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitScriptDialog.h b/Source/WebKit/UIProcess/API/wpe/WebKitScriptDialog.h
>index f50dabe2633..7d9596d4902 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitScriptDialog.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitScriptDialog.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitScriptDialog_h
>-#define WebKitScriptDialog_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -75,4 +74,3 @@ webkit_script_dialog_prompt_set_text         (WebKitScriptDialog *dialog,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitSecurityManager.h b/Source/WebKit/UIProcess/API/wpe/WebKitSecurityManager.h
>index 982284db935..17e800afc6f 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitSecurityManager.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitSecurityManager.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitSecurityManager_h
>-#define WebKitSecurityManager_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -108,4 +107,3 @@ webkit_security_manager_uri_scheme_is_empty_document            (WebKitSecurityM
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitSecurityOrigin.h b/Source/WebKit/UIProcess/API/wpe/WebKitSecurityOrigin.h
>index 80e04523c7f..c9df9766b78 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitSecurityOrigin.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitSecurityOrigin.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitSecurityOrigin_h
>-#define WebKitSecurityOrigin_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -67,4 +66,3 @@ webkit_security_origin_to_string    (WebKitSecurityOrigin *origin);
> 
> G_END_DECLS
> 
>-#endif /* WebKitSecurityOrigin_h */
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitSettings.h b/Source/WebKit/UIProcess/API/wpe/WebKitSettings.h
>index 91b3d44ab95..ec9ab007508 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitSettings.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitSettings.h
>@@ -32,8 +32,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitSettings_h
>-#define WebKitSettings_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -430,4 +429,3 @@ webkit_settings_set_allow_universal_access_from_file_urls      (WebKitSettings *
> 
> G_END_DECLS
> 
>-#endif /* WebKitSettings_h */
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitURIRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitURIRequest.h
>index af9e319bc29..88b8268344c 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitURIRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitURIRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitURIRequest_h
>-#define WebKitURIRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <libsoup/soup.h>
>@@ -78,4 +77,3 @@ webkit_uri_request_get_http_headers (WebKitURIRequest *request);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitURIResponse.h b/Source/WebKit/UIProcess/API/wpe/WebKitURIResponse.h
>index 79b09ce48db..bde3d46f905 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitURIResponse.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitURIResponse.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitURIResponse_h
>-#define WebKitURIResponse_h
>+#pragma once
> 
> #include <gio/gio.h>
> #include <libsoup/soup.h>
>@@ -80,4 +79,3 @@ webkit_uri_response_get_http_headers       (WebKitURIResponse    *response);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitURISchemeRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitURISchemeRequest.h
>index 682ff64684e..0275a2e6732 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitURISchemeRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitURISchemeRequest.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitURISchemeRequest_h
>-#define WebKitURISchemeRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -84,4 +83,3 @@ webkit_uri_scheme_request_finish_error (WebKitURISchemeRequest *request,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitUserContent.h b/Source/WebKit/UIProcess/API/wpe/WebKitUserContent.h
>index e7b5aeebdba..f35c3e1238b 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitUserContent.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitUserContent.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitUserContent_h
>-#define WebKitUserContent_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -122,4 +121,3 @@ webkit_user_script_new           (const gchar                    *source,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitUserContentManager.h b/Source/WebKit/UIProcess/API/wpe/WebKitUserContentManager.h
>index 27a27c83a4f..fd06b450622 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitUserContentManager.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitUserContentManager.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitUserContentManager_h
>-#define WebKitUserContentManager_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -87,4 +86,3 @@ webkit_user_content_manager_remove_all_scripts      (WebKitUserContentManager *m
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitUserMediaPermissionRequest.h b/Source/WebKit/UIProcess/API/wpe/WebKitUserMediaPermissionRequest.h
>index be14d363798..266f91543dc 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitUserMediaPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitUserMediaPermissionRequest.h
>@@ -20,8 +20,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitUserMediaPermissionRequest_h
>-#define WebKitUserMediaPermissionRequest_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -66,4 +65,3 @@ webkit_user_media_permission_is_for_video_device (WebKitUserMediaPermissionReque
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitWebContext.h b/Source/WebKit/UIProcess/API/wpe/WebKitWebContext.h
>index 8cf646f4ede..b7118356653 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitWebContext.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitWebContext.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebContext_h
>-#define WebKitWebContext_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitAutomationSession.h>
>@@ -304,4 +303,3 @@ webkit_web_context_initialize_notification_permissions
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitWebResource.h b/Source/WebKit/UIProcess/API/wpe/WebKitWebResource.h
>index 320ac3a4263..e24a12a827e 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitWebResource.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitWebResource.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebResource_h
>-#define WebKitWebResource_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <gio/gio.h>
>@@ -80,4 +79,3 @@ webkit_web_resource_get_data_finish (WebKitWebResource  *resource,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitWebView.h b/Source/WebKit/UIProcess/API/wpe/WebKitWebView.h
>index 3c02f0d9073..6409063bc09 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitWebView.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitWebView.h
>@@ -25,8 +25,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebView_h
>-#define WebKitWebView_h
>+#pragma once
> 
> #include <wpe/WebKitAuthenticationRequest.h>
> #include <wpe/WebKitBackForwardList.h>
>@@ -485,4 +484,3 @@ webkit_web_view_restore_session_state                (WebKitWebView
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitWebViewBackend.h b/Source/WebKit/UIProcess/API/wpe/WebKitWebViewBackend.h
>index 6663964d5ab..ee216db4a13 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitWebViewBackend.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitWebViewBackend.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebViewBackend_h
>-#define WebKitWebViewBackend_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -46,4 +45,3 @@ webkit_web_view_backend_get_wpe_backend (WebKitWebViewBackend    *view_backend);
> 
> G_END_DECLS
> 
>-#endif /* WebKitWebViewBackend_h */
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitWebViewSessionState.h b/Source/WebKit/UIProcess/API/wpe/WebKitWebViewSessionState.h
>index 5355645a198..c510942733e 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitWebViewSessionState.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitWebViewSessionState.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebViewSessionState_h
>-#define WebKitWebViewSessionState_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -50,4 +49,3 @@ webkit_web_view_session_state_serialize (WebKitWebViewSessionState *state);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitWebsiteData.h b/Source/WebKit/UIProcess/API/wpe/WebKitWebsiteData.h
>index 6326419bb6f..f5b70d31b7c 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitWebsiteData.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitWebsiteData.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebsiteData_h
>-#define WebKitWebsiteData_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -86,4 +85,3 @@ webkit_website_data_get_size      (WebKitWebsiteData     *website_data,
> 
> G_END_DECLS
> 
>-#endif /* WebKitWebsiteData_h */
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitWebsiteDataManager.h b/Source/WebKit/UIProcess/API/wpe/WebKitWebsiteDataManager.h
>index ace1682520f..0573f321242 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitWebsiteDataManager.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitWebsiteDataManager.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebsiteDataManager_h
>-#define WebKitWebsiteDataManager_h
>+#pragma once
> 
> #include <gio/gio.h>
> #include <wpe/WebKitCookieManager.h>
>@@ -141,4 +140,3 @@ webkit_website_data_manager_clear_finish                               (WebKitWe
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/WebKitWindowProperties.h b/Source/WebKit/UIProcess/API/wpe/WebKitWindowProperties.h
>index 060d3105c2e..cd001769fdc 100644
>--- a/Source/WebKit/UIProcess/API/wpe/WebKitWindowProperties.h
>+++ b/Source/WebKit/UIProcess/API/wpe/WebKitWindowProperties.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWindowProperties_h
>-#define WebKitWindowProperties_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -82,4 +81,3 @@ webkit_window_properties_get_fullscreen          (WebKitWindowProperties *window
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/UIProcess/API/wpe/webkit.h b/Source/WebKit/UIProcess/API/wpe/webkit.h
>index 943ade2afa8..8292dfc746b 100644
>--- a/Source/WebKit/UIProcess/API/wpe/webkit.h
>+++ b/Source/WebKit/UIProcess/API/wpe/webkit.h
>@@ -22,8 +22,7 @@
> #error "Headers <wpe/webkit.h> and <wpe/webkit-web-extension.h> cannot be included together."
> #endif
> 
>-#ifndef __WEBKIT_H__
>-#define __WEBKIT_H__
>+#pragma once
> 
> #define __WEBKIT_H_INSIDE__
> 
>@@ -80,4 +79,3 @@
> 
> #undef __WEBKIT_H_INSIDE__
> 
>-#endif /* __WEBKIT_H__ */
>diff --git a/Source/WebKit/UIProcess/ApplicationStateTracker.h b/Source/WebKit/UIProcess/ApplicationStateTracker.h
>index 696e29031a5..503ab12f143 100644
>--- a/Source/WebKit/UIProcess/ApplicationStateTracker.h
>+++ b/Source/WebKit/UIProcess/ApplicationStateTracker.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ApplicationStateTracker_h
>-#define ApplicationStateTracker_h
>+#pragma once
> 
> #if PLATFORM(IOS)
> 
>@@ -72,4 +71,3 @@ private:
> 
> #endif
> 
>-#endif // ApplicationStateTracker_h
>diff --git a/Source/WebKit/UIProcess/Authentication/AuthenticationDecisionListener.h b/Source/WebKit/UIProcess/Authentication/AuthenticationDecisionListener.h
>index b5bd2b09aad..6632b78496f 100644
>--- a/Source/WebKit/UIProcess/Authentication/AuthenticationDecisionListener.h
>+++ b/Source/WebKit/UIProcess/Authentication/AuthenticationDecisionListener.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef AuthenticationDecisionListener_h
>-#define AuthenticationDecisionListener_h
>+#pragma once
> 
> #include "APIObject.h"
> 
>@@ -57,4 +56,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebAuthenticationDecisionListener_h
>diff --git a/Source/WebKit/UIProcess/Authentication/WebCredential.h b/Source/WebKit/UIProcess/Authentication/WebCredential.h
>index eaaa1f70c6d..33944d255d9 100644
>--- a/Source/WebKit/UIProcess/Authentication/WebCredential.h
>+++ b/Source/WebKit/UIProcess/Authentication/WebCredential.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebCredential_h
>-#define WebCredential_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "APIString.h"
>@@ -62,4 +61,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebCredential_h
>diff --git a/Source/WebKit/UIProcess/Authentication/WebProtectionSpace.h b/Source/WebKit/UIProcess/Authentication/WebProtectionSpace.h
>index 28beba6e8c0..acaa822d74b 100644
>--- a/Source/WebKit/UIProcess/Authentication/WebProtectionSpace.h
>+++ b/Source/WebKit/UIProcess/Authentication/WebProtectionSpace.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebProtectionSpace_h
>-#define WebProtectionSpace_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/ProtectionSpace.h>
>@@ -57,4 +56,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebProtectionSpace_h
>diff --git a/Source/WebKit/UIProcess/AutoCorrectionCallback.h b/Source/WebKit/UIProcess/AutoCorrectionCallback.h
>index fca183cdcc0..3da180419b4 100644
>--- a/Source/WebKit/UIProcess/AutoCorrectionCallback.h
>+++ b/Source/WebKit/UIProcess/AutoCorrectionCallback.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef AutoCorrectionCallback_h
>-#define AutoCorrectionCallback_h
>+#pragma once
> 
> #include "APIError.h"
> #include "GenericCallback.h"
>@@ -40,4 +39,3 @@ typedef GenericCallback<const String&, const String&, const String&> SelectionCo
> 
> } // namespace WebKit
> 
>-#endif // AutoCorrectionCallback_h
>diff --git a/Source/WebKit/UIProcess/BackingStore.h b/Source/WebKit/UIProcess/BackingStore.h
>index 14de1f424aa..eec8e27c2bd 100644
>--- a/Source/WebKit/UIProcess/BackingStore.h
>+++ b/Source/WebKit/UIProcess/BackingStore.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef BackingStore_h
>-#define BackingStore_h
>+#pragma once
> 
> #include <WebCore/IntRect.h>
> #include <wtf/Noncopyable.h>
>@@ -74,4 +73,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // BackingStore_h
>diff --git a/Source/WebKit/UIProcess/Cocoa/AutomationSessionClient.h b/Source/WebKit/UIProcess/Cocoa/AutomationSessionClient.h
>index b2b9d4490ab..63eb3ebe284 100644
>--- a/Source/WebKit/UIProcess/Cocoa/AutomationSessionClient.h
>+++ b/Source/WebKit/UIProcess/Cocoa/AutomationSessionClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef AutomationSessionClient_h
>-#define AutomationSessionClient_h
>+#pragma once
> 
> #import "WKFoundation.h"
> 
>@@ -91,4 +90,3 @@ private:
> 
> #endif
> 
>-#endif // AutomationSessionClient_h
>diff --git a/Source/WebKit/UIProcess/Cocoa/DiagnosticLoggingClient.h b/Source/WebKit/UIProcess/Cocoa/DiagnosticLoggingClient.h
>index 8b0937cf6d1..306106e370c 100644
>--- a/Source/WebKit/UIProcess/Cocoa/DiagnosticLoggingClient.h
>+++ b/Source/WebKit/UIProcess/Cocoa/DiagnosticLoggingClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef DiagnosticLoggingClient_h
>-#define DiagnosticLoggingClient_h
>+#pragma once
> 
> #import "WKFoundation.h"
> 
>@@ -68,5 +67,4 @@ private:
> 
> #endif // WK_API_ENABLED
> 
>-#endif // DiagnosticLoggingClient_h
> 
>diff --git a/Source/WebKit/UIProcess/Cocoa/FindClient.h b/Source/WebKit/UIProcess/Cocoa/FindClient.h
>index 6d46936236a..185382b3516 100644
>--- a/Source/WebKit/UIProcess/Cocoa/FindClient.h
>+++ b/Source/WebKit/UIProcess/Cocoa/FindClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef FindClient_h
>-#define FindClient_h
>+#pragma once
> 
> #import "WKFoundation.h"
> 
>@@ -65,4 +64,3 @@ private:
> 
> #endif // WK_API_ENABLED
> 
>-#endif // FindClient_h
>diff --git a/Source/WebKit/UIProcess/Cocoa/LayerRepresentation.h b/Source/WebKit/UIProcess/Cocoa/LayerRepresentation.h
>index 2b6f1e3fbc6..94d6e434ac4 100644
>--- a/Source/WebKit/UIProcess/Cocoa/LayerRepresentation.h
>+++ b/Source/WebKit/UIProcess/Cocoa/LayerRepresentation.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef LayerRepresentation_h
>-#define LayerRepresentation_h
>+#pragma once
> 
> #if PLATFORM(IOS)
> 
>@@ -46,4 +45,3 @@ inline CALayer *asLayer(LayerOrView *layer)
> 
> #endif
> 
>-#endif // LayerRepresentation_h
>diff --git a/Source/WebKit/UIProcess/Cocoa/SessionStateCoding.h b/Source/WebKit/UIProcess/Cocoa/SessionStateCoding.h
>index 98a3188caa6..79e9192c0f9 100644
>--- a/Source/WebKit/UIProcess/Cocoa/SessionStateCoding.h
>+++ b/Source/WebKit/UIProcess/Cocoa/SessionStateCoding.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef SessionStateCoding_h
>-#define SessionStateCoding_h
>+#pragma once
> 
> #import <wtf/RetainPtr.h>
> 
>@@ -38,4 +37,3 @@ bool decodeSessionState(NSData *, SessionState&);
> 
> }
> 
>-#endif // SessionStateCoding_h
>diff --git a/Source/WebKit/UIProcess/Cocoa/ViewGestureController.h b/Source/WebKit/UIProcess/Cocoa/ViewGestureController.h
>index a713a34f5f5..6fb4f15864d 100644
>--- a/Source/WebKit/UIProcess/Cocoa/ViewGestureController.h
>+++ b/Source/WebKit/UIProcess/Cocoa/ViewGestureController.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ViewGestureController_h
>-#define ViewGestureController_h
>+#pragma once
> 
> #include "MessageReceiver.h"
> #include "SameDocumentNavigationType.h"
>@@ -300,4 +299,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // ViewGestureController_h
>diff --git a/Source/WebKit/UIProcess/DefaultUndoController.h b/Source/WebKit/UIProcess/DefaultUndoController.h
>index 8002dc94cb2..2d2e99a0f9f 100644
>--- a/Source/WebKit/UIProcess/DefaultUndoController.h
>+++ b/Source/WebKit/UIProcess/DefaultUndoController.h
>@@ -19,8 +19,7 @@
>     Boston, MA 02110-1301, USA.
> */
> 
>-#ifndef DefaultUndoController_h
>-#define DefaultUndoController_h
>+#pragma once
> 
> #include "WebEditCommandProxy.h"
> #include "WebPageProxy.h"
>@@ -42,4 +41,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // DefaultUndoController_h
>diff --git a/Source/WebKit/UIProcess/Downloads/DownloadProxyMap.h b/Source/WebKit/UIProcess/Downloads/DownloadProxyMap.h
>index 8f89cd6ab29..7c3b6329ace 100644
>--- a/Source/WebKit/UIProcess/Downloads/DownloadProxyMap.h
>+++ b/Source/WebKit/UIProcess/Downloads/DownloadProxyMap.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef DownloadProxyMap_h
>-#define DownloadProxyMap_h
>+#pragma once
> 
> #include "DownloadID.h"
> #include <wtf/HashMap.h>
>@@ -61,4 +60,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // DownloadProxyMap_h
>diff --git a/Source/WebKit/UIProcess/DrawingAreaProxyImpl.h b/Source/WebKit/UIProcess/DrawingAreaProxyImpl.h
>index 96652252ea3..949d14152a2 100644
>--- a/Source/WebKit/UIProcess/DrawingAreaProxyImpl.h
>+++ b/Source/WebKit/UIProcess/DrawingAreaProxyImpl.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef DrawingAreaProxyImpl_h
>-#define DrawingAreaProxyImpl_h
>+#pragma once
> 
> #include "AcceleratedDrawingAreaProxy.h"
> #include "BackingStore.h"
>@@ -90,4 +89,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // DrawingAreaProxyImpl_h
>diff --git a/Source/WebKit/UIProcess/GeolocationPermissionRequestManagerProxy.h b/Source/WebKit/UIProcess/GeolocationPermissionRequestManagerProxy.h
>index 83050f2e7d6..c5961e019fb 100644
>--- a/Source/WebKit/UIProcess/GeolocationPermissionRequestManagerProxy.h
>+++ b/Source/WebKit/UIProcess/GeolocationPermissionRequestManagerProxy.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef GeolocationPermissionRequestManagerProxy_h
>-#define GeolocationPermissionRequestManagerProxy_h
>+#pragma once
> 
> #include "GeolocationPermissionRequestProxy.h"
> #include <wtf/HashMap.h>
>@@ -52,4 +51,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // GeolocationPermissionRequestManagerProxy_h
>diff --git a/Source/WebKit/UIProcess/LegacySessionStateCoding.h b/Source/WebKit/UIProcess/LegacySessionStateCoding.h
>index 2321a2ecd15..51a346213b6 100644
>--- a/Source/WebKit/UIProcess/LegacySessionStateCoding.h
>+++ b/Source/WebKit/UIProcess/LegacySessionStateCoding.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef LegacySessionStateCoding_h
>-#define LegacySessionStateCoding_h
>+#pragma once
> 
> #include <wtf/Forward.h>
> 
>@@ -42,4 +41,3 @@ bool decodeLegacySessionState(const uint8_t* data, size_t, SessionState&);
> 
> } // namespace WebKit
> 
>-#endif // LegacySessionStateCoding_h
>diff --git a/Source/WebKit/UIProcess/Network/NetworkProcessProxy.h b/Source/WebKit/UIProcess/Network/NetworkProcessProxy.h
>index c9dc792a9b5..f894694a2cd 100644
>--- a/Source/WebKit/UIProcess/Network/NetworkProcessProxy.h
>+++ b/Source/WebKit/UIProcess/Network/NetworkProcessProxy.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkProcessProxy_h
>-#define NetworkProcessProxy_h
>+#pragma once
> 
> #include "ChildProcessProxy.h"
> #if ENABLE(LEGACY_CUSTOM_PROTOCOL_MANAGER)
>@@ -179,4 +178,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // NetworkProcessProxy_h
>diff --git a/Source/WebKit/UIProcess/Notifications/WebNotification.h b/Source/WebKit/UIProcess/Notifications/WebNotification.h
>index 870b264540e..ea8519d79a2 100644
>--- a/Source/WebKit/UIProcess/Notifications/WebNotification.h
>+++ b/Source/WebKit/UIProcess/Notifications/WebNotification.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebNotification_h
>-#define WebNotification_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "APISecurityOrigin.h"
>@@ -76,4 +75,3 @@ inline bool isNotificationIDValid(uint64_t id)
> 
> } // namespace WebKit
> 
>-#endif // WebNotification_h
>diff --git a/Source/WebKit/UIProcess/Notifications/WebNotificationManagerProxy.h b/Source/WebKit/UIProcess/Notifications/WebNotificationManagerProxy.h
>index 542fbd9726e..a3b85627cf0 100644
>--- a/Source/WebKit/UIProcess/Notifications/WebNotificationManagerProxy.h
>+++ b/Source/WebKit/UIProcess/Notifications/WebNotificationManagerProxy.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebNotificationManagerProxy_h
>-#define WebNotificationManagerProxy_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "MessageReceiver.h"
>@@ -96,4 +95,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebNotificationManagerProxy_h
>diff --git a/Source/WebKit/UIProcess/Notifications/WebNotificationProvider.h b/Source/WebKit/UIProcess/Notifications/WebNotificationProvider.h
>index 64614dcc941..69591940469 100644
>--- a/Source/WebKit/UIProcess/Notifications/WebNotificationProvider.h
>+++ b/Source/WebKit/UIProcess/Notifications/WebNotificationProvider.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebNotificationProvider_h
>-#define WebNotificationProvider_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "APINotificationProvider.h"
>@@ -60,4 +59,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebNotificationProvider_h
>diff --git a/Source/WebKit/UIProcess/PageLoadState.h b/Source/WebKit/UIProcess/PageLoadState.h
>index e2afdfd8d54..51a971f2e1d 100644
>--- a/Source/WebKit/UIProcess/PageLoadState.h
>+++ b/Source/WebKit/UIProcess/PageLoadState.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PageLoadState_h
>-#define PageLoadState_h
>+#pragma once
> 
> #include "WebCertificateInfo.h"
> #include <wtf/text/WTFString.h>
>@@ -230,4 +229,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // PageLoadState_h
>diff --git a/Source/WebKit/UIProcess/Plugins/PlugInAutoStartProvider.h b/Source/WebKit/UIProcess/Plugins/PlugInAutoStartProvider.h
>index c8d710e5160..d6b085e7eed 100644
>--- a/Source/WebKit/UIProcess/Plugins/PlugInAutoStartProvider.h
>+++ b/Source/WebKit/UIProcess/Plugins/PlugInAutoStartProvider.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PlugInAutoStartProvider_h
>-#define PlugInAutoStartProvider_h
>+#pragma once
> 
> #include <pal/SessionID.h>
> #include <wtf/HashMap.h>
>@@ -80,4 +79,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif /* PlugInAutoStartProvider_h */
>diff --git a/Source/WebKit/UIProcess/Plugins/PluginProcessProxy.h b/Source/WebKit/UIProcess/Plugins/PluginProcessProxy.h
>index 2530ffe34b4..3e8a80ff915 100644
>--- a/Source/WebKit/UIProcess/Plugins/PluginProcessProxy.h
>+++ b/Source/WebKit/UIProcess/Plugins/PluginProcessProxy.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginProcessProxy_h
>-#define PluginProcessProxy_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -185,4 +184,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // PluginProcessProxy_h
>diff --git a/Source/WebKit/UIProcess/Plugins/gtk/PluginInfoCache.h b/Source/WebKit/UIProcess/Plugins/gtk/PluginInfoCache.h
>index 05ab1cfa15a..8a5b24e5832 100644
>--- a/Source/WebKit/UIProcess/Plugins/gtk/PluginInfoCache.h
>+++ b/Source/WebKit/UIProcess/Plugins/gtk/PluginInfoCache.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginInfoCache_h
>-#define PluginInfoCache_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -60,4 +59,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // PluginInfoCache_h
>diff --git a/Source/WebKit/UIProcess/ProcessAssertion.h b/Source/WebKit/UIProcess/ProcessAssertion.h
>index dc9afd80943..4c10f418163 100644
>--- a/Source/WebKit/UIProcess/ProcessAssertion.h
>+++ b/Source/WebKit/UIProcess/ProcessAssertion.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ProcessAssertion_h
>-#define ProcessAssertion_h
>+#pragma once
> 
> #include <wtf/Function.h>
> #include <wtf/ProcessID.h>
>@@ -103,4 +102,3 @@ private:
>     
> }
> 
>-#endif // ProcessAssertion_h
>diff --git a/Source/WebKit/UIProcess/ProcessThrottler.h b/Source/WebKit/UIProcess/ProcessThrottler.h
>index 7d90db6643f..838a3372e0b 100644
>--- a/Source/WebKit/UIProcess/ProcessThrottler.h
>+++ b/Source/WebKit/UIProcess/ProcessThrottler.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ProcessThrottler_h
>-#define ProcessThrottler_h
>+#pragma once
> 
> #include "ProcessAssertion.h"
> 
>@@ -91,4 +90,3 @@ inline ProcessThrottler::BackgroundActivityToken ProcessThrottler::backgroundAct
>     
> }
> 
>-#endif // ProcessThrottler_h
>diff --git a/Source/WebKit/UIProcess/ProcessThrottlerClient.h b/Source/WebKit/UIProcess/ProcessThrottlerClient.h
>index f8def87b680..2e727c0b335 100644
>--- a/Source/WebKit/UIProcess/ProcessThrottlerClient.h
>+++ b/Source/WebKit/UIProcess/ProcessThrottlerClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ProcessThrottlerClient_h
>-#define ProcessThrottlerClient_h
>+#pragma once
> 
> #include "ProcessAssertion.h"
> 
>@@ -43,5 +42,4 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // ProcessThrottlerClient_h
> 
>diff --git a/Source/WebKit/UIProcess/ResponsivenessTimer.h b/Source/WebKit/UIProcess/ResponsivenessTimer.h
>index 7dd7dbbf5b3..048b3b58db2 100644
>--- a/Source/WebKit/UIProcess/ResponsivenessTimer.h
>+++ b/Source/WebKit/UIProcess/ResponsivenessTimer.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ResponsivenessTimer_h
>-#define ResponsivenessTimer_h
>+#pragma once
> 
> #include <wtf/RunLoop.h>
> 
>@@ -67,5 +66,4 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // ResponsivenessTimer_h
> 
>diff --git a/Source/WebKit/UIProcess/UserContent/WebScriptMessageHandler.h b/Source/WebKit/UIProcess/UserContent/WebScriptMessageHandler.h
>index 9e012dc2752..f2ba2ad4ed9 100644
>--- a/Source/WebKit/UIProcess/UserContent/WebScriptMessageHandler.h
>+++ b/Source/WebKit/UIProcess/UserContent/WebScriptMessageHandler.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebScriptMessageHandler_h
>-#define WebScriptMessageHandler_h
>+#pragma once
> 
> #include "WebUserContentControllerDataTypes.h"
> #include <wtf/Identified.h>
>@@ -75,4 +74,3 @@ private:
> 
> } // namespace API
>     
>-#endif // WebScriptMessageHandler_h
>diff --git a/Source/WebKit/UIProcess/WebContextClient.h b/Source/WebKit/UIProcess/WebContextClient.h
>index 038f63a5c40..6de69ceba39 100644
>--- a/Source/WebKit/UIProcess/WebContextClient.h
>+++ b/Source/WebKit/UIProcess/WebContextClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebContextClient_h
>-#define WebContextClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "APIData.h"
>@@ -50,4 +49,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebContextClient_h
>diff --git a/Source/WebKit/UIProcess/WebContextConnectionClient.h b/Source/WebKit/UIProcess/WebContextConnectionClient.h
>index 23bddf0a6dc..c73bc946ad9 100644
>--- a/Source/WebKit/UIProcess/WebContextConnectionClient.h
>+++ b/Source/WebKit/UIProcess/WebContextConnectionClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebContextConnectionClient_h
>-#define WebContextConnectionClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "WKContext.h"
>@@ -47,4 +46,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebContextConnectionClient_h
>diff --git a/Source/WebKit/UIProcess/WebContextSupplement.h b/Source/WebKit/UIProcess/WebContextSupplement.h
>index 80ca3a533a1..e77c18d9095 100644
>--- a/Source/WebKit/UIProcess/WebContextSupplement.h
>+++ b/Source/WebKit/UIProcess/WebContextSupplement.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebContextSupplement_h
>-#define WebContextSupplement_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -75,4 +74,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebContextSupplement_h
>diff --git a/Source/WebKit/UIProcess/WebCookieManagerProxyClient.h b/Source/WebKit/UIProcess/WebCookieManagerProxyClient.h
>index 0346fd8e556..2161d10620f 100644
>--- a/Source/WebKit/UIProcess/WebCookieManagerProxyClient.h
>+++ b/Source/WebKit/UIProcess/WebCookieManagerProxyClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebCookieManagerProxyClient_h
>-#define WebCookieManagerProxyClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "WKCookieManager.h"
>@@ -47,4 +46,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebCookieManagerProxyClient_h
>diff --git a/Source/WebKit/UIProcess/WebGeolocationProvider.h b/Source/WebKit/UIProcess/WebGeolocationProvider.h
>index 41bbc6c3b82..be816a268a2 100644
>--- a/Source/WebKit/UIProcess/WebGeolocationProvider.h
>+++ b/Source/WebKit/UIProcess/WebGeolocationProvider.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebGeolocationProvider_h
>-#define WebGeolocationProvider_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "APIGeolocationProvider.h"
>@@ -52,4 +51,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebGeolocationProvider_h
>diff --git a/Source/WebKit/UIProcess/WebGrammarDetail.h b/Source/WebKit/UIProcess/WebGrammarDetail.h
>index c9b7553cd7b..9de53bc5483 100644
>--- a/Source/WebKit/UIProcess/WebGrammarDetail.h
>+++ b/Source/WebKit/UIProcess/WebGrammarDetail.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebGrammarDetail_h
>-#define WebGrammarDetail_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/TextCheckerClient.h>
>@@ -58,4 +57,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebGrammarDetail_h
>diff --git a/Source/WebKit/UIProcess/WebMediaSessionFocusManagerClient.h b/Source/WebKit/UIProcess/WebMediaSessionFocusManagerClient.h
>index ef69a669058..089998dfc2d 100644
>--- a/Source/WebKit/UIProcess/WebMediaSessionFocusManagerClient.h
>+++ b/Source/WebKit/UIProcess/WebMediaSessionFocusManagerClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebMediaSessionFocusManagerClient_h
>-#define WebMediaSessionFocusManagerClient_h
>+#pragma once
> 
> #if ENABLE(MEDIA_SESSION)
> 
>@@ -51,4 +50,3 @@ public:
> 
> #endif // ENABLE(MEDIA_SESSION)
> 
>-#endif // WebMediaSessionFocusManagerClient_h
>diff --git a/Source/WebKit/UIProcess/WebPageDiagnosticLoggingClient.h b/Source/WebKit/UIProcess/WebPageDiagnosticLoggingClient.h
>index baadc1527cf..e7e8e27ee4d 100644
>--- a/Source/WebKit/UIProcess/WebPageDiagnosticLoggingClient.h
>+++ b/Source/WebKit/UIProcess/WebPageDiagnosticLoggingClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebPageDiagnosticLoggingClient_h
>-#define WebPageDiagnosticLoggingClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "APIDiagnosticLoggingClient.h"
>@@ -56,4 +55,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebPageDiagnosticLoggingClient_h
>diff --git a/Source/WebKit/UIProcess/WebPageInjectedBundleClient.h b/Source/WebKit/UIProcess/WebPageInjectedBundleClient.h
>index 30c7f354c00..c0cbc8a0a73 100644
>--- a/Source/WebKit/UIProcess/WebPageInjectedBundleClient.h
>+++ b/Source/WebKit/UIProcess/WebPageInjectedBundleClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebPageInjectedBundleClient_h
>-#define WebPageInjectedBundleClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "WKPage.h"
>@@ -50,4 +49,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebPageInjectedBundleClient_h
>diff --git a/Source/WebKit/UIProcess/WebPopupMenuProxy.h b/Source/WebKit/UIProcess/WebPopupMenuProxy.h
>index 61dee2e4b66..d2cfdda28b7 100644
>--- a/Source/WebKit/UIProcess/WebPopupMenuProxy.h
>+++ b/Source/WebKit/UIProcess/WebPopupMenuProxy.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebPopupMenuProxy_h
>-#define WebPopupMenuProxy_h
>+#pragma once
> 
> #include <WebCore/WritingMode.h>
> #include <wtf/Forward.h>
>@@ -78,4 +77,3 @@ protected:
> 
> } // namespace WebKit
> 
>-#endif // WebPopupMenuProxy_h
>diff --git a/Source/WebKit/UIProcess/WebProcessLifetimeObserver.h b/Source/WebKit/UIProcess/WebProcessLifetimeObserver.h
>index 48f7a0e2a4f..c67476f9316 100644
>--- a/Source/WebKit/UIProcess/WebProcessLifetimeObserver.h
>+++ b/Source/WebKit/UIProcess/WebProcessLifetimeObserver.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebProcessLifetimeObserver_h
>-#define WebProcessLifetimeObserver_h
>+#pragma once
> 
> #include <wtf/HashCountedSet.h>
> #include <wtf/IteratorRange.h>
>@@ -63,4 +62,3 @@ private:
> 
> }
> 
>-#endif // WebProcessLifetimeObserver_h
>diff --git a/Source/WebKit/UIProcess/WebProcessLifetimeTracker.h b/Source/WebKit/UIProcess/WebProcessLifetimeTracker.h
>index fdc4def2833..9e6adc0bdbf 100644
>--- a/Source/WebKit/UIProcess/WebProcessLifetimeTracker.h
>+++ b/Source/WebKit/UIProcess/WebProcessLifetimeTracker.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebProcessLifetimeTracker_h
>-#define WebProcessLifetimeTracker_h
>+#pragma once
> 
> #include <wtf/HashSet.h>
> 
>@@ -59,4 +58,3 @@ private:
> 
> }
> 
>-#endif // WebProcessLifetimeTracker_h
>diff --git a/Source/WebKit/UIProcess/WebTextChecker.h b/Source/WebKit/UIProcess/WebTextChecker.h
>index 7c945c72627..44738ee1596 100644
>--- a/Source/WebKit/UIProcess/WebTextChecker.h
>+++ b/Source/WebKit/UIProcess/WebTextChecker.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebTextChecker_h
>-#define WebTextChecker_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "WKTextChecker.h"
>@@ -56,4 +55,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebTextChecker_h
>diff --git a/Source/WebKit/UIProcess/WebTextCheckerClient.h b/Source/WebKit/UIProcess/WebTextCheckerClient.h
>index 1fd4897dd4d..b9b2ec8ec7c 100644
>--- a/Source/WebKit/UIProcess/WebTextCheckerClient.h
>+++ b/Source/WebKit/UIProcess/WebTextCheckerClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebTextCheckerClient_h
>-#define WebTextCheckerClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "WKTextChecker.h"
>@@ -63,4 +62,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebTextCheckerClient_h
>diff --git a/Source/WebKit/UIProcess/WebViewportAttributes.h b/Source/WebKit/UIProcess/WebViewportAttributes.h
>index e3b16006c53..267cbf1bbe6 100644
>--- a/Source/WebKit/UIProcess/WebViewportAttributes.h
>+++ b/Source/WebKit/UIProcess/WebViewportAttributes.h
>@@ -23,8 +23,7 @@
>  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebViewportAttributes_h
>-#define WebViewportAttributes_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/ViewportArguments.h>
>@@ -50,4 +49,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebViewportAttributes_h
>diff --git a/Source/WebKit/UIProcess/gstreamer/InstallMissingMediaPluginsPermissionRequest.h b/Source/WebKit/UIProcess/gstreamer/InstallMissingMediaPluginsPermissionRequest.h
>index 5416014cbde..d86749a8c99 100644
>--- a/Source/WebKit/UIProcess/gstreamer/InstallMissingMediaPluginsPermissionRequest.h
>+++ b/Source/WebKit/UIProcess/gstreamer/InstallMissingMediaPluginsPermissionRequest.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InstallMissingMediaPluginsPermissionRequest_h
>-#define InstallMissingMediaPluginsPermissionRequest_h
>+#pragma once
> 
> #if ENABLE(VIDEO) && USE(GSTREAMER)
> #include <WebCore/GUniquePtrGStreamer.h>
>@@ -70,4 +69,3 @@ class InstallMissingMediaPluginsPermissionRequest;
> } // namespace WebKit
> 
> #endif // ENABLE(VIDEO) && USE(GSTREAMER)
>-#endif // InstallMissingMediaPluginsPermissionRequest_h
>diff --git a/Source/WebKit/UIProcess/gtk/InputMethodFilter.h b/Source/WebKit/UIProcess/gtk/InputMethodFilter.h
>index f6d66eb5ab5..631b4dd3a8b 100644
>--- a/Source/WebKit/UIProcess/gtk/InputMethodFilter.h
>+++ b/Source/WebKit/UIProcess/gtk/InputMethodFilter.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef InputMethodFilter_h
>-#define InputMethodFilter_h
>+#pragma once
> 
> #include <WebCore/IntPoint.h>
> #include <wtf/Function.h>
>@@ -124,4 +123,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InputMethodFilter_h
>diff --git a/Source/WebKit/UIProcess/gtk/KeyBindingTranslator.h b/Source/WebKit/UIProcess/gtk/KeyBindingTranslator.h
>index b2ded5de6c0..b7425b9e6cf 100644
>--- a/Source/WebKit/UIProcess/gtk/KeyBindingTranslator.h
>+++ b/Source/WebKit/UIProcess/gtk/KeyBindingTranslator.h
>@@ -16,8 +16,7 @@
>  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
>  */
> 
>-#ifndef KeyBindingTranslator_h
>-#define KeyBindingTranslator_h
>+#pragma once
> 
> #include <WebCore/GRefPtrGtk.h>
> #include <wtf/Vector.h>
>@@ -41,6 +40,5 @@ private:
> 
> } // namespace WebKit
> 
>-#endif
> 
> 
>diff --git a/Source/WebKit/UIProcess/gtk/WebColorPickerGtk.h b/Source/WebKit/UIProcess/gtk/WebColorPickerGtk.h
>index 0bb96a5dd1d..589f1f28056 100644
>--- a/Source/WebKit/UIProcess/gtk/WebColorPickerGtk.h
>+++ b/Source/WebKit/UIProcess/gtk/WebColorPickerGtk.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebColorPickerGtk_h
>-#define WebColorPickerGtk_h
>+#pragma once
> 
> #if ENABLE(INPUT_TYPE_COLOR)
> 
>@@ -70,4 +69,3 @@ private:
> } // namespace WebKit
> 
> #endif // ENABLE(INPUT_TYPE_COLOR)
>-#endif // WebColorPickerGtk_h
>diff --git a/Source/WebKit/UIProcess/gtk/WebPopupMenuProxyGtk.h b/Source/WebKit/UIProcess/gtk/WebPopupMenuProxyGtk.h
>index 252c3187451..81d2f249514 100644
>--- a/Source/WebKit/UIProcess/gtk/WebPopupMenuProxyGtk.h
>+++ b/Source/WebKit/UIProcess/gtk/WebPopupMenuProxyGtk.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebPopupMenuProxyGtk_h
>-#define WebPopupMenuProxyGtk_h
>+#pragma once
> 
> #include "WebPopupMenuProxy.h"
> #include <wtf/RunLoop.h>
>@@ -80,4 +79,3 @@ private:
> } // namespace WebKit
> 
> 
>-#endif // WebPopupMenuProxyGtk_h
>diff --git a/Source/WebKit/UIProcess/ios/SmartMagnificationController.h b/Source/WebKit/UIProcess/ios/SmartMagnificationController.h
>index 5754ab9fb62..d8a82e97a54 100644
>--- a/Source/WebKit/UIProcess/ios/SmartMagnificationController.h
>+++ b/Source/WebKit/UIProcess/ios/SmartMagnificationController.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef SmartMagnificationController_h
>-#define SmartMagnificationController_h
>+#pragma once
> 
> #if PLATFORM(IOS)
> 
>@@ -64,4 +63,3 @@ private:
> 
> #endif // PLATFORM(IOS)
> 
>-#endif // SmartMagnificationController_h
>diff --git a/Source/WebKit/UIProcess/mac/CorrectionPanel.h b/Source/WebKit/UIProcess/mac/CorrectionPanel.h
>index 4979ce39640..ef02da9d1ab 100644
>--- a/Source/WebKit/UIProcess/mac/CorrectionPanel.h
>+++ b/Source/WebKit/UIProcess/mac/CorrectionPanel.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef CorrectionPanel_h
>-#define CorrectionPanel_h
>+#pragma once
> 
> #import <WebCore/TextChecking.h>
> 
>@@ -62,4 +61,3 @@ private:
> 
> #endif // USE(AUTOCORRECTION_PANEL)
> 
>-#endif // CorrectionPanel_h
>diff --git a/Source/WebKit/UIProcess/mac/ServicesController.h b/Source/WebKit/UIProcess/mac/ServicesController.h
>index 67c60ee9ddb..f172827dd52 100644
>--- a/Source/WebKit/UIProcess/mac/ServicesController.h
>+++ b/Source/WebKit/UIProcess/mac/ServicesController.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ServicesController_h
>-#define ServicesController_h
>+#pragma once
> 
> #if ENABLE(SERVICE_CONTROLS)
> 
>@@ -63,4 +62,3 @@ private:
> } // namespace WebKit
> 
> #endif // ENABLE(SERVICE_CONTROLS)
>-#endif // ServicesController_h
>diff --git a/Source/WebKit/UIProcess/mac/ViewSnapshotStore.h b/Source/WebKit/UIProcess/mac/ViewSnapshotStore.h
>index 26a600bc1d7..e8d2af9bd9b 100644
>--- a/Source/WebKit/UIProcess/mac/ViewSnapshotStore.h
>+++ b/Source/WebKit/UIProcess/mac/ViewSnapshotStore.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ViewSnapshotStore_h
>-#define ViewSnapshotStore_h
>+#pragma once
> 
> #include <WebCore/Color.h>
> #include <WebCore/IntPoint.h>
>@@ -144,4 +143,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // ViewSnapshotStore_h
>diff --git a/Source/WebKit/UIProcess/mac/WKFullKeyboardAccessWatcher.h b/Source/WebKit/UIProcess/mac/WKFullKeyboardAccessWatcher.h
>index 1eb9a5e3d54..a2547062824 100644
>--- a/Source/WebKit/UIProcess/mac/WKFullKeyboardAccessWatcher.h
>+++ b/Source/WebKit/UIProcess/mac/WKFullKeyboardAccessWatcher.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WKFullKeyboardAccessWatcher_h
>-#define WKFullKeyboardAccessWatcher_h
>+#pragma once
> 
> #if PLATFORM(MAC)
> 
>@@ -39,4 +38,3 @@
> 
> #endif // PLATFORM(MAC)
> 
>-#endif // WKFullKeyboardAccessWatcher_h
>diff --git a/Source/WebKit/UIProcess/mac/WKImmediateActionController.h b/Source/WebKit/UIProcess/mac/WKImmediateActionController.h
>index f6bf65f0742..17d1d1318f5 100644
>--- a/Source/WebKit/UIProcess/mac/WKImmediateActionController.h
>+++ b/Source/WebKit/UIProcess/mac/WKImmediateActionController.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WKImmediateActionController_h
>-#define WKImmediateActionController_h
>+#pragma once
> 
> #if PLATFORM(MAC)
> 
>@@ -78,4 +77,3 @@ enum class ImmediateActionState {
> 
> #endif // PLATFORM(MAC)
> 
>-#endif // WKImmediateActionController_h
>diff --git a/Source/WebKit/UIProcess/mac/WKSharingServicePickerDelegate.h b/Source/WebKit/UIProcess/mac/WKSharingServicePickerDelegate.h
>index fc9766c80c6..8ee95420068 100644
>--- a/Source/WebKit/UIProcess/mac/WKSharingServicePickerDelegate.h
>+++ b/Source/WebKit/UIProcess/mac/WKSharingServicePickerDelegate.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WKSharingServicePickerDelegate_h
>-#define WKSharingServicePickerDelegate_h
>+#pragma once
> 
> #if ENABLE(SERVICE_CONTROLS)
> 
>@@ -52,4 +51,3 @@ class WebContextMenuProxyMac;
> @end
> 
> #endif // ENABLE(SERVICE_CONTROLS)
>-#endif // WKSharingServicePickerDelegate_h
>diff --git a/Source/WebKit/UIProcess/mac/WKTextFinderClient.h b/Source/WebKit/UIProcess/mac/WKTextFinderClient.h
>index eacc951977d..7de19af6d82 100644
>--- a/Source/WebKit/UIProcess/mac/WKTextFinderClient.h
>+++ b/Source/WebKit/UIProcess/mac/WKTextFinderClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WKTextFinderClient_h
>-#define WKTextFinderClient_h
>+#pragma once
> 
> #import <WebKit/WKFoundation.h>
> 
>@@ -45,4 +44,3 @@ class WebPageProxy;
> 
> #endif // PLATFORM(MAC)
> 
>-#endif // WKTextFinderClient_h
>diff --git a/Source/WebKit/UIProcess/mac/WKTextInputWindowController.h b/Source/WebKit/UIProcess/mac/WKTextInputWindowController.h
>index d28beaca22c..97646aa10cd 100644
>--- a/Source/WebKit/UIProcess/mac/WKTextInputWindowController.h
>+++ b/Source/WebKit/UIProcess/mac/WKTextInputWindowController.h
>@@ -23,8 +23,7 @@
>  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
>  */
> 
>-#ifndef WKTextInputWindowController_h
>-#define WKTextInputWindowController_h
>+#pragma once
> 
> #if USE(APPKIT)
> 
>@@ -46,4 +45,3 @@
> 
> #endif // USE(APPKIT)
> 
>-#endif // WKTextInputWindowController_h
>diff --git a/Source/WebKit/UIProcess/mac/WKViewLayoutStrategy.h b/Source/WebKit/UIProcess/mac/WKViewLayoutStrategy.h
>index 2df7e07db9e..40da6baea38 100644
>--- a/Source/WebKit/UIProcess/mac/WKViewLayoutStrategy.h
>+++ b/Source/WebKit/UIProcess/mac/WKViewLayoutStrategy.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WKViewLayoutStrategy_h
>-#define WKViewLayoutStrategy_h
>+#pragma once
> 
> #if PLATFORM(MAC)
> 
>@@ -67,4 +66,3 @@ class WebViewImpl;
> 
> #endif // PLATFORM(MAC)
> 
>-#endif // WKViewLayoutStrategy_h
>diff --git a/Source/WebKit/UIProcess/mac/WebColorPickerMac.h b/Source/WebKit/UIProcess/mac/WebColorPickerMac.h
>index c1732c44657..905e981e01d 100644
>--- a/Source/WebKit/UIProcess/mac/WebColorPickerMac.h
>+++ b/Source/WebKit/UIProcess/mac/WebColorPickerMac.h
>@@ -29,8 +29,7 @@
>  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebColorPickerMac_h
>-#define WebColorPickerMac_h
>+#pragma once
> 
> #if ENABLE(INPUT_TYPE_COLOR)
> 
>@@ -79,4 +78,3 @@ private:
> 
> #endif // USE(APPKIT)
> 
>-#endif // WebContextMenuProxyMac_h
>diff --git a/Source/WebKit/UIProcess/mac/WebPopupMenuProxyMac.h b/Source/WebKit/UIProcess/mac/WebPopupMenuProxyMac.h
>index 090e1498254..2975d81b30c 100644
>--- a/Source/WebKit/UIProcess/mac/WebPopupMenuProxyMac.h
>+++ b/Source/WebKit/UIProcess/mac/WebPopupMenuProxyMac.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebPopupMenuProxyMac_h
>-#define WebPopupMenuProxyMac_h
>+#pragma once
> 
> #if USE(APPKIT)
> 
>@@ -64,4 +63,3 @@ private:
> 
> #endif // USE(APPKIT)
> 
>-#endif // WebPopupMenuProxyMac_h
>diff --git a/Source/WebKit/WebProcess/Databases/WebDatabaseProvider.h b/Source/WebKit/WebProcess/Databases/WebDatabaseProvider.h
>index f9daaf11ac7..21e3004026d 100644
>--- a/Source/WebKit/WebProcess/Databases/WebDatabaseProvider.h
>+++ b/Source/WebKit/WebProcess/Databases/WebDatabaseProvider.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebDatabaseProvider_h
>-#define WebDatabaseProvider_h
>+#pragma once
> 
> #include <WebCore/DatabaseProvider.h>
> #include <WebCore/InProcessIDBServer.h>
>@@ -53,4 +52,3 @@ private:
> 
> }
> 
>-#endif // WebDatabaseProvider_h
>diff --git a/Source/WebKit/WebProcess/FullScreen/WebFullScreenManager.h b/Source/WebKit/WebProcess/FullScreen/WebFullScreenManager.h
>index cd9478037c4..e625ada8e1a 100644
>--- a/Source/WebKit/WebProcess/FullScreen/WebFullScreenManager.h
>+++ b/Source/WebKit/WebProcess/FullScreen/WebFullScreenManager.h
>@@ -22,8 +22,7 @@
>  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
>-#ifndef WebFullScreenManager_h
>-#define WebFullScreenManager_h
>+#pragma once
> 
> #if ENABLE(FULLSCREEN_API)
> 
>@@ -94,4 +93,3 @@ protected:
> 
> #endif // ENABLE(FULLSCREEN_API)
> 
>-#endif // WebFullScreenManager_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageContextMenuClient.h b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageContextMenuClient.h
>index 29794558aad..508afd47c47 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageContextMenuClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/APIInjectedBundlePageContextMenuClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIInjectedBundlePageContextMenuClient_h
>-#define APIInjectedBundlePageContextMenuClient_h
>+#pragma once
> 
> #if ENABLE(CONTEXT_MENUS)
> 
>@@ -60,4 +59,3 @@ public:
> } // namespace API
> 
> #endif // ENABLE(CONTEXT_MENUS)
>-#endif // APIInjectedBundlePageContextMenuClient_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundleAPICast.h b/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundleAPICast.h
>index a165038ebea..22e00062925 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundleAPICast.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundleAPICast.h
>@@ -23,7 +23,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKBundleAPICast_h
>+#define WKBundleAPICast_h
> 
> #include "WKSharedAPICast.h"
> #include "WKBundlePage.h"
>@@ -97,3 +98,5 @@ inline WKAffinityType toAPI(WebCore::EAffinity affinity)
> }
> 
> } // namespace WebKit
>+
>+#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageOverlay.cpp b/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageOverlay.cpp
>index 3c07d2e0781..df9286f41c8 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageOverlay.cpp
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageOverlay.cpp
>@@ -36,10 +36,10 @@
> #include "WKSharedAPICast.h"
> #include "WKStringPrivate.h"
> #include "WebPage.h"
>+#include "WebPageOverlay.h"
> #include <WebCore/GraphicsContext.h>
> #include <WebCore/PageOverlay.h>
> #include <WebCore/PlatformMouseEvent.h>
>-#include <WebKit/WebPageOverlay.h>
> 
> namespace API {
> 
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageUIClient.h b/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageUIClient.h
>index f566bbd6ad1..c97971dc647 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageUIClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/c/WKBundlePageUIClient.h
>@@ -23,7 +23,8 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#pragma once
>+#ifndef WKBundlePageUIClient_h
>+#define WKBundlePageUIClient_h
> 
> #include <WebKit/WKBase.h>
> #include <WebKit/WKEvent.h>
>@@ -210,3 +211,5 @@ typedef struct WKBundlePageUIClientV4 {
>     // Version 4.
>     WKBundlePageDidResignInputElementStrongPasswordAppearance           didResignInputElementStrongPasswordAppearance;
> } WKBundlePageUIClientV4;
>+
>+#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitConsoleMessagePrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitConsoleMessagePrivate.h
>index edd79668f3f..6bbe204ced0 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitConsoleMessagePrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitConsoleMessagePrivate.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitConsoleMessagePrivate_h
>-#define WebKitConsoleMessagePrivate_h
>+#pragma once
> 
> #include "WebKitConsoleMessage.h"
> #include <JavaScriptCore/ConsoleTypes.h>
>@@ -51,4 +50,3 @@ struct _WebKitConsoleMessage {
>     CString sourceID;
> };
> 
>-#endif // WebKitConsoleMessagePrivate_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitFramePrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitFramePrivate.h
>index 81bc8ac406f..393d9eaec0a 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitFramePrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitFramePrivate.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitFramePrivate_h
>-#define WebKitFramePrivate_h
>+#pragma once
> 
> #include "WebFrame.h"
> #include "WebKitFrame.h"
>@@ -26,4 +25,3 @@
> WebKitFrame* webkitFrameCreate(WebKit::WebFrame*);
> WebKit::WebFrame* webkitFrameGetWebFrame(WebKitFrame*);
> 
>-#endif // WebKitFramePrivate_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitScriptWorldPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitScriptWorldPrivate.h
>index 3f3c3ff59b7..dad9b103dee 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitScriptWorldPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitScriptWorldPrivate.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitScriptWorldPrivate_h
>-#define WebKitScriptWorldPrivate_h
>+#pragma once
> 
> #include "InjectedBundleScriptWorld.h"
> #include "WebKitFrame.h"
>@@ -29,4 +28,3 @@ WebKitScriptWorld* webkitScriptWorldGet(WebKit::InjectedBundleScriptWorld*);
> void webkitScriptWorldWindowObjectCleared(WebKitScriptWorld*, WebKitWebPage*, WebKitFrame*);
> WebKit::InjectedBundleScriptWorld* webkitScriptWorldGetInjectedBundleScriptWorld(WebKitScriptWorld*);
> 
>-#endif // WebKitScriptWorldPrivate_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebEditorPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebEditorPrivate.h
>index 88159eb2080..31be1bf7418 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebEditorPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebEditorPrivate.h
>@@ -17,12 +17,10 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitWebEditorPrivate_h
>-#define WebKitWebEditorPrivate_h
>+#pragma once
> 
> #include "WebKitWebEditor.h"
> #include "WebKitWebPage.h"
> 
> WebKitWebEditor* webkitWebEditorCreate(WebKitWebPage*);
> 
>-#endif // WebKitWebEditor_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebHitTestResultPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebHitTestResultPrivate.h
>index 66dd7e7ec5b..90112a9f945 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebHitTestResultPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebHitTestResultPrivate.h
>@@ -17,12 +17,10 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitWebHitTestResultPrivate_h
>-#define WebKitWebHitTestResultPrivate_h
>+#pragma once
> 
> #include "WebKitWebHitTestResult.h"
> #include <WebCore/HitTestResult.h>
> 
> WebKitWebHitTestResult* webkitWebHitTestResultCreate(const WebCore::HitTestResult&);
> 
>-#endif // WebKitWebHitTestResultPrivate_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebPagePrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebPagePrivate.h
>index 8dcd42a9dbc..77e50ecb7cd 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebPagePrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/glib/WebKitWebPagePrivate.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitWebPagePrivate_h
>-#define WebKitWebPagePrivate_h
>+#pragma once
> 
> #include "APIDictionary.h"
> #include "WebKitWebPage.h"
>@@ -28,4 +27,3 @@ WebKitWebPage* webkitWebPageCreate(WebKit::WebPage*);
> void webkitWebPageDidReceiveMessage(WebKitWebPage*, const String& messageName, API::Dictionary& message);
> WebKit::WebPage* webkitWebPageGetPage(WebKitWebPage*);
> 
>-#endif // WebKitWebPagePrivate_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/ConvertToUTF8String.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/ConvertToUTF8String.h
>index e494113a3f8..97d846f953c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/ConvertToUTF8String.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/ConvertToUTF8String.h
>@@ -18,8 +18,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef ConvertToUTF8String_h
>-#define ConvertToUTF8String_h
>+#pragma once
> 
> #include <wtf/Forward.h>
> 
>@@ -32,4 +31,3 @@ typedef char gchar;
> gchar* convertToUTF8String(WTF::String const& s);
> gchar* convertToUTF8String(WebCore::URL const& s);
> 
>-#endif /* ConvertToUTF8String_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMAttr.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMAttr.h
>index 71c4a11110f..972624d744e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMAttr.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMAttr.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMAttr_h
>-#define WebKitDOMAttr_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMNode.h>
>@@ -145,4 +144,3 @@ webkit_dom_attr_get_local_name(WebKitDOMAttr* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMAttr_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMAttrPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMAttrPrivate.h
>index 9fbc83fc18f..d0506b28492 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMAttrPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMAttrPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMAttrPrivate_h
>-#define WebKitDOMAttrPrivate_h
>+#pragma once
> 
> #include <WebCore/Attr.h>
> #include <webkitdom/WebKitDOMAttr.h>
>@@ -29,4 +28,3 @@ WebKitDOMAttr* kit(WebCore::Attr*);
> WebCore::Attr* core(WebKitDOMAttr*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMAttrPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMBlob.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMBlob.h
>index a3fb77ec979..b9461f29a33 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMBlob.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMBlob.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMBlob_h
>-#define WebKitDOMBlob_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -61,4 +60,3 @@ webkit_dom_blob_get_size(WebKitDOMBlob* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMBlob_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMBlobPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMBlobPrivate.h
>index 1ae3a7cb162..186754bed41 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMBlobPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMBlobPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMBlobPrivate_h
>-#define WebKitDOMBlobPrivate_h
>+#pragma once
> 
> #include <WebCore/Blob.h>
> #include <webkitdom/WebKitDOMBlob.h>
>@@ -29,4 +28,3 @@ WebKitDOMBlob* kit(WebCore::Blob*);
> WebCore::Blob* core(WebKitDOMBlob*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMBlobPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCDATASection.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCDATASection.h
>index 10468f88d98..a2670a273ac 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCDATASection.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCDATASection.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMCDATASection_h
>-#define WebKitDOMCDATASection_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMText.h>
>@@ -50,4 +49,3 @@ webkit_dom_cdata_section_get_type(void);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMCDATASection_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCDATASectionPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCDATASectionPrivate.h
>index d7b9672ca54..1c40fa35f44 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCDATASectionPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCDATASectionPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMCDATASectionPrivate_h
>-#define WebKitDOMCDATASectionPrivate_h
>+#pragma once
> 
> #include <WebCore/CDATASection.h>
> #include <webkitdom/WebKitDOMCDATASection.h>
>@@ -29,4 +28,3 @@ WebKitDOMCDATASection* kit(WebCore::CDATASection*);
> WebCore::CDATASection* core(WebKitDOMCDATASection*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMCDATASectionPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRule.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRule.h
>index 59b580a7f61..915d2b6df1e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRule.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRule.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMCSSRule_h
>-#define WebKitDOMCSSRule_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -159,4 +158,3 @@ webkit_dom_css_rule_get_parent_rule(WebKitDOMCSSRule* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMCSSRule_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRuleList.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRuleList.h
>index d9a4da5b8e6..2f9c01a0b93 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRuleList.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRuleList.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMCSSRuleList_h
>-#define WebKitDOMCSSRuleList_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -73,4 +72,3 @@ webkit_dom_css_rule_list_get_length(WebKitDOMCSSRuleList* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMCSSRuleList_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRuleListPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRuleListPrivate.h
>index f02d3bad7f1..03a88bb85d1 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRuleListPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRuleListPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMCSSRuleListPrivate_h
>-#define WebKitDOMCSSRuleListPrivate_h
>+#pragma once
> 
> #include <WebCore/CSSRuleList.h>
> #include <webkitdom/WebKitDOMCSSRuleList.h>
>@@ -29,4 +28,3 @@ WebKitDOMCSSRuleList* kit(WebCore::CSSRuleList*);
> WebCore::CSSRuleList* core(WebKitDOMCSSRuleList*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMCSSRuleListPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRulePrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRulePrivate.h
>index 7c6d7fd3eb8..68756036651 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRulePrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSRulePrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMCSSRulePrivate_h
>-#define WebKitDOMCSSRulePrivate_h
>+#pragma once
> 
> #include <WebCore/CSSRule.h>
> #include <webkitdom/WebKitDOMCSSRule.h>
>@@ -29,4 +28,3 @@ WebKitDOMCSSRule* kit(WebCore::CSSRule*);
> WebCore::CSSRule* core(WebKitDOMCSSRule*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMCSSRulePrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleDeclaration.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleDeclaration.h
>index 735fc308f32..d76927456f5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleDeclaration.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleDeclaration.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMCSSStyleDeclaration_h
>-#define WebKitDOMCSSStyleDeclaration_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -182,4 +181,3 @@ webkit_dom_css_style_declaration_get_parent_rule(WebKitDOMCSSStyleDeclaration* s
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMCSSStyleDeclaration_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleDeclarationPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleDeclarationPrivate.h
>index e98646f773f..f945c0e766b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleDeclarationPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleDeclarationPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMCSSStyleDeclarationPrivate_h
>-#define WebKitDOMCSSStyleDeclarationPrivate_h
>+#pragma once
> 
> #include <WebCore/CSSStyleDeclaration.h>
> #include <webkitdom/WebKitDOMCSSStyleDeclaration.h>
>@@ -29,4 +28,3 @@ WebKitDOMCSSStyleDeclaration* kit(WebCore::CSSStyleDeclaration*);
> WebCore::CSSStyleDeclaration* core(WebKitDOMCSSStyleDeclaration*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMCSSStyleDeclarationPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleSheet.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleSheet.h
>index a04e04fa180..e05c0cb766b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleSheet.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleSheet.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMCSSStyleSheet_h
>-#define WebKitDOMCSSStyleSheet_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMStyleSheet.h>
>@@ -136,4 +135,3 @@ webkit_dom_css_style_sheet_get_rules(WebKitDOMCSSStyleSheet* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMCSSStyleSheet_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleSheetPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleSheetPrivate.h
>index de64d0b2880..256a8aef11d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleSheetPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSStyleSheetPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMCSSStyleSheetPrivate_h
>-#define WebKitDOMCSSStyleSheetPrivate_h
>+#pragma once
> 
> #include <WebCore/CSSStyleSheet.h>
> #include <webkitdom/WebKitDOMCSSStyleSheet.h>
>@@ -29,4 +28,3 @@ WebKitDOMCSSStyleSheet* kit(WebCore::CSSStyleSheet*);
> WebCore::CSSStyleSheet* core(WebKitDOMCSSStyleSheet*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMCSSStyleSheetPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSValue.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSValue.h
>index 26554aed03c..6b44f5454be 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSValue.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSValue.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMCSSValue_h
>-#define WebKitDOMCSSValue_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -116,4 +115,3 @@ webkit_dom_css_value_get_css_value_type(WebKitDOMCSSValue* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMCSSValue_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSValuePrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSValuePrivate.h
>index fb2eefbc3d7..e0e82e0ddbe 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSValuePrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCSSValuePrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMCSSValuePrivate_h
>-#define WebKitDOMCSSValuePrivate_h
>+#pragma once
> 
> #include <WebCore/DeprecatedCSSOMValue.h>
> #include <webkitdom/WebKitDOMCSSValue.h>
>@@ -29,4 +28,3 @@ WebKitDOMCSSValue* kit(WebCore::DeprecatedCSSOMValue*);
> WebCore::DeprecatedCSSOMValue* core(WebKitDOMCSSValue*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMCSSValuePrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCharacterData.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCharacterData.h
>index b4f980f076a..5f05b3c5d19 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCharacterData.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCharacterData.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMCharacterData_h
>-#define WebKitDOMCharacterData_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMNode.h>
>@@ -150,4 +149,3 @@ webkit_dom_character_data_get_length(WebKitDOMCharacterData* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMCharacterData_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCharacterDataPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCharacterDataPrivate.h
>index cd39a77768d..946134013c4 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCharacterDataPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCharacterDataPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMCharacterDataPrivate_h
>-#define WebKitDOMCharacterDataPrivate_h
>+#pragma once
> 
> #include <WebCore/CharacterData.h>
> #include <webkitdom/WebKitDOMCharacterData.h>
>@@ -29,4 +28,3 @@ WebKitDOMCharacterData* kit(WebCore::CharacterData*);
> WebCore::CharacterData* core(WebKitDOMCharacterData*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMCharacterDataPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMClientRect.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMClientRect.h
>index b491d22aa82..5d1b377e8f5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMClientRect.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMClientRect.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMClientRect_h
>-#define WebKitDOMClientRect_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -140,4 +139,3 @@ webkit_dom_client_rect_get_height(WebKitDOMClientRect* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMClientRect_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMClientRectList.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMClientRectList.h
>index 2d9c05ff8b2..63b7471cd14 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMClientRectList.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMClientRectList.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMClientRectList_h
>-#define WebKitDOMClientRectList_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -80,4 +79,3 @@ WEBKIT_DEPRECATED WebKitDOMClientRect* webkit_dom_client_rect_list_item(WebKitDO
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMClientRectList_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMComment.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMComment.h
>index fc73ab00bc1..f0258e6bbfa 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMComment.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMComment.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMComment_h
>-#define WebKitDOMComment_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMCharacterData.h>
>@@ -50,4 +49,3 @@ webkit_dom_comment_get_type(void);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMComment_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCommentPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCommentPrivate.h
>index 5e7a31ebd44..0937e22ebc0 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCommentPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCommentPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMCommentPrivate_h
>-#define WebKitDOMCommentPrivate_h
>+#pragma once
> 
> #include <WebCore/Comment.h>
> #include <webkitdom/WebKitDOMComment.h>
>@@ -29,4 +28,3 @@ WebKitDOMComment* kit(WebCore::Comment*);
> WebCore::Comment* core(WebKitDOMComment*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMCommentPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCustomUnstable.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCustomUnstable.h
>index 69ff206d5ed..d845d259e15 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCustomUnstable.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMCustomUnstable.h
>@@ -16,8 +16,7 @@
>  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
>  */
> 
>-#ifndef WebKitDOMCustomUnstable_h
>-#define WebKitDOMCustomUnstable_h
>+#pragma once
> 
> #ifdef WEBKIT_DOM_USE_UNSTABLE_API
> #define __WEBKITDOM_H_INSIDE__
>@@ -25,4 +24,3 @@
> #undef __WEBKITDOM_H_INSIDE__
> #endif /* WEBKIT_DOM_USE_UNSTABLE_API */
> 
>-#endif /* WebKitDOMCustomUnstable_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMImplementation.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMImplementation.h
>index 2ec042fd8f6..79a55e1c4bb 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMImplementation.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMImplementation.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMDOMImplementation_h
>-#define WebKitDOMDOMImplementation_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -119,4 +118,3 @@ webkit_dom_dom_implementation_create_html_document(WebKitDOMDOMImplementation* s
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMDOMImplementation_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMImplementationPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMImplementationPrivate.h
>index a4195a5d4b2..5093038a116 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMImplementationPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMImplementationPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMDOMImplementationPrivate_h
>-#define WebKitDOMDOMImplementationPrivate_h
>+#pragma once
> 
> #include <WebCore/DOMImplementation.h>
> #include <webkitdom/WebKitDOMDOMImplementation.h>
>@@ -29,4 +28,3 @@ WebKitDOMDOMImplementation* kit(WebCore::DOMImplementation*);
> WebCore::DOMImplementation* core(WebKitDOMDOMImplementation*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMDOMImplementationPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMSelection.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMSelection.h
>index 9ca07efa316..adc08064b9c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMSelection.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMSelection.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMDOMSelection_h
>-#define WebKitDOMDOMSelection_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -373,4 +372,3 @@ webkit_dom_dom_selection_get_extent_offset(WebKitDOMDOMSelection* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMDOMSelection_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMSelectionPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMSelectionPrivate.h
>index 415e27eb497..dddae1d6d32 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMSelectionPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMSelectionPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMDOMSelectionPrivate_h
>-#define WebKitDOMDOMSelectionPrivate_h
>+#pragma once
> 
> #include <WebCore/DOMSelection.h>
> #include <webkitdom/WebKitDOMDOMSelection.h>
>@@ -29,4 +28,3 @@ WebKitDOMDOMSelection* kit(WebCore::DOMSelection*);
> WebCore::DOMSelection* core(WebKitDOMDOMSelection*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMDOMSelectionPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMTokenList.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMTokenList.h
>index 603db71a799..3971cd8b12e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMTokenList.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMTokenList.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMDOMTokenList_h
>-#define WebKitDOMDOMTokenList_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -172,4 +171,3 @@ webkit_dom_dom_token_list_set_value(WebKitDOMDOMTokenList* self, const gchar* va
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMDOMTokenList_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMTokenListPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMTokenListPrivate.h
>index 7ebe821c2c9..49ea9e23b74 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMTokenListPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMTokenListPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMDOMTokenListPrivate_h
>-#define WebKitDOMDOMTokenListPrivate_h
>+#pragma once
> 
> #include <WebCore/DOMTokenList.h>
> #include <webkitdom/WebKitDOMDOMTokenList.h>
>@@ -29,4 +28,3 @@ WebKitDOMDOMTokenList* kit(WebCore::DOMTokenList*);
> WebCore::DOMTokenList* core(WebKitDOMDOMTokenList*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMDOMTokenListPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindow.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindow.h
>index c0f54b8ec33..b6dd1d54ee1 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindow.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindow.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMDOMWindow_h
>-#define WebKitDOMDOMWindow_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -709,4 +708,3 @@ webkit_dom_dom_window_webkit_message_handlers_post_message(WebKitDOMDOMWindow* w
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMDOMWindow_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindowPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindowPrivate.h
>index 6684ec6788e..7fdb7a0eee3 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindowPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindowPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMDOMWindowPrivate_h
>-#define WebKitDOMDOMWindowPrivate_h
>+#pragma once
> 
> #include <WebCore/DOMWindow.h>
> #include <WebCore/WindowProxy.h>
>@@ -32,4 +31,3 @@ WebCore::DOMWindow* core(WebKitDOMDOMWindow*);
> WebCore::WindowProxy* toWindowProxy(WebKitDOMDOMWindow*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMDOMWindowPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindowUnstable.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindowUnstable.h
>index 35cb62e6bbc..3ebe9d392f8 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindowUnstable.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDOMWindowUnstable.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMDOMWindowUnstable_h
>-#define WebKitDOMDOMWindowUnstable_h
>+#pragma once
> 
> #ifdef WEBKIT_DOM_USE_UNSTABLE_API
> #define __WEBKITDOM_H_INSIDE__
>@@ -26,4 +25,3 @@
> #undef __WEBKITDOM_H_INSIDE__
> #endif /* WEBKIT_DOM_USE_UNSTABLE_API */
> 
>-#endif /* WebKitDOMDOMWindowUnstable_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDeprecated.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDeprecated.h
>index c5bb19d0a6e..20f96162f92 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDeprecated.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDeprecated.h
>@@ -16,8 +16,7 @@
>  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
>  */
> 
>-#ifndef WebKitDOMDeprecated_h
>-#define WebKitDOMDeprecated_h
>+#pragma once
> 
> #if !defined(WEBKIT_DISABLE_DEPRECATED)
> 
>@@ -487,4 +486,3 @@ G_END_DECLS
> 
> #endif /* WEBKIT_DISABLE_DEPRECATED */
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocument.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocument.h
>index 669a6a16780..b92be5c629d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocument.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocument.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMDocument_h
>-#define WebKitDOMDocument_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMNode.h>
>@@ -1277,4 +1276,3 @@ webkit_dom_document_get_child_element_count(WebKitDOMDocument* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMDocument_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragment.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragment.h
>index 0976692f34d..2409cdd4096 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragment.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragment.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMDocumentFragment_h
>-#define WebKitDOMDocumentFragment_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMNode.h>
>@@ -146,4 +145,3 @@ webkit_dom_document_fragment_get_child_element_count(WebKitDOMDocumentFragment*
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMDocumentFragment_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragmentPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragmentPrivate.h
>index 097be7e8fc6..04423eb115e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragmentPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragmentPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMDocumentFragmentPrivate_h
>-#define WebKitDOMDocumentFragmentPrivate_h
>+#pragma once
> 
> #include <WebCore/DocumentFragment.h>
> #include <webkitdom/WebKitDOMDocumentFragment.h>
>@@ -29,4 +28,3 @@ WebKitDOMDocumentFragment* kit(WebCore::DocumentFragment*);
> WebCore::DocumentFragment* core(WebKitDOMDocumentFragment*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMDocumentFragmentPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragmentUnstable.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragmentUnstable.h
>index 3c3e740f6e0..d7a0d31900b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragmentUnstable.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentFragmentUnstable.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMDocumentFragmentUnstable_h
>-#define WebKitDOMDocumentFragmentUnstable_h
>+#pragma once
> 
> #ifdef WEBKIT_DOM_USE_UNSTABLE_API
> #define __WEBKITDOM_H_INSIDE__
>@@ -26,4 +25,3 @@
> #undef __WEBKITDOM_H_INSIDE__
> #endif /* WEBKIT_DOM_USE_UNSTABLE_API */
> 
>-#endif /* WebKitDOMDocumentFragmentUnstable_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentType.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentType.h
>index 39b512225f8..a12d6a3294e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentType.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentType.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMDocumentType_h
>-#define WebKitDOMDocumentType_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMNode.h>
>@@ -116,4 +115,3 @@ webkit_dom_document_type_get_system_id(WebKitDOMDocumentType* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMDocumentType_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentTypePrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentTypePrivate.h
>index a86cec5529a..ba2e06b4557 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentTypePrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentTypePrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMDocumentTypePrivate_h
>-#define WebKitDOMDocumentTypePrivate_h
>+#pragma once
> 
> #include <WebCore/DocumentType.h>
> #include <webkitdom/WebKitDOMDocumentType.h>
>@@ -29,4 +28,3 @@ WebKitDOMDocumentType* kit(WebCore::DocumentType*);
> WebCore::DocumentType* core(WebKitDOMDocumentType*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMDocumentTypePrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentUnstable.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentUnstable.h
>index f771a12f804..062a0b73f78 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentUnstable.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMDocumentUnstable.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMDocumentUnstable_h
>-#define WebKitDOMDocumentUnstable_h
>+#pragma once
> 
> #ifdef WEBKIT_DOM_USE_UNSTABLE_API
> #define __WEBKITDOM_H_INSIDE__
>@@ -26,4 +25,3 @@
> #undef __WEBKITDOM_H_INSIDE__
> #endif /* WEBKIT_DOM_USE_UNSTABLE_API */
> 
>-#endif /* WebKitDOMDocumentUnstable_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMElement.h
>index 02263c489c4..951edfa6168 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMElement_h
>-#define WebKitDOMElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMNode.h>
>@@ -951,4 +950,3 @@ webkit_dom_element_get_class_list(WebKitDOMElement* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMElementUnstable.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMElementUnstable.h
>index 04eba922762..300e848eb3d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMElementUnstable.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMElementUnstable.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMElementUnstable_h
>-#define WebKitDOMElementUnstable_h
>+#pragma once
> 
> #ifdef WEBKIT_DOM_USE_UNSTABLE_API
> #define __WEBKITDOM_H_INSIDE__
>@@ -26,4 +25,3 @@
> #undef __WEBKITDOM_H_INSIDE__
> #endif /* WEBKIT_DOM_USE_UNSTABLE_API */
> 
>-#endif /* WebKitDOMElementUnstable_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEvent.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEvent.h
>index e3630e1834d..175c1b7af9f 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEvent.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEvent.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMEvent_h
>-#define WebKitDOMEvent_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -359,4 +358,3 @@ webkit_dom_event_set_cancel_bubble(WebKitDOMEvent* self, gboolean value);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMEvent_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventPrivate.h
>index b0908622d31..54d48dcb2da 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMEventPrivate_h
>-#define WebKitDOMEventPrivate_h
>+#pragma once
> 
> #include <WebCore/Event.h>
> #include <webkitdom/WebKitDOMEvent.h>
>@@ -29,4 +28,3 @@ WebKitDOMEvent* kit(WebCore::Event*);
> WebCore::Event* core(WebKitDOMEvent*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMEventPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventTarget.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventTarget.h
>index 75aac189438..20504b7d462 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventTarget.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventTarget.h
>@@ -16,8 +16,7 @@
>  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
>  */
> 
>-#ifndef WebKitDOMEventTarget_h
>-#define WebKitDOMEventTarget_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/webkitdomdefines.h>
>@@ -145,4 +144,3 @@ WEBKIT_DEPRECATED gboolean webkit_dom_event_target_remove_event_listener_with_cl
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMEventTarget_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventTargetPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventTargetPrivate.h
>index e79be3845f2..99383844a24 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventTargetPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMEventTargetPrivate.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMEventTargetPrivate_h
>-#define WebKitDOMEventTargetPrivate_h
>+#pragma once
> 
> #include <webkitdom/WebKitDOMEventTarget.h>
> 
>@@ -31,4 +30,3 @@ WebKitDOMEventTarget* kit(WebCore::EventTarget*);
> WebCore::EventTarget* core(WebKitDOMEventTarget*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMEventTargetPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFile.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFile.h
>index 0c023502156..3fea8292bb5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFile.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFile.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMFile_h
>-#define WebKitDOMFile_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMBlob.h>
>@@ -61,4 +60,3 @@ webkit_dom_file_get_name(WebKitDOMFile* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMFile_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFileList.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFileList.h
>index 0fbc948b0c8..2ec26b1eafb 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFileList.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFileList.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMFileList_h
>-#define WebKitDOMFileList_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -73,4 +72,3 @@ webkit_dom_file_list_get_length(WebKitDOMFileList* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMFileList_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFileListPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFileListPrivate.h
>index a952c718e0b..f6adb4c126e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFileListPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFileListPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMFileListPrivate_h
>-#define WebKitDOMFileListPrivate_h
>+#pragma once
> 
> #include <WebCore/FileList.h>
> #include <webkitdom/WebKitDOMFileList.h>
>@@ -29,4 +28,3 @@ WebKitDOMFileList* kit(WebCore::FileList*);
> WebCore::FileList* core(WebKitDOMFileList*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMFileListPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFilePrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFilePrivate.h
>index 353d335d598..9214d733da9 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFilePrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMFilePrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMFilePrivate_h
>-#define WebKitDOMFilePrivate_h
>+#pragma once
> 
> #include <WebCore/File.h>
> #include <webkitdom/WebKitDOMFile.h>
>@@ -29,4 +28,3 @@ WebKitDOMFile* kit(WebCore::File*);
> WebCore::File* core(WebKitDOMFile*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMFilePrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAnchorElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAnchorElement.h
>index 84cc7584100..9faef38e007 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAnchorElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAnchorElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLAnchorElement_h
>-#define WebKitDOMHTMLAnchorElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -447,4 +446,3 @@ webkit_dom_html_anchor_element_set_hash(WebKitDOMHTMLAnchorElement* self, const
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLAnchorElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAnchorElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAnchorElementPrivate.h
>index a7cb53bac48..6eb3b69b566 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAnchorElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAnchorElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLAnchorElementPrivate_h
>-#define WebKitDOMHTMLAnchorElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLAnchorElement.h>
> #include <webkitdom/WebKitDOMHTMLAnchorElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLAnchorElement* kit(WebCore::HTMLAnchorElement*);
> WebCore::HTMLAnchorElement* core(WebKitDOMHTMLAnchorElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLAnchorElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAppletElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAppletElement.h
>index bce09acbb15..7985d11fd5c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAppletElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAppletElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLAppletElement_h
>-#define WebKitDOMHTMLAppletElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -292,4 +291,3 @@ webkit_dom_html_applet_element_set_width(WebKitDOMHTMLAppletElement* self, const
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLAppletElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAppletElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAppletElementPrivate.h
>index 04eb89c2895..06471a37bc4 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAppletElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAppletElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLAppletElementPrivate_h
>-#define WebKitDOMHTMLAppletElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLAppletElement.h>
> #include <webkitdom/WebKitDOMHTMLAppletElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLAppletElement* kit(WebCore::HTMLAppletElement*);
> WebCore::HTMLAppletElement* core(WebKitDOMHTMLAppletElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLAppletElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAreaElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAreaElement.h
>index 309c73ce6dc..3f550ed344b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAreaElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAreaElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLAreaElement_h
>-#define WebKitDOMHTMLAreaElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -343,4 +342,3 @@ webkit_dom_html_area_element_set_hash(WebKitDOMHTMLAreaElement* self, const gcha
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLAreaElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAreaElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAreaElementPrivate.h
>index 5449ae45a12..083360f1788 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAreaElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLAreaElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLAreaElementPrivate_h
>-#define WebKitDOMHTMLAreaElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLAreaElement.h>
> #include <webkitdom/WebKitDOMHTMLAreaElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLAreaElement* kit(WebCore::HTMLAreaElement*);
> WebCore::HTMLAreaElement* core(WebKitDOMHTMLAreaElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLAreaElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBRElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBRElement.h
>index 2540277538c..6b8c49454a3 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBRElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBRElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLBRElement_h
>-#define WebKitDOMHTMLBRElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_br_element_set_clear(WebKitDOMHTMLBRElement* self, const gchar*
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLBRElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBRElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBRElementPrivate.h
>index 3df8d863c06..83238b3808d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBRElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBRElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLBRElementPrivate_h
>-#define WebKitDOMHTMLBRElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLBRElement.h>
> #include <webkitdom/WebKitDOMHTMLBRElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLBRElement* kit(WebCore::HTMLBRElement*);
> WebCore::HTMLBRElement* core(WebKitDOMHTMLBRElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLBRElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBaseElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBaseElement.h
>index 48f150bcde4..ef322c7121d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBaseElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBaseElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLBaseElement_h
>-#define WebKitDOMHTMLBaseElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -94,4 +93,3 @@ webkit_dom_html_base_element_set_target(WebKitDOMHTMLBaseElement* self, const gc
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLBaseElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBaseElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBaseElementPrivate.h
>index 6fc31984d32..90a16693b66 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBaseElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBaseElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLBaseElementPrivate_h
>-#define WebKitDOMHTMLBaseElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLBaseElement.h>
> #include <webkitdom/WebKitDOMHTMLBaseElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLBaseElement* kit(WebCore::HTMLBaseElement*);
> WebCore::HTMLBaseElement* core(WebKitDOMHTMLBaseElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLBaseElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBodyElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBodyElement.h
>index 19f1520f423..6b10b457a7d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBodyElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBodyElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLBodyElement_h
>-#define WebKitDOMHTMLBodyElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -182,4 +181,3 @@ webkit_dom_html_body_element_set_v_link(WebKitDOMHTMLBodyElement* self, const gc
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLBodyElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBodyElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBodyElementPrivate.h
>index b31710b4793..f60b4604cf6 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBodyElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLBodyElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLBodyElementPrivate_h
>-#define WebKitDOMHTMLBodyElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLBodyElement.h>
> #include <webkitdom/WebKitDOMHTMLBodyElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLBodyElement* kit(WebCore::HTMLBodyElement*);
> WebCore::HTMLBodyElement* core(WebKitDOMHTMLBodyElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLBodyElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLButtonElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLButtonElement.h
>index a7a2690cf77..f84aab642fa 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLButtonElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLButtonElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLButtonElement_h
>-#define WebKitDOMHTMLButtonElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -182,4 +181,3 @@ webkit_dom_html_button_element_get_will_validate(WebKitDOMHTMLButtonElement* sel
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLButtonElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLButtonElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLButtonElementPrivate.h
>index 8b79accca25..7fa4dcfd817 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLButtonElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLButtonElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLButtonElementPrivate_h
>-#define WebKitDOMHTMLButtonElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLButtonElement.h>
> #include <webkitdom/WebKitDOMHTMLButtonElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLButtonElement* kit(WebCore::HTMLButtonElement*);
> WebCore::HTMLButtonElement* core(WebKitDOMHTMLButtonElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLButtonElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCanvasElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCanvasElement.h
>index 60d567293e3..31becdca022 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCanvasElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCanvasElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLCanvasElement_h
>-#define WebKitDOMHTMLCanvasElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -94,4 +93,3 @@ webkit_dom_html_canvas_element_set_height(WebKitDOMHTMLCanvasElement* self, glon
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLCanvasElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCanvasElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCanvasElementPrivate.h
>index 745cf576413..8b1fa2ebea0 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCanvasElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCanvasElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLCanvasElementPrivate_h
>-#define WebKitDOMHTMLCanvasElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLCanvasElement.h>
> #include <webkitdom/WebKitDOMHTMLCanvasElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLCanvasElement* kit(WebCore::HTMLCanvasElement*);
> WebCore::HTMLCanvasElement* core(WebKitDOMHTMLCanvasElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLCanvasElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCollection.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCollection.h
>index 2c3b1528133..3c587b33d05 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCollection.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCollection.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLCollection_h
>-#define WebKitDOMHTMLCollection_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -85,4 +84,3 @@ webkit_dom_html_collection_get_length(WebKitDOMHTMLCollection* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLCollection_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCollectionPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCollectionPrivate.h
>index a5c86598559..b80bc24eb5f 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCollectionPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLCollectionPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLCollectionPrivate_h
>-#define WebKitDOMHTMLCollectionPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLCollection.h>
> #include <webkitdom/WebKitDOMHTMLCollection.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLCollection* kit(WebCore::HTMLCollection*);
> WebCore::HTMLCollection* core(WebKitDOMHTMLCollection*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLCollectionPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDListElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDListElement.h
>index 2801792b99c..3ea4d9fc36f 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDListElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDListElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLDListElement_h
>-#define WebKitDOMHTMLDListElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_d_list_element_set_compact(WebKitDOMHTMLDListElement* self, gboo
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLDListElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDListElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDListElementPrivate.h
>index 580bd9b432b..bf798dec8ca 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDListElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDListElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLDListElementPrivate_h
>-#define WebKitDOMHTMLDListElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLDListElement.h>
> #include <webkitdom/WebKitDOMHTMLDListElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLDListElement* kit(WebCore::HTMLDListElement*);
> WebCore::HTMLDListElement* core(WebKitDOMHTMLDListElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLDListElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDirectoryElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDirectoryElement.h
>index 997be24648a..daeaa8871b6 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDirectoryElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDirectoryElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLDirectoryElement_h
>-#define WebKitDOMHTMLDirectoryElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_directory_element_set_compact(WebKitDOMHTMLDirectoryElement* sel
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLDirectoryElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDirectoryElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDirectoryElementPrivate.h
>index f10e4442e47..a1aa19306ea 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDirectoryElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDirectoryElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLDirectoryElementPrivate_h
>-#define WebKitDOMHTMLDirectoryElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLDirectoryElement.h>
> #include <webkitdom/WebKitDOMHTMLDirectoryElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLDirectoryElement* kit(WebCore::HTMLDirectoryElement*);
> WebCore::HTMLDirectoryElement* core(WebKitDOMHTMLDirectoryElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLDirectoryElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDivElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDivElement.h
>index 62143b9211d..88afbde2625 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDivElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDivElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLDivElement_h
>-#define WebKitDOMHTMLDivElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_div_element_set_align(WebKitDOMHTMLDivElement* self, const gchar
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLDivElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDivElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDivElementPrivate.h
>index dc41139ec2d..0e9f08b9210 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDivElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDivElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLDivElementPrivate_h
>-#define WebKitDOMHTMLDivElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLDivElement.h>
> #include <webkitdom/WebKitDOMHTMLDivElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLDivElement* kit(WebCore::HTMLDivElement*);
> WebCore::HTMLDivElement* core(WebKitDOMHTMLDivElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLDivElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDocument.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDocument.h
>index 94c2a72475b..52ae622ddb9 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDocument.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDocument.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLDocument_h
>-#define WebKitDOMHTMLDocument_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMDocument.h>
>@@ -244,4 +243,3 @@ webkit_dom_html_document_set_vlink_color(WebKitDOMHTMLDocument* self, const gcha
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLDocument_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDocumentPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDocumentPrivate.h
>index 12d60100dd2..250a5fc5ece 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDocumentPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLDocumentPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLDocumentPrivate_h
>-#define WebKitDOMHTMLDocumentPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLDocument.h>
> #include <webkitdom/WebKitDOMHTMLDocument.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLDocument* kit(WebCore::HTMLDocument*);
> WebCore::HTMLDocument* core(WebKitDOMHTMLDocument*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLDocumentPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElement.h
>index 3c385d16b78..f3f44f6612b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLElement_h
>-#define WebKitDOMHTMLElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMElement.h>
>@@ -375,4 +374,3 @@ webkit_dom_html_element_set_spellcheck(WebKitDOMHTMLElement* self, gboolean valu
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElementPrivate.h
>index 5f9d1c1c5e0..d0b11880a8d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLElementPrivate_h
>-#define WebKitDOMHTMLElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLElement.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLElement* kit(WebCore::HTMLElement*);
> WebCore::HTMLElement* core(WebKitDOMHTMLElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElementUnstable.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElementUnstable.h
>index cf3b73ecf45..ecbbf3b9d7e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElementUnstable.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLElementUnstable.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLElementUnstable_h
>-#define WebKitDOMHTMLElementUnstable_h
>+#pragma once
> 
> #ifdef WEBKIT_DOM_USE_UNSTABLE_API
> #define __WEBKITDOM_H_INSIDE__
>@@ -26,4 +25,3 @@
> #undef __WEBKITDOM_H_INSIDE__
> #endif /* WEBKIT_DOM_USE_UNSTABLE_API */
> 
>-#endif /* WebKitDOMHTMLElementUnstable_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLEmbedElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLEmbedElement.h
>index 6eafd57cff9..b349612dfa1 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLEmbedElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLEmbedElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLEmbedElement_h
>-#define WebKitDOMHTMLEmbedElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -182,4 +181,3 @@ webkit_dom_html_embed_element_set_width(WebKitDOMHTMLEmbedElement* self, glong v
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLEmbedElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLEmbedElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLEmbedElementPrivate.h
>index a9d657e4c4c..77ebdb06d92 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLEmbedElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLEmbedElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLEmbedElementPrivate_h
>-#define WebKitDOMHTMLEmbedElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLEmbedElement.h>
> #include <webkitdom/WebKitDOMHTMLEmbedElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLEmbedElement* kit(WebCore::HTMLEmbedElement*);
> WebCore::HTMLEmbedElement* core(WebKitDOMHTMLEmbedElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLEmbedElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFieldSetElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFieldSetElement.h
>index 44aea644492..ff6a0deb77b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFieldSetElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFieldSetElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLFieldSetElement_h
>-#define WebKitDOMHTMLFieldSetElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -61,4 +60,3 @@ webkit_dom_html_field_set_element_get_form(WebKitDOMHTMLFieldSetElement* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLFieldSetElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFieldSetElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFieldSetElementPrivate.h
>index 59f7740a4d6..07f829c923a 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFieldSetElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFieldSetElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLFieldSetElementPrivate_h
>-#define WebKitDOMHTMLFieldSetElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLFieldSetElement.h>
> #include <webkitdom/WebKitDOMHTMLFieldSetElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLFieldSetElement* kit(WebCore::HTMLFieldSetElement*);
> WebCore::HTMLFieldSetElement* core(WebKitDOMHTMLFieldSetElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLFieldSetElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFontElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFontElement.h
>index 7829d6b3b53..2ecc67bee3c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFontElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFontElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLFontElement_h
>-#define WebKitDOMHTMLFontElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -116,4 +115,3 @@ webkit_dom_html_font_element_set_size(WebKitDOMHTMLFontElement* self, const gcha
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLFontElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFontElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFontElementPrivate.h
>index eaabd4863a5..5a83a6a1f06 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFontElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFontElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLFontElementPrivate_h
>-#define WebKitDOMHTMLFontElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLFontElement.h>
> #include <webkitdom/WebKitDOMHTMLFontElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLFontElement* kit(WebCore::HTMLFontElement*);
> WebCore::HTMLFontElement* core(WebKitDOMHTMLFontElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLFontElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFormElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFormElement.h
>index 5e64a3fcaf5..896f54cefd6 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFormElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFormElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLFormElement_h
>-#define WebKitDOMHTMLFormElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -246,4 +245,3 @@ webkit_dom_html_form_element_get_length(WebKitDOMHTMLFormElement* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLFormElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFormElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFormElementPrivate.h
>index 82038dfc353..53dac43e5c9 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFormElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFormElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLFormElementPrivate_h
>-#define WebKitDOMHTMLFormElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLFormElement.h>
> #include <webkitdom/WebKitDOMHTMLFormElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLFormElement* kit(WebCore::HTMLFormElement*);
> WebCore::HTMLFormElement* core(WebKitDOMHTMLFormElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLFormElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameElement.h
>index 0feff47222a..3d9215bb1bc 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLFrameElement_h
>-#define WebKitDOMHTMLFrameElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -270,4 +269,3 @@ webkit_dom_html_frame_element_get_height(WebKitDOMHTMLFrameElement* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLFrameElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameElementPrivate.h
>index f1635ee84ad..1a636b9cfe8 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLFrameElementPrivate_h
>-#define WebKitDOMHTMLFrameElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLFrameElement.h>
> #include <webkitdom/WebKitDOMHTMLFrameElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLFrameElement* kit(WebCore::HTMLFrameElement*);
> WebCore::HTMLFrameElement* core(WebKitDOMHTMLFrameElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLFrameElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameSetElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameSetElement.h
>index 25208f34a7e..9db09777167 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameSetElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameSetElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLFrameSetElement_h
>-#define WebKitDOMHTMLFrameSetElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -94,4 +93,3 @@ webkit_dom_html_frame_set_element_set_rows(WebKitDOMHTMLFrameSetElement* self, c
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLFrameSetElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameSetElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameSetElementPrivate.h
>index 280c6138fa6..b21a284237a 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameSetElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLFrameSetElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLFrameSetElementPrivate_h
>-#define WebKitDOMHTMLFrameSetElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLFrameSetElement.h>
> #include <webkitdom/WebKitDOMHTMLFrameSetElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLFrameSetElement* kit(WebCore::HTMLFrameSetElement*);
> WebCore::HTMLFrameSetElement* core(WebKitDOMHTMLFrameSetElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLFrameSetElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHRElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHRElement.h
>index f03d07edab1..b2a2bfcbfbd 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHRElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHRElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLHRElement_h
>-#define WebKitDOMHTMLHRElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -138,4 +137,3 @@ webkit_dom_html_hr_element_set_width(WebKitDOMHTMLHRElement* self, const gchar*
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLHRElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHRElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHRElementPrivate.h
>index dc12b3e7790..9a8630c6127 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHRElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHRElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLHRElementPrivate_h
>-#define WebKitDOMHTMLHRElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLHRElement.h>
> #include <webkitdom/WebKitDOMHTMLHRElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLHRElement* kit(WebCore::HTMLHRElement*);
> WebCore::HTMLHRElement* core(WebKitDOMHTMLHRElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLHRElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadElement.h
>index 9fcdc4f2137..8e5266dc352 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLHeadElement_h
>-#define WebKitDOMHTMLHeadElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_head_element_set_profile(WebKitDOMHTMLHeadElement* self, const g
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLHeadElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadElementPrivate.h
>index 4af7a76788d..9c29a1bbca6 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLHeadElementPrivate_h
>-#define WebKitDOMHTMLHeadElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLHeadElement.h>
> #include <webkitdom/WebKitDOMHTMLHeadElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLHeadElement* kit(WebCore::HTMLHeadElement*);
> WebCore::HTMLHeadElement* core(WebKitDOMHTMLHeadElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLHeadElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadingElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadingElement.h
>index c2b42d12ded..3e1d3557e67 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadingElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadingElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLHeadingElement_h
>-#define WebKitDOMHTMLHeadingElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_heading_element_set_align(WebKitDOMHTMLHeadingElement* self, con
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLHeadingElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadingElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadingElementPrivate.h
>index 797350bab95..23982eaf44e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadingElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHeadingElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLHeadingElementPrivate_h
>-#define WebKitDOMHTMLHeadingElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLHeadingElement.h>
> #include <webkitdom/WebKitDOMHTMLHeadingElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLHeadingElement* kit(WebCore::HTMLHeadingElement*);
> WebCore::HTMLHeadingElement* core(WebKitDOMHTMLHeadingElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLHeadingElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHtmlElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHtmlElement.h
>index 8c8eaf749c4..5cd4a678f8c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHtmlElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHtmlElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLHtmlElement_h
>-#define WebKitDOMHTMLHtmlElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_html_element_set_version(WebKitDOMHTMLHtmlElement* self, const g
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLHtmlElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHtmlElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHtmlElementPrivate.h
>index 300c6f10228..6c4cb473fa2 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHtmlElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLHtmlElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLHtmlElementPrivate_h
>-#define WebKitDOMHTMLHtmlElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLHtmlElement.h>
> #include <webkitdom/WebKitDOMHTMLHtmlElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLHtmlElement* kit(WebCore::HTMLHtmlElement*);
> WebCore::HTMLHtmlElement* core(WebKitDOMHTMLHtmlElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLHtmlElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLIFrameElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLIFrameElement.h
>index 59f45df176c..a34d4d293b5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLIFrameElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLIFrameElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLIFrameElement_h
>-#define WebKitDOMHTMLIFrameElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -292,4 +291,3 @@ webkit_dom_html_iframe_element_get_content_window(WebKitDOMHTMLIFrameElement* se
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLIFrameElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLIFrameElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLIFrameElementPrivate.h
>index 2e45508ab79..94862fae6a7 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLIFrameElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLIFrameElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLIFrameElementPrivate_h
>-#define WebKitDOMHTMLIFrameElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLIFrameElement.h>
> #include <webkitdom/WebKitDOMHTMLIFrameElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLIFrameElement* kit(WebCore::HTMLIFrameElement*);
> WebCore::HTMLIFrameElement* core(WebKitDOMHTMLIFrameElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLIFrameElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLImageElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLImageElement.h
>index bd4cb58fd19..331b8466675 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLImageElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLImageElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLImageElement_h
>-#define WebKitDOMHTMLImageElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -391,4 +390,3 @@ webkit_dom_html_image_element_get_y(WebKitDOMHTMLImageElement* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLImageElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLImageElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLImageElementPrivate.h
>index e42fceebfb4..805f72dee09 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLImageElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLImageElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLImageElementPrivate_h
>-#define WebKitDOMHTMLImageElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLImageElement.h>
> #include <webkitdom/WebKitDOMHTMLImageElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLImageElement* kit(WebCore::HTMLImageElement*);
> WebCore::HTMLImageElement* core(WebKitDOMHTMLImageElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLImageElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLInputElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLInputElement.h
>index 96aebb24db2..4307b3983d6 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLInputElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLInputElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLInputElement_h
>-#define WebKitDOMHTMLInputElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -622,4 +621,3 @@ webkit_dom_html_input_element_set_editing_value(WebKitDOMHTMLInputElement* self,
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLInputElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLInputElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLInputElementPrivate.h
>index 14e72974918..1d11fb9b64f 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLInputElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLInputElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLInputElementPrivate_h
>-#define WebKitDOMHTMLInputElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLInputElement.h>
> #include <webkitdom/WebKitDOMHTMLInputElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLInputElement* kit(WebCore::HTMLInputElement*);
> WebCore::HTMLInputElement* core(WebKitDOMHTMLInputElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLInputElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLIElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLIElement.h
>index 77b3d51ce53..a7504b6c0eb 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLIElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLIElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLLIElement_h
>-#define WebKitDOMHTMLLIElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -94,4 +93,3 @@ webkit_dom_html_li_element_set_value(WebKitDOMHTMLLIElement* self, glong value);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLLIElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLIElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLIElementPrivate.h
>index f2536701a9c..35c22e8a45e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLIElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLIElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLLIElementPrivate_h
>-#define WebKitDOMHTMLLIElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLLIElement.h>
> #include <webkitdom/WebKitDOMHTMLLIElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLLIElement* kit(WebCore::HTMLLIElement*);
> WebCore::HTMLLIElement* core(WebKitDOMHTMLLIElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLLIElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLabelElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLabelElement.h
>index 6d3e51687ee..2fcd150b82b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLabelElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLabelElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLLabelElement_h
>-#define WebKitDOMHTMLLabelElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -83,4 +82,3 @@ webkit_dom_html_label_element_set_html_for(WebKitDOMHTMLLabelElement* self, cons
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLLabelElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLabelElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLabelElementPrivate.h
>index 94800575b7f..56d9843446d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLabelElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLabelElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLLabelElementPrivate_h
>-#define WebKitDOMHTMLLabelElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLLabelElement.h>
> #include <webkitdom/WebKitDOMHTMLLabelElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLLabelElement* kit(WebCore::HTMLLabelElement*);
> WebCore::HTMLLabelElement* core(WebKitDOMHTMLLabelElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLLabelElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLegendElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLegendElement.h
>index 8266b06666f..6569109eb1a 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLegendElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLegendElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLLegendElement_h
>-#define WebKitDOMHTMLLegendElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -83,4 +82,3 @@ webkit_dom_html_legend_element_set_align(WebKitDOMHTMLLegendElement* self, const
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLLegendElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLegendElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLegendElementPrivate.h
>index 28b12653712..fa8c1e89fa0 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLegendElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLegendElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLLegendElementPrivate_h
>-#define WebKitDOMHTMLLegendElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLLegendElement.h>
> #include <webkitdom/WebKitDOMHTMLLegendElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLLegendElement* kit(WebCore::HTMLLegendElement*);
> WebCore::HTMLLegendElement* core(WebKitDOMHTMLLegendElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLLegendElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLinkElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLinkElement.h
>index 75fc9b6a8cb..839730984bb 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLinkElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLinkElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLLinkElement_h
>-#define WebKitDOMHTMLLinkElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -284,4 +283,3 @@ webkit_dom_html_link_element_set_sizes(WebKitDOMHTMLLinkElement* self, const gch
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLLinkElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLinkElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLinkElementPrivate.h
>index 1c73d0f5348..d15b79b7478 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLinkElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLLinkElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLLinkElementPrivate_h
>-#define WebKitDOMHTMLLinkElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLLinkElement.h>
> #include <webkitdom/WebKitDOMHTMLLinkElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLLinkElement* kit(WebCore::HTMLLinkElement*);
> WebCore::HTMLLinkElement* core(WebKitDOMHTMLLinkElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLLinkElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMapElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMapElement.h
>index deca138f273..ce5c043bffb 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMapElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMapElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLMapElement_h
>-#define WebKitDOMHTMLMapElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -83,4 +82,3 @@ webkit_dom_html_map_element_set_name(WebKitDOMHTMLMapElement* self, const gchar*
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLMapElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMapElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMapElementPrivate.h
>index 3fbcc4e36ba..dd72b408425 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMapElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMapElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLMapElementPrivate_h
>-#define WebKitDOMHTMLMapElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLMapElement.h>
> #include <webkitdom/WebKitDOMHTMLMapElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLMapElement* kit(WebCore::HTMLMapElement*);
> WebCore::HTMLMapElement* core(WebKitDOMHTMLMapElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLMapElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMarqueeElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMarqueeElement.h
>index c6f0a196f41..aee439a5ebe 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMarqueeElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMarqueeElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLMarqueeElement_h
>-#define WebKitDOMHTMLMarqueeElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -70,4 +69,3 @@ webkit_dom_html_marquee_element_stop(WebKitDOMHTMLMarqueeElement* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLMarqueeElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMarqueeElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMarqueeElementPrivate.h
>index 50a405f3b7d..592fb55eef5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMarqueeElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMarqueeElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLMarqueeElementPrivate_h
>-#define WebKitDOMHTMLMarqueeElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLMarqueeElement.h>
> #include <webkitdom/WebKitDOMHTMLMarqueeElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLMarqueeElement* kit(WebCore::HTMLMarqueeElement*);
> WebCore::HTMLMarqueeElement* core(WebKitDOMHTMLMarqueeElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLMarqueeElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMenuElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMenuElement.h
>index 2a46b585350..2c9c5bf05d6 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMenuElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMenuElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLMenuElement_h
>-#define WebKitDOMHTMLMenuElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_menu_element_set_compact(WebKitDOMHTMLMenuElement* self, gboolea
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLMenuElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMenuElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMenuElementPrivate.h
>index 43906f52ca6..b845410244d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMenuElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMenuElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLMenuElementPrivate_h
>-#define WebKitDOMHTMLMenuElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLMenuElement.h>
> #include <webkitdom/WebKitDOMHTMLMenuElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLMenuElement* kit(WebCore::HTMLMenuElement*);
> WebCore::HTMLMenuElement* core(WebKitDOMHTMLMenuElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLMenuElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMetaElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMetaElement.h
>index dc8372cf1c1..94e7e41a934 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMetaElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMetaElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLMetaElement_h
>-#define WebKitDOMHTMLMetaElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -138,4 +137,3 @@ webkit_dom_html_meta_element_set_scheme(WebKitDOMHTMLMetaElement* self, const gc
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLMetaElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMetaElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMetaElementPrivate.h
>index fb4c31a79f9..c2dd193b2e3 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMetaElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLMetaElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLMetaElementPrivate_h
>-#define WebKitDOMHTMLMetaElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLMetaElement.h>
> #include <webkitdom/WebKitDOMHTMLMetaElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLMetaElement* kit(WebCore::HTMLMetaElement*);
> WebCore::HTMLMetaElement* core(WebKitDOMHTMLMetaElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLMetaElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLModElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLModElement.h
>index 617f0d01d6e..7bbc78363d4 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLModElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLModElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLModElement_h
>-#define WebKitDOMHTMLModElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -94,4 +93,3 @@ webkit_dom_html_mod_element_set_date_time(WebKitDOMHTMLModElement* self, const g
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLModElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLModElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLModElementPrivate.h
>index dde83567dc3..9ffb4625ced 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLModElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLModElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLModElementPrivate_h
>-#define WebKitDOMHTMLModElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLModElement.h>
> #include <webkitdom/WebKitDOMHTMLModElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLModElement* kit(WebCore::HTMLModElement*);
> WebCore::HTMLModElement* core(WebKitDOMHTMLModElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLModElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOListElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOListElement.h
>index dee128f1029..b8b29da9840 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOListElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOListElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLOListElement_h
>-#define WebKitDOMHTMLOListElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -116,4 +115,3 @@ webkit_dom_html_o_list_element_set_type_attr(WebKitDOMHTMLOListElement* self, co
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLOListElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOListElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOListElementPrivate.h
>index 1a2eaf64959..a0efbf6be43 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOListElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOListElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLOListElementPrivate_h
>-#define WebKitDOMHTMLOListElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLOListElement.h>
> #include <webkitdom/WebKitDOMHTMLOListElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLOListElement* kit(WebCore::HTMLOListElement*);
> WebCore::HTMLOListElement* core(WebKitDOMHTMLOListElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLOListElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLObjectElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLObjectElement.h
>index 10cefa0d6fe..c84e1c4690c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLObjectElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLObjectElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLObjectElement_h
>-#define WebKitDOMHTMLObjectElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -424,4 +423,3 @@ webkit_dom_html_object_element_get_content_document(WebKitDOMHTMLObjectElement*
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLObjectElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLObjectElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLObjectElementPrivate.h
>index 588a4ffea73..21c1a2b8343 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLObjectElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLObjectElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLObjectElementPrivate_h
>-#define WebKitDOMHTMLObjectElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLObjectElement.h>
> #include <webkitdom/WebKitDOMHTMLObjectElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLObjectElement* kit(WebCore::HTMLObjectElement*);
> WebCore::HTMLObjectElement* core(WebKitDOMHTMLObjectElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLObjectElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptGroupElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptGroupElement.h
>index ee6756123f4..fca339cdbd4 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptGroupElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptGroupElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLOptGroupElement_h
>-#define WebKitDOMHTMLOptGroupElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -94,4 +93,3 @@ webkit_dom_html_opt_group_element_set_label(WebKitDOMHTMLOptGroupElement* self,
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLOptGroupElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptGroupElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptGroupElementPrivate.h
>index ef2cb619d74..cbde4247e72 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptGroupElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptGroupElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLOptGroupElementPrivate_h
>-#define WebKitDOMHTMLOptGroupElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLOptGroupElement.h>
> #include <webkitdom/WebKitDOMHTMLOptGroupElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLOptGroupElement* kit(WebCore::HTMLOptGroupElement*);
> WebCore::HTMLOptGroupElement* core(WebKitDOMHTMLOptGroupElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLOptGroupElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionElement.h
>index 3e9fd877ab2..f757d6c827c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLOptionElement_h
>-#define WebKitDOMHTMLOptionElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -193,4 +192,3 @@ webkit_dom_html_option_element_get_index(WebKitDOMHTMLOptionElement* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLOptionElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionElementPrivate.h
>index 6205133b975..254e83604d5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLOptionElementPrivate_h
>-#define WebKitDOMHTMLOptionElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLOptionElement.h>
> #include <webkitdom/WebKitDOMHTMLOptionElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLOptionElement* kit(WebCore::HTMLOptionElement*);
> WebCore::HTMLOptionElement* core(WebKitDOMHTMLOptionElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLOptionElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionsCollection.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionsCollection.h
>index 00f0a83d41e..c14267ebe45 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionsCollection.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionsCollection.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLOptionsCollection_h
>-#define WebKitDOMHTMLOptionsCollection_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLCollection.h>
>@@ -95,4 +94,3 @@ webkit_dom_html_options_collection_get_length(WebKitDOMHTMLOptionsCollection* se
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLOptionsCollection_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionsCollectionPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionsCollectionPrivate.h
>index 82c65e29fa2..191785914f0 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionsCollectionPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLOptionsCollectionPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLOptionsCollectionPrivate_h
>-#define WebKitDOMHTMLOptionsCollectionPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLOptionsCollection.h>
> #include <webkitdom/WebKitDOMHTMLOptionsCollection.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLOptionsCollection* kit(WebCore::HTMLOptionsCollection*);
> WebCore::HTMLOptionsCollection* core(WebKitDOMHTMLOptionsCollection*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLOptionsCollectionPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParagraphElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParagraphElement.h
>index ad73c4518fc..7a73ec656bf 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParagraphElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParagraphElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLParagraphElement_h
>-#define WebKitDOMHTMLParagraphElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_paragraph_element_set_align(WebKitDOMHTMLParagraphElement* self,
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLParagraphElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParagraphElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParagraphElementPrivate.h
>index 8bff0db842f..2e804f52344 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParagraphElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParagraphElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLParagraphElementPrivate_h
>-#define WebKitDOMHTMLParagraphElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLParagraphElement.h>
> #include <webkitdom/WebKitDOMHTMLParagraphElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLParagraphElement* kit(WebCore::HTMLParagraphElement*);
> WebCore::HTMLParagraphElement* core(WebKitDOMHTMLParagraphElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLParagraphElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParamElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParamElement.h
>index 08f713bcee7..c395e8e08a6 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParamElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParamElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLParamElement_h
>-#define WebKitDOMHTMLParamElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -138,4 +137,3 @@ webkit_dom_html_param_element_set_value_type(WebKitDOMHTMLParamElement* self, co
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLParamElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParamElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParamElementPrivate.h
>index b0fc939cc28..2a60f0ca99b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParamElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLParamElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLParamElementPrivate_h
>-#define WebKitDOMHTMLParamElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLParamElement.h>
> #include <webkitdom/WebKitDOMHTMLParamElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLParamElement* kit(WebCore::HTMLParamElement*);
> WebCore::HTMLParamElement* core(WebKitDOMHTMLParamElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLParamElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPreElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPreElement.h
>index b0aca39285b..fd233099785 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPreElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPreElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLPreElement_h
>-#define WebKitDOMHTMLPreElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -94,4 +93,3 @@ webkit_dom_html_pre_element_set_wrap(WebKitDOMHTMLPreElement* self, gboolean val
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLPreElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPreElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPreElementPrivate.h
>index ec81962b5b1..93f20148ff9 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPreElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPreElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLPreElementPrivate_h
>-#define WebKitDOMHTMLPreElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLPreElement.h>
> #include <webkitdom/WebKitDOMHTMLPreElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLPreElement* kit(WebCore::HTMLPreElement*);
> WebCore::HTMLPreElement* core(WebKitDOMHTMLPreElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLPreElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPrivate.h
>index 8cbc5245b09..aae1acb41a5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLPrivate.h
>@@ -23,8 +23,7 @@
>  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> */
> 
>-#ifndef WebKitDOMHTMLPrivate_h
>-#define WebKitDOMHTMLPrivate_h
>+#pragma once
> 
> #include <webkitdom/webkitdomdefines.h>
> 
>@@ -36,4 +35,3 @@ namespace WebKit {
> WebKitDOMHTMLElement* wrap(WebCore::HTMLElement*);
> }
> 
>-#endif // WebKitDOMHTMLPrivate_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLQuoteElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLQuoteElement.h
>index d65e734efe2..78457d72ce7 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLQuoteElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLQuoteElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLQuoteElement_h
>-#define WebKitDOMHTMLQuoteElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_quote_element_set_cite(WebKitDOMHTMLQuoteElement* self, const gc
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLQuoteElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLQuoteElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLQuoteElementPrivate.h
>index e785c942d4f..fbccad7f55d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLQuoteElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLQuoteElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLQuoteElementPrivate_h
>-#define WebKitDOMHTMLQuoteElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLQuoteElement.h>
> #include <webkitdom/WebKitDOMHTMLQuoteElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLQuoteElement* kit(WebCore::HTMLQuoteElement*);
> WebCore::HTMLQuoteElement* core(WebKitDOMHTMLQuoteElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLQuoteElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLScriptElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLScriptElement.h
>index 1a1119dc6cb..0a4b7e8c530 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLScriptElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLScriptElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLScriptElement_h
>-#define WebKitDOMHTMLScriptElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -205,4 +204,3 @@ webkit_dom_html_script_element_set_type_attr(WebKitDOMHTMLScriptElement* self, c
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLScriptElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLScriptElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLScriptElementPrivate.h
>index 83b7ba33999..3232ef50356 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLScriptElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLScriptElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLScriptElementPrivate_h
>-#define WebKitDOMHTMLScriptElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLScriptElement.h>
> #include <webkitdom/WebKitDOMHTMLScriptElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLScriptElement* kit(WebCore::HTMLScriptElement*);
> WebCore::HTMLScriptElement* core(WebKitDOMHTMLScriptElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLScriptElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLSelectElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLSelectElement.h
>index 092cdee26c6..bfd526e521d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLSelectElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLSelectElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLSelectElement_h
>-#define WebKitDOMHTMLSelectElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -319,4 +318,3 @@ webkit_dom_html_select_element_get_will_validate(WebKitDOMHTMLSelectElement* sel
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLSelectElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLSelectElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLSelectElementPrivate.h
>index 75fd05e3ca3..2501a73651b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLSelectElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLSelectElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLSelectElementPrivate_h
>-#define WebKitDOMHTMLSelectElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLSelectElement.h>
> #include <webkitdom/WebKitDOMHTMLSelectElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLSelectElement* kit(WebCore::HTMLSelectElement*);
> WebCore::HTMLSelectElement* core(WebKitDOMHTMLSelectElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLSelectElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLStyleElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLStyleElement.h
>index 2a7645f88d7..81219f4e773 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLStyleElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLStyleElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLStyleElement_h
>-#define WebKitDOMHTMLStyleElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -127,4 +126,3 @@ webkit_dom_html_style_element_get_sheet(WebKitDOMHTMLStyleElement* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLStyleElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLStyleElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLStyleElementPrivate.h
>index 8efea4cab6a..1c491568260 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLStyleElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLStyleElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLStyleElementPrivate_h
>-#define WebKitDOMHTMLStyleElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLStyleElement.h>
> #include <webkitdom/WebKitDOMHTMLStyleElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLStyleElement* kit(WebCore::HTMLStyleElement*);
> WebCore::HTMLStyleElement* core(WebKitDOMHTMLStyleElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLStyleElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCaptionElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCaptionElement.h
>index c297463986d..af5f4357cea 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCaptionElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCaptionElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLTableCaptionElement_h
>-#define WebKitDOMHTMLTableCaptionElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_table_caption_element_set_align(WebKitDOMHTMLTableCaptionElement
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLTableCaptionElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCaptionElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCaptionElementPrivate.h
>index 2bd64ba1293..05718025e8c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCaptionElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCaptionElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLTableCaptionElementPrivate_h
>-#define WebKitDOMHTMLTableCaptionElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLTableCaptionElement.h>
> #include <webkitdom/WebKitDOMHTMLTableCaptionElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLTableCaptionElement* kit(WebCore::HTMLTableCaptionElement*);
> WebCore::HTMLTableCaptionElement* core(WebKitDOMHTMLTableCaptionElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLTableCaptionElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCellElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCellElement.h
>index def75c657d0..eb9302b56f0 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCellElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCellElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLTableCellElement_h
>-#define WebKitDOMHTMLTableCellElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -369,4 +368,3 @@ webkit_dom_html_table_cell_element_set_scope(WebKitDOMHTMLTableCellElement* self
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLTableCellElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCellElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCellElementPrivate.h
>index cdab24e4155..6a73991dfe3 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCellElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableCellElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLTableCellElementPrivate_h
>-#define WebKitDOMHTMLTableCellElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLTableCellElement.h>
> #include <webkitdom/WebKitDOMHTMLTableCellElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLTableCellElement* kit(WebCore::HTMLTableCellElement*);
> WebCore::HTMLTableCellElement* core(WebKitDOMHTMLTableCellElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLTableCellElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableColElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableColElement.h
>index 72a240f1364..1a69a4c4bdb 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableColElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableColElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLTableColElement_h
>-#define WebKitDOMHTMLTableColElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -182,4 +181,3 @@ webkit_dom_html_table_col_element_set_width(WebKitDOMHTMLTableColElement* self,
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLTableColElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableColElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableColElementPrivate.h
>index e0a3cf84739..8214efe4419 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableColElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableColElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLTableColElementPrivate_h
>-#define WebKitDOMHTMLTableColElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLTableColElement.h>
> #include <webkitdom/WebKitDOMHTMLTableColElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLTableColElement* kit(WebCore::HTMLTableColElement*);
> WebCore::HTMLTableColElement* core(WebKitDOMHTMLTableColElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLTableColElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableElement.h
>index fa78bfe3779..ac4ccbca6e0 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLTableElement_h
>-#define WebKitDOMHTMLTableElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -405,4 +404,3 @@ webkit_dom_html_table_element_set_width(WebKitDOMHTMLTableElement* self, const g
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLTableElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableElementPrivate.h
>index 4088dd53c4b..f294286b669 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLTableElementPrivate_h
>-#define WebKitDOMHTMLTableElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLTableElement.h>
> #include <webkitdom/WebKitDOMHTMLTableElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLTableElement* kit(WebCore::HTMLTableElement*);
> WebCore::HTMLTableElement* core(WebKitDOMHTMLTableElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLTableElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableRowElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableRowElement.h
>index 92ec1e5b50d..f1d14144d09 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableRowElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableRowElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLTableRowElement_h
>-#define WebKitDOMHTMLTableRowElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -218,4 +217,3 @@ webkit_dom_html_table_row_element_set_v_align(WebKitDOMHTMLTableRowElement* self
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLTableRowElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableRowElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableRowElementPrivate.h
>index d3f43124d45..1981a5ca11f 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableRowElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableRowElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLTableRowElementPrivate_h
>-#define WebKitDOMHTMLTableRowElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLTableRowElement.h>
> #include <webkitdom/WebKitDOMHTMLTableRowElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLTableRowElement* kit(WebCore::HTMLTableRowElement*);
> WebCore::HTMLTableRowElement* core(WebKitDOMHTMLTableRowElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLTableRowElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableSectionElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableSectionElement.h
>index 692e0842171..92e568a6bf7 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableSectionElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableSectionElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLTableSectionElement_h
>-#define WebKitDOMHTMLTableSectionElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -174,4 +173,3 @@ webkit_dom_html_table_section_element_get_rows(WebKitDOMHTMLTableSectionElement*
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLTableSectionElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableSectionElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableSectionElementPrivate.h
>index 09f67ea4f66..9b000810635 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableSectionElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTableSectionElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLTableSectionElementPrivate_h
>-#define WebKitDOMHTMLTableSectionElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLTableSectionElement.h>
> #include <webkitdom/WebKitDOMHTMLTableSectionElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLTableSectionElement* kit(WebCore::HTMLTableSectionElement*);
> WebCore::HTMLTableSectionElement* core(WebKitDOMHTMLTableSectionElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLTableSectionElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTextAreaElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTextAreaElement.h
>index 0e9dc15cb66..c4a818a1165 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTextAreaElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTextAreaElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLTextAreaElement_h
>-#define WebKitDOMHTMLTextAreaElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -336,4 +335,3 @@ WEBKIT_DEPRECATED gboolean webkit_dom_html_text_area_element_is_edited(WebKitDOM
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLTextAreaElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTextAreaElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTextAreaElementPrivate.h
>index c3f1ebccd62..93c9fed8b60 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTextAreaElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTextAreaElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLTextAreaElementPrivate_h
>-#define WebKitDOMHTMLTextAreaElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLTextAreaElement.h>
> #include <webkitdom/WebKitDOMHTMLTextAreaElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLTextAreaElement* kit(WebCore::HTMLTextAreaElement*);
> WebCore::HTMLTextAreaElement* core(WebKitDOMHTMLTextAreaElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLTextAreaElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTitleElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTitleElement.h
>index 8581cc16844..2be0bb7f0db 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTitleElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTitleElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLTitleElement_h
>-#define WebKitDOMHTMLTitleElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -72,4 +71,3 @@ webkit_dom_html_title_element_set_text(WebKitDOMHTMLTitleElement* self, const gc
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLTitleElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTitleElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTitleElementPrivate.h
>index 7e5281f9724..178bbdc2d7a 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTitleElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLTitleElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLTitleElementPrivate_h
>-#define WebKitDOMHTMLTitleElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLTitleElement.h>
> #include <webkitdom/WebKitDOMHTMLTitleElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLTitleElement* kit(WebCore::HTMLTitleElement*);
> WebCore::HTMLTitleElement* core(WebKitDOMHTMLTitleElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLTitleElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLUListElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLUListElement.h
>index 8c84a2eac97..4718cd274ee 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLUListElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLUListElement.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMHTMLUListElement_h
>-#define WebKitDOMHTMLUListElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMHTMLElement.h>
>@@ -94,4 +93,3 @@ webkit_dom_html_u_list_element_set_type_attr(WebKitDOMHTMLUListElement* self, co
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMHTMLUListElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLUListElementPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLUListElementPrivate.h
>index bf689521f31..f71b23cdef1 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLUListElementPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMHTMLUListElementPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMHTMLUListElementPrivate_h
>-#define WebKitDOMHTMLUListElementPrivate_h
>+#pragma once
> 
> #include <WebCore/HTMLUListElement.h>
> #include <webkitdom/WebKitDOMHTMLUListElement.h>
>@@ -29,4 +28,3 @@ WebKitDOMHTMLUListElement* kit(WebCore::HTMLUListElement*);
> WebCore::HTMLUListElement* core(WebKitDOMHTMLUListElement*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMHTMLUListElementPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMKeyboardEvent.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMKeyboardEvent.h
>index 1c5eda85ea4..fc771880ff3 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMKeyboardEvent.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMKeyboardEvent.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMKeyboardEvent_h
>-#define WebKitDOMKeyboardEvent_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMUIEvent.h>
>@@ -192,4 +191,3 @@ webkit_dom_keyboard_event_get_alt_graph_key(WebKitDOMKeyboardEvent* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMKeyboardEvent_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMKeyboardEventPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMKeyboardEventPrivate.h
>index 6f6fc16e520..528e362b6ee 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMKeyboardEventPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMKeyboardEventPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMKeyboardEventPrivate_h
>-#define WebKitDOMKeyboardEventPrivate_h
>+#pragma once
> 
> #include <WebCore/KeyboardEvent.h>
> #include <webkitdom/WebKitDOMKeyboardEvent.h>
>@@ -29,4 +28,3 @@ WebKitDOMKeyboardEvent* kit(WebCore::KeyboardEvent*);
> WebCore::KeyboardEvent* core(WebKitDOMKeyboardEvent*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMKeyboardEventPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMediaList.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMediaList.h
>index 4337979a001..7e065da4c3d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMediaList.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMediaList.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMMediaList_h
>-#define WebKitDOMMediaList_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -120,4 +119,3 @@ webkit_dom_media_list_get_length(WebKitDOMMediaList* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMMediaList_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMediaListPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMediaListPrivate.h
>index d26579181b8..6b927807795 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMediaListPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMediaListPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMMediaListPrivate_h
>-#define WebKitDOMMediaListPrivate_h
>+#pragma once
> 
> #include <WebCore/MediaList.h>
> #include <webkitdom/WebKitDOMMediaList.h>
>@@ -29,4 +28,3 @@ WebKitDOMMediaList* kit(WebCore::MediaList*);
> WebCore::MediaList* core(WebKitDOMMediaList*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMMediaListPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMouseEvent.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMouseEvent.h
>index fd4a8602c2b..683cea785b0 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMouseEvent.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMouseEvent.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMMouseEvent_h
>-#define WebKitDOMMouseEvent_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMUIEvent.h>
>@@ -251,4 +250,3 @@ webkit_dom_mouse_event_get_to_element(WebKitDOMMouseEvent* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMMouseEvent_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMouseEventPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMouseEventPrivate.h
>index e4ac9210ee5..96a463d5ff2 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMouseEventPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMMouseEventPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMMouseEventPrivate_h
>-#define WebKitDOMMouseEventPrivate_h
>+#pragma once
> 
> #include <WebCore/MouseEvent.h>
> #include <webkitdom/WebKitDOMMouseEvent.h>
>@@ -29,4 +28,3 @@ WebKitDOMMouseEvent* kit(WebCore::MouseEvent*);
> WebCore::MouseEvent* core(WebKitDOMMouseEvent*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMMouseEventPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNamedNodeMap.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNamedNodeMap.h
>index 3af41252ca9..bddd60dc378 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNamedNodeMap.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNamedNodeMap.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMNamedNodeMap_h
>-#define WebKitDOMNamedNodeMap_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -151,4 +150,3 @@ webkit_dom_named_node_map_get_length(WebKitDOMNamedNodeMap* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMNamedNodeMap_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNamedNodeMapPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNamedNodeMapPrivate.h
>index 0975cd36051..f7fa65d6780 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNamedNodeMapPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNamedNodeMapPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMNamedNodeMapPrivate_h
>-#define WebKitDOMNamedNodeMapPrivate_h
>+#pragma once
> 
> #include <WebCore/NamedNodeMap.h>
> #include <webkitdom/WebKitDOMNamedNodeMap.h>
>@@ -29,4 +28,3 @@ WebKitDOMNamedNodeMap* kit(WebCore::NamedNodeMap*);
> WebCore::NamedNodeMap* core(WebKitDOMNamedNodeMap*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMNamedNodeMapPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNode.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNode.h
>index 486ae9b8c4e..ff7e9909e17 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNode.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNode.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMNode_h
>-#define WebKitDOMNode_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <jsc/jsc.h>
>@@ -531,4 +530,3 @@ webkit_dom_node_for_js_value(JSCValue* value);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMNode_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeFilter.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeFilter.h
>index e26005035a5..3c74a736131 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeFilter.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeFilter.h
>@@ -16,8 +16,7 @@
>  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
>  */
> 
>-#ifndef WebKitDOMNodeFilter_h
>-#define WebKitDOMNodeFilter_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/webkitdomdefines.h>
>@@ -245,4 +244,3 @@ WEBKIT_DEPRECATED gshort webkit_dom_node_filter_accept_node(WebKitDOMNodeFilter
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMNodeFilter_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeFilterPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeFilterPrivate.h
>index 791f40ee479..7b294876f56 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeFilterPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeFilterPrivate.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMNodeFilterPrivate_h
>-#define WebKitDOMNodeFilterPrivate_h
>+#pragma once
> 
> #include <webkitdom/WebKitDOMNodeFilter.h>
> 
>@@ -32,4 +31,3 @@ WebKitDOMNodeFilter* kit(WebCore::NodeFilter*);
> RefPtr<WebCore::NodeFilter> core(WebCore::Document*, WebKitDOMNodeFilter*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMNodeFilterPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeIterator.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeIterator.h
>index dd4d6537b3c..0b885e52b2d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeIterator.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeIterator.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMNodeIterator_h
>-#define WebKitDOMNodeIterator_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -139,4 +138,3 @@ webkit_dom_node_iterator_get_pointer_before_reference_node(WebKitDOMNodeIterator
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMNodeIterator_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeIteratorPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeIteratorPrivate.h
>index e9ca6f10452..c07b1106eee 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeIteratorPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeIteratorPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMNodeIteratorPrivate_h
>-#define WebKitDOMNodeIteratorPrivate_h
>+#pragma once
> 
> #include <WebCore/NodeIterator.h>
> #include <webkitdom/WebKitDOMNodeIterator.h>
>@@ -29,4 +28,3 @@ WebKitDOMNodeIterator* kit(WebCore::NodeIterator*);
> WebCore::NodeIterator* core(WebKitDOMNodeIterator*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMNodeIteratorPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeList.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeList.h
>index 4175f387e79..61d1d765c4e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeList.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeList.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMNodeList_h
>-#define WebKitDOMNodeList_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -73,4 +72,3 @@ webkit_dom_node_list_get_length(WebKitDOMNodeList* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMNodeList_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeListPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeListPrivate.h
>index cde61699249..3093f32e969 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeListPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMNodeListPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMNodeListPrivate_h
>-#define WebKitDOMNodeListPrivate_h
>+#pragma once
> 
> #include <WebCore/NodeList.h>
> #include <webkitdom/WebKitDOMNodeList.h>
>@@ -29,4 +28,3 @@ WebKitDOMNodeList* kit(WebCore::NodeList*);
> WebCore::NodeList* core(WebKitDOMNodeList*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMNodeListPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMObject.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMObject.h
>index f7fbc9338b8..c114d219a5e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMObject.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMObject.h
>@@ -21,8 +21,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMObject_h
>-#define WebKitDOMObject_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/webkitdomdefines.h>
>@@ -51,4 +50,3 @@ webkit_dom_object_get_type(void);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMObject_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMProcessingInstruction.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMProcessingInstruction.h
>index 1f674f458ca..627a08609f5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMProcessingInstruction.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMProcessingInstruction.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMProcessingInstruction_h
>-#define WebKitDOMProcessingInstruction_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMCharacterData.h>
>@@ -72,4 +71,3 @@ webkit_dom_processing_instruction_get_sheet(WebKitDOMProcessingInstruction* self
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMProcessingInstruction_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMProcessingInstructionPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMProcessingInstructionPrivate.h
>index be80733ba66..981fc65a1c3 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMProcessingInstructionPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMProcessingInstructionPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMProcessingInstructionPrivate_h
>-#define WebKitDOMProcessingInstructionPrivate_h
>+#pragma once
> 
> #include <WebCore/ProcessingInstruction.h>
> #include <webkitdom/WebKitDOMProcessingInstruction.h>
>@@ -29,4 +28,3 @@ WebKitDOMProcessingInstruction* kit(WebCore::ProcessingInstruction*);
> WebCore::ProcessingInstruction* core(WebKitDOMProcessingInstruction*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMProcessingInstructionPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRange.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRange.h
>index 7b1fae0daea..02f80db3c97 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRange.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRange.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMRange_h
>-#define WebKitDOMRange_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -491,4 +490,3 @@ webkit_dom_range_expand(WebKitDOMRange* self, const gchar* unit, GError** error)
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMRange_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRangePrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRangePrivate.h
>index b1774c0c7dd..19f62bcd352 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRangePrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRangePrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMRangePrivate_h
>-#define WebKitDOMRangePrivate_h
>+#pragma once
> 
> #include <WebCore/Range.h>
> #include <webkitdom/WebKitDOMRange.h>
>@@ -29,4 +28,3 @@ WebKitDOMRange* kit(WebCore::Range*);
> WebCore::Range* core(WebKitDOMRange*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMRangePrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRangeUnstable.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRangeUnstable.h
>index 26e6d2923ff..4ba989dbd70 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRangeUnstable.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMRangeUnstable.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMRangeUnstable_h
>-#define WebKitDOMRangeUnstable_h
>+#pragma once
> 
> #ifdef WEBKIT_DOM_USE_UNSTABLE_API
> #define __WEBKITDOM_H_INSIDE__
>@@ -26,4 +25,3 @@
> #undef __WEBKITDOM_H_INSIDE__
> #endif /* WEBKIT_DOM_USE_UNSTABLE_API */
> 
>-#endif /* WebKitDOMRangeUnstable_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheet.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheet.h
>index d6d204230b1..d8a940dfc21 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheet.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheet.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMStyleSheet_h
>-#define WebKitDOMStyleSheet_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -138,4 +137,3 @@ webkit_dom_style_sheet_get_media(WebKitDOMStyleSheet* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMStyleSheet_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetList.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetList.h
>index d640475c071..f2f918d79fa 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetList.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetList.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMStyleSheetList_h
>-#define WebKitDOMStyleSheetList_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -73,4 +72,3 @@ webkit_dom_style_sheet_list_get_length(WebKitDOMStyleSheetList* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMStyleSheetList_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetListPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetListPrivate.h
>index 70d528b303d..0022d6a75ee 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetListPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetListPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMStyleSheetListPrivate_h
>-#define WebKitDOMStyleSheetListPrivate_h
>+#pragma once
> 
> #include <WebCore/StyleSheetList.h>
> #include <webkitdom/WebKitDOMStyleSheetList.h>
>@@ -29,4 +28,3 @@ WebKitDOMStyleSheetList* kit(WebCore::StyleSheetList*);
> WebCore::StyleSheetList* core(WebKitDOMStyleSheetList*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMStyleSheetListPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetPrivate.h
>index 9cfe764de58..2decfa3144c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMStyleSheetPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMStyleSheetPrivate_h
>-#define WebKitDOMStyleSheetPrivate_h
>+#pragma once
> 
> #include <WebCore/StyleSheet.h>
> #include <webkitdom/WebKitDOMStyleSheet.h>
>@@ -29,4 +28,3 @@ WebKitDOMStyleSheet* kit(WebCore::StyleSheet*);
> WebCore::StyleSheet* core(WebKitDOMStyleSheet*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMStyleSheetPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMText.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMText.h
>index 55f9f49ddc8..eb627d04dc9 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMText.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMText.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMText_h
>-#define WebKitDOMText_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMCharacterData.h>
>@@ -74,4 +73,3 @@ webkit_dom_text_get_whole_text(WebKitDOMText* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMText_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTextPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTextPrivate.h
>index 5b3e129b62e..c6f5b90622f 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTextPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTextPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMTextPrivate_h
>-#define WebKitDOMTextPrivate_h
>+#pragma once
> 
> #include <WebCore/Text.h>
> #include <webkitdom/WebKitDOMText.h>
>@@ -29,4 +28,3 @@ WebKitDOMText* kit(WebCore::Text*);
> WebCore::Text* core(WebKitDOMText*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMTextPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTreeWalker.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTreeWalker.h
>index 05708d7fc73..6060fcdb577 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTreeWalker.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTreeWalker.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMTreeWalker_h
>-#define WebKitDOMTreeWalker_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -183,4 +182,3 @@ webkit_dom_tree_walker_set_current_node(WebKitDOMTreeWalker* self, WebKitDOMNode
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMTreeWalker_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTreeWalkerPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTreeWalkerPrivate.h
>index 6a17b26c8fb..a1dc6c63529 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTreeWalkerPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMTreeWalkerPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMTreeWalkerPrivate_h
>-#define WebKitDOMTreeWalkerPrivate_h
>+#pragma once
> 
> #include <WebCore/TreeWalker.h>
> #include <webkitdom/WebKitDOMTreeWalker.h>
>@@ -29,4 +28,3 @@ WebKitDOMTreeWalker* kit(WebCore::TreeWalker*);
> WebCore::TreeWalker* core(WebKitDOMTreeWalker*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMTreeWalkerPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMUIEvent.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMUIEvent.h
>index 7d98ce18db2..f83c93ad458 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMUIEvent.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMUIEvent.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMUIEvent_h
>-#define WebKitDOMUIEvent_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMEvent.h>
>@@ -153,4 +152,3 @@ webkit_dom_ui_event_get_page_y(WebKitDOMUIEvent* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMUIEvent_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMUIEventPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMUIEventPrivate.h
>index 87bed760f79..1eea302650a 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMUIEventPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMUIEventPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMUIEventPrivate_h
>-#define WebKitDOMUIEventPrivate_h
>+#pragma once
> 
> #include <WebCore/UIEvent.h>
> #include <webkitdom/WebKitDOMUIEvent.h>
>@@ -29,4 +28,3 @@ WebKitDOMUIEvent* kit(WebCore::UIEvent*);
> WebCore::UIEvent* core(WebKitDOMUIEvent*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMUIEventPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMWheelEvent.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMWheelEvent.h
>index 12852f53ea3..494ee1f001a 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMWheelEvent.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMWheelEvent.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMWheelEvent_h
>-#define WebKitDOMWheelEvent_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMMouseEvent.h>
>@@ -104,4 +103,3 @@ webkit_dom_wheel_event_get_wheel_delta(WebKitDOMWheelEvent* self);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMWheelEvent_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMWheelEventPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMWheelEventPrivate.h
>index 06f01ee6396..5970279baf5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMWheelEventPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMWheelEventPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMWheelEventPrivate_h
>-#define WebKitDOMWheelEventPrivate_h
>+#pragma once
> 
> #include <WebCore/WheelEvent.h>
> #include <webkitdom/WebKitDOMWheelEvent.h>
>@@ -29,4 +28,3 @@ WebKitDOMWheelEvent* kit(WebCore::WheelEvent*);
> WebCore::WheelEvent* core(WebKitDOMWheelEvent*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMWheelEventPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathExpression.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathExpression.h
>index b1c90756279..d3623f2bff9 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathExpression.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathExpression.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMXPathExpression_h
>-#define WebKitDOMXPathExpression_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -65,4 +64,3 @@ webkit_dom_xpath_expression_evaluate(WebKitDOMXPathExpression* self, WebKitDOMNo
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMXPathExpression_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathExpressionPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathExpressionPrivate.h
>index 8c1c97c65b5..2603089c778 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathExpressionPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathExpressionPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMXPathExpressionPrivate_h
>-#define WebKitDOMXPathExpressionPrivate_h
>+#pragma once
> 
> #include <WebCore/XPathExpression.h>
> #include <webkitdom/WebKitDOMXPathExpression.h>
>@@ -29,4 +28,3 @@ WebKitDOMXPathExpression* kit(WebCore::XPathExpression*);
> WebCore::XPathExpression* core(WebKitDOMXPathExpression*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMXPathExpressionPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathNSResolver.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathNSResolver.h
>index 1f27b92b091..eb2c98bf23b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathNSResolver.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathNSResolver.h
>@@ -16,8 +16,7 @@
>  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
>  */
> 
>-#ifndef WebKitDOMXPathNSResolver_h
>-#define WebKitDOMXPathNSResolver_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/webkitdomdefines.h>
>@@ -60,4 +59,3 @@ WEBKIT_DEPRECATED gchar *webkit_dom_xpath_ns_resolver_lookup_namespace_uri(WebKi
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMXPathNSResolver_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathNSResolverPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathNSResolverPrivate.h
>index 1e298a2e7a4..78286aaa331 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathNSResolverPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathNSResolverPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMXPathNSResolverPrivate_h
>-#define WebKitDOMXPathNSResolverPrivate_h
>+#pragma once
> 
> #include <WebCore/XPathNSResolver.h>
> #include <webkitdom/WebKitDOMXPathNSResolver.h>
>@@ -39,4 +38,3 @@ WebKitDOMXPathNSResolver* kit(WebCore::XPathNSResolver*);
> WebCore::XPathNSResolver* core(WebKitDOMNativeXPathNSResolver*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMXPathNSResolverPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathResult.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathResult.h
>index d5a6ec7963a..b954205cc93 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathResult.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathResult.h
>@@ -21,8 +21,7 @@
> #error "Only <webkitdom/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMXPathResult_h
>-#define WebKitDOMXPathResult_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkitdom/WebKitDOMObject.h>
>@@ -231,4 +230,3 @@ webkit_dom_xpath_result_get_snapshot_length(WebKitDOMXPathResult* self, GError**
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMXPathResult_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathResultPrivate.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathResultPrivate.h
>index f72b5ae2607..12594f535c5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathResultPrivate.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/WebKitDOMXPathResultPrivate.h
>@@ -17,8 +17,7 @@
>  *  Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitDOMXPathResultPrivate_h
>-#define WebKitDOMXPathResultPrivate_h
>+#pragma once
> 
> #include <WebCore/XPathResult.h>
> #include <webkitdom/WebKitDOMXPathResult.h>
>@@ -29,4 +28,3 @@ WebKitDOMXPathResult* kit(WebCore::XPathResult*);
> WebCore::XPathResult* core(WebKitDOMXPathResult*);
> } // namespace WebKit
> 
>-#endif /* WebKitDOMXPathResultPrivate_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdom.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdom.h
>index 68f564f0cec..14a37f080b4 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdom.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdom.h
>@@ -16,8 +16,7 @@
>    Boston, MA 02110-1301, USA.
> */
> 
>-#ifndef webkitdom_h
>-#define webkitdom_h
>+#pragma once
> 
> #define __WEBKITDOM_H_INSIDE__
> 
>@@ -127,4 +126,3 @@
> 
> #undef __WEBKITDOM_H_INSIDE__
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdomautocleanups.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdomautocleanups.h
>index c8be7b07d14..5097a512164 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdomautocleanups.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdomautocleanups.h
>@@ -16,8 +16,7 @@
>    Boston, MA 02110-1301, USA.
> */
> 
>-#ifndef webkitdomautocleanups_h
>-#define webkitdomautocleanups_h
>+#pragma once
> 
> #include <glib-object.h>
> 
>@@ -127,4 +126,3 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC (WebKitDOMXPathResult, g_object_unref)
> #endif
> #endif
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdomdefines.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdomdefines.h
>index f2e71c50491..9f27977e28f 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdomdefines.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/DOM/webkitdomdefines.h
>@@ -16,8 +16,7 @@
>    Boston, MA 02110-1301, USA.
> */
> 
>-#ifndef webkitdomdefines_h
>-#define webkitdomdefines_h
>+#pragma once
> 
> #include <glib.h>
> 
>@@ -342,4 +341,3 @@ typedef struct _WebKitDOMXPathResultClass WebKitDOMXPathResultClass;
> 
> #include <webkitdom/webkitdomautocleanups.h>
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitConsoleMessage.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitConsoleMessage.h
>index cbfbcdf3187..46d7ad49237 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitConsoleMessage.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitConsoleMessage.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitConsoleMessage_h
>-#define WebKitConsoleMessage_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -99,4 +98,3 @@ webkit_console_message_get_source_id (WebKitConsoleMessage *console_message);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitFrame.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitFrame.h
>index a310060a382..a1bcdd63d60 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitFrame.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitFrame.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFrame_h
>-#define WebKitFrame_h
>+#pragma once
> 
> #include <JavaScriptCore/JSBase.h>
> #include <glib-object.h>
>@@ -88,4 +87,3 @@ webkit_frame_get_js_value_for_dom_object_in_script_world (WebKitFrame       *fra
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitScriptWorld.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitScriptWorld.h
>index cb0673e1dc3..0f74863b597 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitScriptWorld.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitScriptWorld.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitScriptWorld_h
>-#define WebKitScriptWorld_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -66,4 +65,3 @@ webkit_script_world_new         (void);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebEditor.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebEditor.h
>index 0cfe9f0082a..8d30a7b51fe 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebEditor.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebEditor.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebEditor_h
>-#define WebKitWebEditor_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -62,4 +61,3 @@ webkit_web_editor_get_page (WebKitWebEditor *editor);
> 
> G_END_DECLS
> 
>-#endif // WebKitWebEditor_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebExtension.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebExtension.h
>index 34136a37d25..a97a34c18d0 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebExtension.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebExtension.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebExtension_h
>-#define WebKitWebExtension_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -84,4 +83,3 @@ webkit_web_extension_get_page (WebKitWebExtension *extension,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebExtensionAutocleanups.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebExtensionAutocleanups.h
>index d2729109c92..5b5e75a5e4f 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebExtensionAutocleanups.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebExtensionAutocleanups.h
>@@ -27,8 +27,7 @@
> #error "Only <webkit2/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebExtensionAutocleanups_h
>-#define WebKitWebExtensionAutocleanups_h
>+#pragma once
> 
> #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
> #ifndef __GI_SCANNER__
>@@ -43,4 +42,3 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC (WebKitWebPage, g_object_unref)
> #endif // __GI_SCANNER__
> #endif // G_DEFINE_AUTOPTR_CLEANUP_FUNC
> 
>-#endif // WebKitWebExtensionAutocleanups_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebHitTestResult.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebHitTestResult.h
>index 8ce847d8761..d315cbcfc7e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebHitTestResult.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebHitTestResult.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebHitTestResult_h
>-#define WebKitWebHitTestResult_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -65,4 +64,3 @@ webkit_web_hit_test_result_get_node (WebKitWebHitTestResult *hit_test_result);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebPage.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebPage.h
>index 0a486dcb285..b286b0477b5 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebPage.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/WebKitWebPage.h
>@@ -21,8 +21,7 @@
> #error "Only <webkit2/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebPage_h
>-#define WebKitWebPage_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <webkit2/WebKitDefines.h>
>@@ -93,4 +92,3 @@ webkit_web_page_get_editor       (WebKitWebPage *web_page);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/webkit-web-extension.h b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/webkit-web-extension.h
>index 1c95f1d3aed..b1809becf2b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/gtk/webkit-web-extension.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/gtk/webkit-web-extension.h
>@@ -21,8 +21,7 @@
> #error "Headers <webkit2/webkit2.h> and <webkit2/webkit-web-extension.h> cannot be included together."
> #endif
> 
>-#ifndef __WEBKIT_WEB_EXTENSION_H__
>-#define __WEBKIT_WEB_EXTENSION_H__
>+#pragma once
> 
> #define __WEBKIT_WEB_EXTENSION_H_INSIDE__
> 
>@@ -45,4 +44,3 @@
> 
> #undef __WEBKIT_WEB_EXTENSION_H_INSIDE__
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMDefines.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMDefines.h
>index 1ef4f289ed2..a4ad0771e5e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMDefines.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMDefines.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMDefines_h
>-#define WebKitDOMDefines_h
>+#pragma once
> 
> #include <glib.h>
> 
>@@ -43,4 +42,3 @@
>     #define WEBKIT_API
> #endif
> 
>-#endif /* WebKitDOMDefines_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMDocument.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMDocument.h
>index 22c67c17e88..4bd26e371d9 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMDocument.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMDocument.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMDocument_h
>-#define WebKitDOMDocument_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDOMNode.h>
>@@ -53,4 +52,3 @@ webkit_dom_document_get_type(void);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMDocument_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMElement.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMElement.h
>index 56a6aa277a2..00827172479 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMElement.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMElement.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMElement_h
>-#define WebKitDOMElement_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDOMNode.h>
>@@ -66,4 +65,3 @@ webkit_dom_element_html_input_element_set_editing_value (WebKitDOMElement *eleme
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMElement_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMNode.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMNode.h
>index b428338ca06..2230bed2f44 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMNode.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMNode.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMNode_h
>-#define WebKitDOMNode_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <jsc/jsc.h>
>@@ -60,4 +59,3 @@ webkit_dom_node_for_js_value (JSCValue *value);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMNode_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMObject.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMObject.h
>index 757576221b7..c1fb86a2d3b 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMObject.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/WebKitDOMObject.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkitdom.h> can be included directly."
> #endif
> 
>-#ifndef WebKitDOMObject_h
>-#define WebKitDOMObject_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDOMDefines.h>
>@@ -52,4 +51,3 @@ webkit_dom_object_get_type(void);
> 
> G_END_DECLS
> 
>-#endif /* WebKitDOMObject_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/webkitdom.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/webkitdom.h
>index 92f7a024d6f..782e048d99e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/webkitdom.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/DOM/webkitdom.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef webkitdom_h
>-#define webkitdom_h
>+#pragma once
> 
> #define __WEBKITDOM_H_INSIDE__
> 
>@@ -30,4 +29,3 @@
> 
> #undef __WEBKITDOM_H_INSIDE__
> 
>-#endif /* webkitdom_h */
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitConsoleMessage.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitConsoleMessage.h
>index 5301c5a9ff3..2e648064d9e 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitConsoleMessage.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitConsoleMessage.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitConsoleMessage_h
>-#define WebKitConsoleMessage_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -99,4 +98,3 @@ webkit_console_message_get_source_id (WebKitConsoleMessage *console_message);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitFrame.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitFrame.h
>index a3c6394dad1..f0679c16a67 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitFrame.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitFrame.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitFrame_h
>-#define WebKitFrame_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <jsc/jsc.h>
>@@ -80,4 +79,3 @@ webkit_frame_get_js_value_for_dom_object_in_script_world (WebKitFrame       *fra
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitScriptWorld.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitScriptWorld.h
>index 218d790e561..7972049cd30 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitScriptWorld.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitScriptWorld.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitScriptWorld_h
>-#define WebKitScriptWorld_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -66,4 +65,3 @@ webkit_script_world_new         (void);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebEditor.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebEditor.h
>index 0d411b0ed4c..ceea7e87941 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebEditor.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebEditor.h
>@@ -21,8 +21,7 @@
> #error "Only <ape/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebEditor_h
>-#define WebKitWebEditor_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -62,4 +61,3 @@ webkit_web_editor_get_page (WebKitWebEditor *editor);
> 
> G_END_DECLS
> 
>-#endif // WebKitWebEditor_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebExtension.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebExtension.h
>index a6ffb485048..1e4225b4270 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebExtension.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebExtension.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebExtension_h
>-#define WebKitWebExtension_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -84,4 +83,3 @@ webkit_web_extension_get_page (WebKitWebExtension *extension,
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebHitTestResult.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebHitTestResult.h
>index fc43b25a8ce..d54c49a5957 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebHitTestResult.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebHitTestResult.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebHitTestResult_h
>-#define WebKitWebHitTestResult_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -65,4 +64,3 @@ webkit_web_hit_test_result_get_node (WebKitWebHitTestResult *hit_test_result);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebPage.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebPage.h
>index 30e0f93358c..9656e8e9808 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebPage.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/WebKitWebPage.h
>@@ -21,8 +21,7 @@
> #error "Only <wpe/webkit-web-extension.h> can be included directly."
> #endif
> 
>-#ifndef WebKitWebPage_h
>-#define WebKitWebPage_h
>+#pragma once
> 
> #include <glib-object.h>
> #include <wpe/WebKitDefines.h>
>@@ -91,4 +90,3 @@ webkit_web_page_get_dom_document (WebKitWebPage *web_page);
> 
> G_END_DECLS
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/webkit-web-extension.h b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/webkit-web-extension.h
>index 796b21e41f1..9a8446cb558 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/API/wpe/webkit-web-extension.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/API/wpe/webkit-web-extension.h
>@@ -21,8 +21,7 @@
> #error "Headers <wpe/webkit.h> and <wpe/webkit-web-extension.h> cannot be included together."
> #endif
> 
>-#ifndef __WEBKIT_WEB_EXTENSION_H__
>-#define __WEBKIT_WEB_EXTENSION_H__
>+#pragma once
> 
> #define __WEBKIT_WEB_EXTENSION_H_INSIDE__
> 
>@@ -42,4 +41,3 @@
> 
> #undef __WEBKIT_WEB_EXTENSION_H_INSIDE__
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/APIInjectedBundleFormClient.h b/Source/WebKit/WebProcess/InjectedBundle/APIInjectedBundleFormClient.h
>index 5449227e388..e5f074788b3 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/APIInjectedBundleFormClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/APIInjectedBundleFormClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef APIInjectedBundleFormClient_h
>-#define APIInjectedBundleFormClient_h
>+#pragma once
> 
> #include <wtf/Forward.h>
> 
>@@ -78,4 +77,3 @@ public:
> 
> } // namespace API
> 
>-#endif // APIInjectedBundleFormClient_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleCSSStyleDeclarationHandle.h b/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleCSSStyleDeclarationHandle.h
>index 95d920cabc2..a617b18c049 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleCSSStyleDeclarationHandle.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleCSSStyleDeclarationHandle.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleCSSStyleDeclarationHandle_h
>-#define InjectedBundleCSSStyleDeclarationHandle_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/Ref.h>
>@@ -49,4 +48,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleCSSStyleDeclarationHandle_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleFileHandle.h b/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleFileHandle.h
>index c0bb79884a0..9a4389944a3 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleFileHandle.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleFileHandle.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleFileHandle_h
>-#define InjectedBundleFileHandle_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/Forward.h>
>@@ -53,4 +52,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleFileHandle_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleRangeHandle.h b/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleRangeHandle.h
>index f80e33abe80..71f71d45cec 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleRangeHandle.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/DOM/InjectedBundleRangeHandle.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleRangeHandle_h
>-#define InjectedBundleRangeHandle_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "ImageOptions.h"
>@@ -67,4 +66,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleRangeHandle_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleBackForwardList.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleBackForwardList.h
>index 9edafaac7ef..3db9efe0cac 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleBackForwardList.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleBackForwardList.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleBackForwardList_h
>-#define InjectedBundleBackForwardList_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/RefPtr.h>
>@@ -58,4 +57,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleBackForwardList_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleBackForwardListItem.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleBackForwardListItem.h
>index 15e6a571b65..b2b23d557a4 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleBackForwardListItem.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleBackForwardListItem.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleBackForwardListItem_h
>-#define InjectedBundleBackForwardListItem_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/HistoryItem.h>
>@@ -69,4 +68,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleBackForwardListItem_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleClient.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleClient.h
>index bdf83d58794..4982639efef 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleClient_h
>-#define InjectedBundleClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "APIInjectedBundleBundleClient.h"
>@@ -58,4 +57,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleClient_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleDOMWindowExtension.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleDOMWindowExtension.h
>index 065f728f819..60e96b17538 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleDOMWindowExtension.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleDOMWindowExtension.h
>@@ -23,8 +23,7 @@
>  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleDOMWindowExtension_h
>-#define InjectedBundleDOMWindowExtension_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/RefPtr.h>
>@@ -59,4 +58,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleDOMWindowExtension_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleHitTestResult.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleHitTestResult.h
>index a16f0c6b549..81bc3e93d78 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleHitTestResult.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleHitTestResult.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleHitTestResult_h
>-#define InjectedBundleHitTestResult_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "InjectedBundleHitTestResultMediaType.h"
>@@ -79,4 +78,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleHitTestResult_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleHitTestResultMediaType.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleHitTestResultMediaType.h
>index ffc21d95042..e56d93f1cc7 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleHitTestResultMediaType.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleHitTestResultMediaType.h
>@@ -22,8 +22,7 @@
>  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
>-#ifndef InjectedBundleHitTestResultMediaType_h
>-#define InjectedBundleHitTestResultMediaType_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -35,4 +34,3 @@ enum BundleHitTestResultMediaType {
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleHitTestResultMediaType_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleNavigationAction.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleNavigationAction.h
>index 504b409e829..dae305d8156 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleNavigationAction.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleNavigationAction.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleNavigationAction_h
>-#define InjectedBundleNavigationAction_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "InjectedBundleHitTestResult.h"
>@@ -81,4 +80,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleNavigationAction_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageFormClient.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageFormClient.h
>index e9df5313db0..a1983adfb0d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageFormClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageFormClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundlePageFormClient_h
>-#define InjectedBundlePageFormClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "APIInjectedBundleFormClient.h"
>@@ -57,4 +56,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundlePageFormClient_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageFullScreenClient.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageFullScreenClient.h
>index 6563b6c6df3..364766c786f 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageFullScreenClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageFullScreenClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundlePageFullScreenClient_h
>-#define InjectedBundlePageFullScreenClient_h
>+#pragma once
> 
> #if ENABLE(FULLSCREEN_API)
> 
>@@ -61,4 +60,3 @@ public:
> 
> #endif // ENABLE(FULLSCREEN_API)
> 
>-#endif // InjectedBundlePageFullScreenClient_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageLoaderClient.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageLoaderClient.h
>index a90ed60af1f..713354e121c 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageLoaderClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageLoaderClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundlePageLoaderClient_h
>-#define InjectedBundlePageLoaderClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "APIInjectedBundlePageLoaderClient.h"
>@@ -92,4 +91,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundlePageLoaderClient_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePagePolicyClient.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePagePolicyClient.h
>index dc15d49d1b7..2760a11ceb2 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePagePolicyClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePagePolicyClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundlePagePolicyClient_h
>-#define InjectedBundlePagePolicyClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "WKBundlePagePolicyClient.h"
>@@ -60,4 +59,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundlePagePolicyClient_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageResourceLoadClient.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageResourceLoadClient.h
>index 3aef3dccea3..ff0782dc4e4 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageResourceLoadClient.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundlePageResourceLoadClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundlePageResourceLoadClient_h
>-#define InjectedBundlePageResourceLoadClient_h
>+#pragma once
> 
> #include "APIClient.h"
> #include "APIInjectedBundlePageResourceLoadClient.h"
>@@ -63,4 +62,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundlePageResourceLoadClient_h
>diff --git a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleScriptWorld.h b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleScriptWorld.h
>index 312de27d454..345dad3f94d 100644
>--- a/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleScriptWorld.h
>+++ b/Source/WebKit/WebProcess/InjectedBundle/InjectedBundleScriptWorld.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef InjectedBundleScriptWorld_h
>-#define InjectedBundleScriptWorld_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <wtf/Ref.h>
>@@ -64,4 +63,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // InjectedBundleScriptWorld_h
>diff --git a/Source/WebKit/WebProcess/MediaStream/UserMediaPermissionRequestManager.h b/Source/WebKit/WebProcess/MediaStream/UserMediaPermissionRequestManager.h
>index a7efc8adeaa..25df518c2f9 100644
>--- a/Source/WebKit/WebProcess/MediaStream/UserMediaPermissionRequestManager.h
>+++ b/Source/WebKit/WebProcess/MediaStream/UserMediaPermissionRequestManager.h
>@@ -17,8 +17,7 @@
>  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
>  */
> 
>-#ifndef UserMediaPermissionRequestManager_h
>-#define UserMediaPermissionRequestManager_h
>+#pragma once
> 
> #if ENABLE(MEDIA_STREAM)
> 
>@@ -79,4 +78,3 @@ private:
> 
> #endif // ENABLE(MEDIA_STREAM)
> 
>-#endif // UserMediaPermissionRequestManager_h
>diff --git a/Source/WebKit/WebProcess/Network/NetworkProcessConnection.h b/Source/WebKit/WebProcess/Network/NetworkProcessConnection.h
>index e872a81c194..fa024934f55 100644
>--- a/Source/WebKit/WebProcess/Network/NetworkProcessConnection.h
>+++ b/Source/WebKit/WebProcess/Network/NetworkProcessConnection.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetworkProcessConnection_h
>-#define NetworkProcessConnection_h
>+#pragma once
> 
> #include "Connection.h"
> #include "ShareableResource.h"
>@@ -90,4 +89,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // NetworkProcessConnection_h
>diff --git a/Source/WebKit/WebProcess/Notifications/NotificationPermissionRequestManager.h b/Source/WebKit/WebProcess/Notifications/NotificationPermissionRequestManager.h
>index b486b246367..4c2f8372a91 100644
>--- a/Source/WebKit/WebProcess/Notifications/NotificationPermissionRequestManager.h
>+++ b/Source/WebKit/WebProcess/Notifications/NotificationPermissionRequestManager.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NotificationPermissionRequestManager_h
>-#define NotificationPermissionRequestManager_h
>+#pragma once
> 
> #include <WebCore/NotificationClient.h>
> #include <WebCore/NotificationPermissionCallback.h>
>@@ -86,4 +85,3 @@ inline bool isRequestIDValid(uint64_t id)
> 
> } // namespace WebKit
> 
>-#endif // NotificationPermissionRequestManager_h
>diff --git a/Source/WebKit/WebProcess/Plugins/Netscape/JSNPMethod.h b/Source/WebKit/WebProcess/Plugins/Netscape/JSNPMethod.h
>index 1864bab2b73..fad13964046 100644
>--- a/Source/WebKit/WebProcess/Plugins/Netscape/JSNPMethod.h
>+++ b/Source/WebKit/WebProcess/Plugins/Netscape/JSNPMethod.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef JSNPMethod_h
>-#define JSNPMethod_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -81,4 +80,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // JSNPMethod_h
>diff --git a/Source/WebKit/WebProcess/Plugins/Netscape/JSNPObject.h b/Source/WebKit/WebProcess/Plugins/Netscape/JSNPObject.h
>index 3f89de8ba90..c4109e12b24 100644
>--- a/Source/WebKit/WebProcess/Plugins/Netscape/JSNPObject.h
>+++ b/Source/WebKit/WebProcess/Plugins/Netscape/JSNPObject.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef JSNPObject_h
>-#define JSNPObject_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -114,4 +113,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // JSNPObject_h
>diff --git a/Source/WebKit/WebProcess/Plugins/Netscape/NPJSObject.h b/Source/WebKit/WebProcess/Plugins/Netscape/NPJSObject.h
>index 69117c93057..69b68eb4b45 100644
>--- a/Source/WebKit/WebProcess/Plugins/Netscape/NPJSObject.h
>+++ b/Source/WebKit/WebProcess/Plugins/Netscape/NPJSObject.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NPJSObject_h
>-#define NPJSObject_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -99,4 +98,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // NPJSObject_h
>diff --git a/Source/WebKit/WebProcess/Plugins/Netscape/NPRuntimeObjectMap.h b/Source/WebKit/WebProcess/Plugins/Netscape/NPRuntimeObjectMap.h
>index 69ca5118143..c85df127d7e 100644
>--- a/Source/WebKit/WebProcess/Plugins/Netscape/NPRuntimeObjectMap.h
>+++ b/Source/WebKit/WebProcess/Plugins/Netscape/NPRuntimeObjectMap.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NPJSObjectWrapperMap_h
>-#define NPJSObjectWrapperMap_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -105,4 +104,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // NPJSObjectWrapperMap_h
>diff --git a/Source/WebKit/WebProcess/Plugins/Netscape/NPRuntimeUtilities.h b/Source/WebKit/WebProcess/Plugins/Netscape/NPRuntimeUtilities.h
>index 4775d626191..46394ff5db6 100644
>--- a/Source/WebKit/WebProcess/Plugins/Netscape/NPRuntimeUtilities.h
>+++ b/Source/WebKit/WebProcess/Plugins/Netscape/NPRuntimeUtilities.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NPRuntimeUtilities_h
>-#define NPRuntimeUtilities_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -71,4 +70,3 @@ void releaseNPVariantValue(NPVariant*);
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // NPRuntimeUtilities_h
>diff --git a/Source/WebKit/WebProcess/Plugins/Netscape/NetscapeBrowserFuncs.h b/Source/WebKit/WebProcess/Plugins/Netscape/NetscapeBrowserFuncs.h
>index 07d421fb3d3..ffdc10433c9 100644
>--- a/Source/WebKit/WebProcess/Plugins/Netscape/NetscapeBrowserFuncs.h
>+++ b/Source/WebKit/WebProcess/Plugins/Netscape/NetscapeBrowserFuncs.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetscapeBrowserFuncs_h
>-#define NetscapeBrowserFuncs_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -43,4 +42,3 @@ NPNetscapeFuncs* netscapeBrowserFuncs();
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // NetscapeBrowserFuncs_h
>diff --git a/Source/WebKit/WebProcess/Plugins/Netscape/unix/NetscapePluginUnix.h b/Source/WebKit/WebProcess/Plugins/Netscape/unix/NetscapePluginUnix.h
>index c641c75ca95..6903143cc79 100644
>--- a/Source/WebKit/WebProcess/Plugins/Netscape/unix/NetscapePluginUnix.h
>+++ b/Source/WebKit/WebProcess/Plugins/Netscape/unix/NetscapePluginUnix.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetscapePluginUnix_h
>-#define NetscapePluginUnix_h
>+#pragma once
> 
> #if PLUGIN_ARCHITECTURE(UNIX) && ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -62,4 +61,3 @@ public:
> 
> #endif // PLUGIN_ARCHITECTURE(UNIX) && ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // NetscapePluginUnix_h
>diff --git a/Source/WebKit/WebProcess/Plugins/Netscape/x11/NetscapePluginX11.h b/Source/WebKit/WebProcess/Plugins/Netscape/x11/NetscapePluginX11.h
>index 41e9b6c9d84..5906c66e88a 100644
>--- a/Source/WebKit/WebProcess/Plugins/Netscape/x11/NetscapePluginX11.h
>+++ b/Source/WebKit/WebProcess/Plugins/Netscape/x11/NetscapePluginX11.h
>@@ -24,8 +24,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef NetscapePluginX11_h
>-#define NetscapePluginX11_h
>+#pragma once
> 
> #if PLATFORM(X11) && ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -72,4 +71,3 @@ private:
> 
> #endif // PLATFORM(X11) && ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // NetscapePluginX11_h
>diff --git a/Source/WebKit/WebProcess/Plugins/PDF/PDFLayerControllerSPI.h b/Source/WebKit/WebProcess/Plugins/PDF/PDFLayerControllerSPI.h
>index b907548272c..113d45fae19 100644
>--- a/Source/WebKit/WebProcess/Plugins/PDF/PDFLayerControllerSPI.h
>+++ b/Source/WebKit/WebProcess/Plugins/PDF/PDFLayerControllerSPI.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PDFLayerControllerSPI_h
>-#define PDFLayerControllerSPI_h
>+#pragma once
> 
> #if ENABLE(PDFKIT_PLUGIN)
> 
>@@ -176,4 +175,3 @@ typedef NS_ENUM(NSInteger, PDFLayerControllerCursorType) {
> 
> #endif
> 
>-#endif // PDFLayerControllerSPI_h
>diff --git a/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginAnnotation.h b/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginAnnotation.h
>index bc6ceaed81e..b7c454355ef 100644
>--- a/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginAnnotation.h
>+++ b/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginAnnotation.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PDFPluginAnnotation_h
>-#define PDFPluginAnnotation_h
>+#pragma once
> 
> #if ENABLE(PDFKIT_PLUGIN)
> 
>@@ -116,4 +115,3 @@ private:
> 
> #endif // ENABLE(PDFKIT_PLUGIN)
> 
>-#endif // PDFPluginAnnotation_h
>diff --git a/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginChoiceAnnotation.h b/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginChoiceAnnotation.h
>index 0f7675c5d23..175358bd1f8 100644
>--- a/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginChoiceAnnotation.h
>+++ b/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginChoiceAnnotation.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PDFPluginChoiceAnnotation_h
>-#define PDFPluginChoiceAnnotation_h
>+#pragma once
> 
> #if ENABLE(PDFKIT_PLUGIN)
> 
>@@ -63,4 +62,3 @@ private:
> 
> #endif // ENABLE(PDFKIT_PLUGIN)
> 
>-#endif // PDFPluginChoiceAnnotation_h
>diff --git a/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginPasswordField.h b/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginPasswordField.h
>index 7105d9a6ba3..13813919de5 100644
>--- a/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginPasswordField.h
>+++ b/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginPasswordField.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PDFPluginPasswordField_h
>-#define PDFPluginPasswordField_h
>+#pragma once
> 
> #if ENABLE(PDFKIT_PLUGIN)
> 
>@@ -54,4 +53,3 @@ private:
> 
> #endif // ENABLE(PDFKIT_PLUGIN)
> 
>-#endif // PDFPluginTextAnnotation_h
>diff --git a/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginTextAnnotation.h b/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginTextAnnotation.h
>index 92d4023cd70..6b697bde85c 100644
>--- a/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginTextAnnotation.h
>+++ b/Source/WebKit/WebProcess/Plugins/PDF/PDFPluginTextAnnotation.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PDFPluginTextAnnotation_h
>-#define PDFPluginTextAnnotation_h
>+#pragma once
> 
> #if ENABLE(PDFKIT_PLUGIN)
> 
>@@ -70,4 +69,3 @@ private:
> 
> #endif // ENABLE(PDFKIT_PLUGIN)
> 
>-#endif // PDFPluginTextAnnotation_h
>diff --git a/Source/WebKit/WebProcess/Plugins/Plugin.h b/Source/WebKit/WebProcess/Plugins/Plugin.h
>index 876f6ce48ec..f175fde5966 100644
>--- a/Source/WebKit/WebProcess/Plugins/Plugin.h
>+++ b/Source/WebKit/WebProcess/Plugins/Plugin.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef Plugin_h
>-#define Plugin_h
>+#pragma once
> 
> #include <WebCore/FindOptions.h>
> #include <WebCore/GraphicsLayer.h>
>@@ -324,4 +323,3 @@ SPECIALIZE_TYPE_TRAITS_BEGIN(WebKit::ToValueTypeName) \
> static bool isType(const WebKit::Plugin& plugin) { return plugin.type() == WebKit::SpecificPluginType; } \
> SPECIALIZE_TYPE_TRAITS_END()
> 
>-#endif // Plugin_h
>diff --git a/Source/WebKit/WebProcess/Plugins/PluginProcessConnection.h b/Source/WebKit/WebProcess/Plugins/PluginProcessConnection.h
>index 6ab6f51bd2b..ca0e85cec68 100644
>--- a/Source/WebKit/WebProcess/Plugins/PluginProcessConnection.h
>+++ b/Source/WebKit/WebProcess/Plugins/PluginProcessConnection.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginProcessConnection_h
>-#define PluginProcessConnection_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -90,4 +89,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // PluginProcessConnection_h
>diff --git a/Source/WebKit/WebProcess/Plugins/PluginProcessConnectionManager.h b/Source/WebKit/WebProcess/Plugins/PluginProcessConnectionManager.h
>index 4f137b85dd0..cec22578d21 100644
>--- a/Source/WebKit/WebProcess/Plugins/PluginProcessConnectionManager.h
>+++ b/Source/WebKit/WebProcess/Plugins/PluginProcessConnectionManager.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PluginProcessConnectionManager_h
>-#define PluginProcessConnectionManager_h
>+#pragma once
> 
> #if ENABLE(NETSCAPE_PLUGIN_API)
> 
>@@ -72,4 +71,3 @@ private:
> 
> #endif // ENABLE(NETSCAPE_PLUGIN_API)
> 
>-#endif // PluginProcessConnectionManager_h
>diff --git a/Source/WebKit/WebProcess/WebConnectionToUIProcess.h b/Source/WebKit/WebProcess/WebConnectionToUIProcess.h
>index 34649d0f31c..7076f46eaab 100644
>--- a/Source/WebKit/WebProcess/WebConnectionToUIProcess.h
>+++ b/Source/WebKit/WebProcess/WebConnectionToUIProcess.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebConnectionToUIProcess_h
>-#define WebConnectionToUIProcess_h
>+#pragma once
> 
> #include "WebConnection.h"
> 
>@@ -55,4 +54,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebConnectionToUIProcess_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/SessionStateConversion.h b/Source/WebKit/WebProcess/WebCoreSupport/SessionStateConversion.h
>index e0e11fc8c52..7fcd2792386 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/SessionStateConversion.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/SessionStateConversion.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef SessionStateConversion_h
>-#define SessionStateConversion_h
>+#pragma once
> 
> #include <wtf/Forward.h>
> 
>@@ -42,4 +41,3 @@ Ref<WebCore::HistoryItem> toHistoryItem(const BackForwardListItemState&);
> 
> } // namespace WebKit
> 
>-#endif // SessionStateConversion_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebAlternativeTextClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebAlternativeTextClient.h
>index 4520e9d69bc..13853da1ddc 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebAlternativeTextClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebAlternativeTextClient.h
>@@ -24,8 +24,7 @@
>  */
> 
> 
>-#ifndef WebAlternativeTextClient_h
>-#define WebAlternativeTextClient_h
>+#pragma once
> 
> #include <WebCore/AlternativeTextClient.h>
> 
>@@ -64,4 +63,3 @@ private:
> 
> }
> 
>-#endif // WebAlternativeTextClient_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebChromeClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebChromeClient.h
>index 1f69e6fb7e0..5ef9fc92346 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebChromeClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebChromeClient.h
>@@ -211,7 +211,13 @@ private:
>     bool adjustLayerFlushThrottling(WebCore::LayerFlushThrottleState::Flags) final;
> 
>     void contentRuleListNotification(const WebCore::URL&, const HashSet<std::pair<String, String>>&) final;
>-    
>+   
>+#if PLATFORM(WIN)
>+    virtual void setLastSetCursorToCurrentCursor() final {};
>+    virtual void AXStartFrameLoad() final {};
>+    virtual void AXFinishFrameLoad() final {};
>+#endif
>+
> #if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)
>     RefPtr<WebCore::DisplayRefreshMonitor> createDisplayRefreshMonitor(WebCore::PlatformDisplayID) const final;
> #endif
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebColorChooser.h b/Source/WebKit/WebProcess/WebCoreSupport/WebColorChooser.h
>index a177b2594a3..5c61772647e 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebColorChooser.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebColorChooser.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebColorChooser_h
>-#define WebColorChooser_h
>+#pragma once
> 
> #if ENABLE(INPUT_TYPE_COLOR)
> 
>@@ -61,4 +60,3 @@ private:
> 
> #endif // ENABLE(INPUT_TYPE_COLOR)
> 
>-#endif // WebColorChooser_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebContextMenuClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebContextMenuClient.h
>index cec3142b16e..046e3ad27e8 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebContextMenuClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebContextMenuClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebContextMenuClient_h
>-#define WebContextMenuClient_h
>+#pragma once
> 
> #if ENABLE(CONTEXT_MENUS)
> 
>@@ -65,4 +64,3 @@ private:
> } // namespace WebKit
> 
> #endif // ENABLE(CONTEXT_MENUS)
>-#endif // WebContextMenuClient_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebDiagnosticLoggingClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebDiagnosticLoggingClient.h
>index 0b7e545fda6..b95fdb55723 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebDiagnosticLoggingClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebDiagnosticLoggingClient.h
>@@ -23,8 +23,7 @@
>  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
>  */
> 
>-#ifndef WebDiagnosticLoggingClient_h
>-#define WebDiagnosticLoggingClient_h
>+#pragma once
> 
> #include <WebCore/DiagnosticLoggingClient.h>
> #include <wtf/Forward.h>
>@@ -49,4 +48,3 @@ private:
> 
> }
> 
>-#endif
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebDragClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebDragClient.h
>index 9f7d7fc50b6..72b7394fe49 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebDragClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebDragClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebDragClient_h
>-#define WebDragClient_h
>+#pragma once
> 
> #if ENABLE(DRAG_SUPPORT)
> 
>@@ -62,4 +61,3 @@ private:
> 
> #endif // ENABLE(DRAG_SUPPORT)
> 
>-#endif // WebDragClient_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebNavigatorContentUtilsClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebNavigatorContentUtilsClient.h
>index d86d64c672a..b1dc5216ebe 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebNavigatorContentUtilsClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebNavigatorContentUtilsClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebNavigatorContentUtilsClient_h
>-#define WebNavigatorContentUtilsClient_h
>+#pragma once
> 
> #if ENABLE(NAVIGATOR_CONTENT_UTILS)
> 
>@@ -49,4 +48,3 @@ private:
> }
> 
> #endif // ENABLE(NAVIGATOR_CONTENT_UTILS)
>-#endif // WebNavigatorContentUtilsClient_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebNotificationClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebNotificationClient.h
>index 1637ad1097d..ff63f1ca389 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebNotificationClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebNotificationClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebNotificationClient_h
>-#define WebNotificationClient_h
>+#pragma once
> 
> #if ENABLE(NOTIFICATIONS)
> 
>@@ -63,4 +62,3 @@ private:
> 
> #endif // ENABLE(NOTIFICATIONS)
> 
>-#endif // WebNotificationClient_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebPlugInClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebPlugInClient.h
>index f6e014957ed..97a49a28604 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebPlugInClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebPlugInClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebPlugInClient_h
>-#define WebPlugInClient_h
>+#pragma once
> 
> #include <WebCore/PlugInClient.h>
> #include <pal/SessionID.h>
>@@ -48,4 +47,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif /* WebPlugInClient */
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebPopupMenu.h b/Source/WebKit/WebProcess/WebCoreSupport/WebPopupMenu.h
>index 0cac029b933..482135bc9dc 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebPopupMenu.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebPopupMenu.h
>@@ -19,8 +19,7 @@
>  *
>  */
> 
>-#ifndef WebPopupMenu_h
>-#define WebPopupMenu_h
>+#pragma once
> 
> #include "WebPopupItem.h"
> #include <WebCore/PopupMenu.h>
>@@ -68,4 +67,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebPopupMenu_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebProgressTrackerClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebProgressTrackerClient.h
>index 5dd65bfa0d5..2e507db3b0a 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebProgressTrackerClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebProgressTrackerClient.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebProgressTrackerClient_h
>-#define WebProgressTrackerClient_h
>+#pragma once
> 
> #include <WebCore/ProgressTrackerClient.h>
> 
>@@ -48,4 +47,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebProgressTrackerClient_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebSearchPopupMenu.h b/Source/WebKit/WebProcess/WebCoreSupport/WebSearchPopupMenu.h
>index 4e5b3b66c61..ef1ae1632f8 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebSearchPopupMenu.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebSearchPopupMenu.h
>@@ -18,8 +18,7 @@
>  *
>  */
> 
>-#ifndef WebSearchPopupMenu_h
>-#define WebSearchPopupMenu_h
>+#pragma once
> 
> #include "WebPopupMenu.h"
> #include <WebCore/SearchPopupMenu.h>
>@@ -43,4 +42,3 @@ private:
> 
> }
> 
>-#endif // WebSearchPopupMenu_h
>diff --git a/Source/WebKit/WebProcess/WebCoreSupport/WebUserMediaClient.h b/Source/WebKit/WebProcess/WebCoreSupport/WebUserMediaClient.h
>index a6e313262d5..fc39311c170 100644
>--- a/Source/WebKit/WebProcess/WebCoreSupport/WebUserMediaClient.h
>+++ b/Source/WebKit/WebProcess/WebCoreSupport/WebUserMediaClient.h
>@@ -17,8 +17,7 @@
>  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
>  */
> 
>-#ifndef WebUserMediaClient_h
>-#define WebUserMediaClient_h
>+#pragma once
> 
> #if ENABLE(MEDIA_STREAM)
> 
>@@ -51,4 +50,3 @@ private:
> 
> #endif // ENABLE(MEDIA_STREAM)
> 
>-#endif // WebUserMediaClient_h
>diff --git a/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CompositingCoordinator.h b/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CompositingCoordinator.h
>index 1ad1ae17cce..09dd15575e0 100644
>--- a/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CompositingCoordinator.h
>+++ b/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CompositingCoordinator.h
>@@ -24,8 +24,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef CompositingCoordinator_h
>-#define CompositingCoordinator_h
>+#pragma once
> 
> #if USE(COORDINATED_GRAPHICS)
> 
>@@ -150,4 +149,3 @@ private:
> 
> #endif // namespace WebKit
> 
>-#endif // CompositingCoordinator_h
>diff --git a/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CoordinatedLayerTreeHost.h b/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CoordinatedLayerTreeHost.h
>index 5061b75dda9..eec8e34c336 100644
>--- a/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CoordinatedLayerTreeHost.h
>+++ b/Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/CoordinatedLayerTreeHost.h
>@@ -18,8 +18,7 @@
>     Boston, MA 02110-1301, USA.
> */
> 
>-#ifndef CoordinatedLayerTreeHost_h
>-#define CoordinatedLayerTreeHost_h
>+#pragma once
> 
> #if USE(COORDINATED_GRAPHICS)
> 
>@@ -88,4 +87,3 @@ private:
> 
> #endif // USE(COORDINATED_GRAPHICS)
> 
>-#endif // CoordinatedLayerTreeHost_h
>diff --git a/Source/WebKit/WebProcess/WebPage/EventDispatcher.h b/Source/WebKit/WebProcess/WebPage/EventDispatcher.h
>index 1d477877eaa..468a8a41003 100644
>--- a/Source/WebKit/WebProcess/WebPage/EventDispatcher.h
>+++ b/Source/WebKit/WebProcess/WebPage/EventDispatcher.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef EventDispatcher_h
>-#define EventDispatcher_h
>+#pragma once
> 
> #include "Connection.h"
> 
>@@ -114,4 +113,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // EventDispatcher_h
>diff --git a/Source/WebKit/WebProcess/WebPage/LayerTreeHost.h b/Source/WebKit/WebProcess/WebPage/LayerTreeHost.h
>index 85dd458e018..ad9cd4a09d4 100644
>--- a/Source/WebKit/WebProcess/WebPage/LayerTreeHost.h
>+++ b/Source/WebKit/WebProcess/WebPage/LayerTreeHost.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef LayerTreeHost_h
>-#define LayerTreeHost_h
>+#pragma once
> 
> #if USE(COORDINATED_GRAPHICS) || USE(TEXTURE_MAPPER)
> 
>@@ -121,4 +120,3 @@ protected:
> 
> #endif // USE(COORDINATED_GRAPHICS) || USE(TEXTURE_MAPPER)
> 
>-#endif // LayerTreeHost_h
>diff --git a/Source/WebKit/WebProcess/WebPage/PageBanner.h b/Source/WebKit/WebProcess/WebPage/PageBanner.h
>index 84802109dfb..89a23626137 100644
>--- a/Source/WebKit/WebProcess/WebPage/PageBanner.h
>+++ b/Source/WebKit/WebProcess/WebPage/PageBanner.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PageBanner_h
>-#define PageBanner_h
>+#pragma once
> 
> #include "APIObject.h"
> #include "WebEvent.h"
>@@ -97,4 +96,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // PageBanner_h
>diff --git a/Source/WebKit/WebProcess/WebPage/ViewGestureGeometryCollector.h b/Source/WebKit/WebProcess/WebPage/ViewGestureGeometryCollector.h
>index cec0e047c04..3686087b5e0 100644
>--- a/Source/WebKit/WebProcess/WebPage/ViewGestureGeometryCollector.h
>+++ b/Source/WebKit/WebProcess/WebPage/ViewGestureGeometryCollector.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ViewGestureGeometryCollector_h
>-#define ViewGestureGeometryCollector_h
>+#pragma once
> 
> #include "MessageReceiver.h"
> #include <wtf/RunLoop.h>
>@@ -80,4 +79,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // ViewGestureGeometryCollector
>diff --git a/Source/WebKit/WebProcess/WebPage/ViewUpdateDispatcher.h b/Source/WebKit/WebProcess/WebPage/ViewUpdateDispatcher.h
>index e47dc4e1d41..1237bd306a5 100644
>--- a/Source/WebKit/WebProcess/WebPage/ViewUpdateDispatcher.h
>+++ b/Source/WebKit/WebProcess/WebPage/ViewUpdateDispatcher.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef ViewUpdateDispatcher_h
>-#define ViewUpdateDispatcher_h
>+#pragma once
> 
> #include "Connection.h"
> 
>@@ -63,4 +62,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // ViewportUpdateDispatcher_h
>diff --git a/Source/WebKit/WebProcess/WebPage/WKAccessibilityWebPageObjectIOS.h b/Source/WebKit/WebProcess/WebPage/WKAccessibilityWebPageObjectIOS.h
>index da2c6be92d1..aabf39edfca 100644
>--- a/Source/WebKit/WebProcess/WebPage/WKAccessibilityWebPageObjectIOS.h
>+++ b/Source/WebKit/WebProcess/WebPage/WKAccessibilityWebPageObjectIOS.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WKAccessibilityWebPageObjectIOS_h
>-#define WKAccessibilityWebPageObjectIOS_h
>+#pragma once
> 
> #if PLATFORM(IOS)
> 
>@@ -38,4 +37,3 @@
> 
> #endif // PLATFORM(IOS)
> 
>-#endif // WKAccessibilityWebPageObjectIOS_h
>diff --git a/Source/WebKit/WebProcess/WebPage/WebBackForwardListProxy.h b/Source/WebKit/WebProcess/WebPage/WebBackForwardListProxy.h
>index c6fe4378c7e..7a6deb3e2db 100644
>--- a/Source/WebKit/WebProcess/WebPage/WebBackForwardListProxy.h
>+++ b/Source/WebKit/WebProcess/WebPage/WebBackForwardListProxy.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebBackForwardListProxy_h
>-#define WebBackForwardListProxy_h
>+#pragma once
> 
> #include <WebCore/BackForwardClient.h>
> #include <wtf/HashSet.h>
>@@ -70,4 +69,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebBackForwardListProxy_h
>diff --git a/Source/WebKit/WebProcess/WebPage/WebContextMenu.h b/Source/WebKit/WebProcess/WebPage/WebContextMenu.h
>index aded5a67b7c..01a83d2bc27 100644
>--- a/Source/WebKit/WebProcess/WebPage/WebContextMenu.h
>+++ b/Source/WebKit/WebProcess/WebPage/WebContextMenu.h
>@@ -18,8 +18,7 @@
>  *
>  */
> 
>-#ifndef WebContextMenu_h
>-#define WebContextMenu_h
>+#pragma once
> 
> #if ENABLE(CONTEXT_MENUS)
> 
>@@ -60,4 +59,3 @@ private:
> } // namespace WebKit
> 
> #endif // ENABLE(CONTEXT_MENUS)
>-#endif // WebPopupMenu_h
>diff --git a/Source/WebKit/WebProcess/WebPage/WebDocumentLoader.h b/Source/WebKit/WebProcess/WebPage/WebDocumentLoader.h
>index f127d64d005..8321d861781 100644
>--- a/Source/WebKit/WebProcess/WebPage/WebDocumentLoader.h
>+++ b/Source/WebKit/WebProcess/WebPage/WebDocumentLoader.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebDocumentLoader_h
>-#define WebDocumentLoader_h
>+#pragma once
> 
> #include <WebCore/DocumentLoader.h>
> 
>@@ -50,4 +49,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebDocumentLoader_h
>diff --git a/Source/WebKit/WebProcess/WebPage/WebPageOverlay.h b/Source/WebKit/WebProcess/WebPage/WebPageOverlay.h
>index f07b0f818f9..245c5e158d2 100644
>--- a/Source/WebKit/WebProcess/WebPage/WebPageOverlay.h
>+++ b/Source/WebKit/WebProcess/WebPage/WebPageOverlay.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebPageOverlay_h
>-#define WebPageOverlay_h
>+#pragma once
> 
> #include "APIObject.h"
> #include <WebCore/FloatPoint.h>
>@@ -104,4 +103,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // WebPageOverlay_h
>diff --git a/Source/WebKit/WebProcess/WebPage/atk/WebPageAccessibilityObject.h b/Source/WebKit/WebProcess/WebPage/atk/WebPageAccessibilityObject.h
>index 8abc0e5a8ae..9415a61b03d 100644
>--- a/Source/WebKit/WebProcess/WebPage/atk/WebPageAccessibilityObject.h
>+++ b/Source/WebKit/WebProcess/WebPage/atk/WebPageAccessibilityObject.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebPageAccessibilityObject_h
>-#define WebPageAccessibilityObject_h
>+#pragma once
> 
> #if HAVE(ACCESSIBILITY)
> 
>@@ -64,4 +63,3 @@ void webPageAccessibilityObjectRefresh(WebPageAccessibilityObject*);
> G_END_DECLS
> 
> #endif
>-#endif // WebPageAccessibilityObject_h
>diff --git a/Source/WebKit/WebProcess/WebPage/gtk/PrinterListGtk.h b/Source/WebKit/WebProcess/WebPage/gtk/PrinterListGtk.h
>index e13cb29958c..b27a4367e72 100644
>--- a/Source/WebKit/WebProcess/WebPage/gtk/PrinterListGtk.h
>+++ b/Source/WebKit/WebProcess/WebPage/gtk/PrinterListGtk.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef PrinterListGtk_h
>-#define PrinterListGtk_h
>+#pragma once
> 
> #if HAVE(GTK_UNIX_PRINTING)
> 
>@@ -60,4 +59,3 @@ private:
> 
> #endif // HAVE(GTK_UNIX_PRINTING)
> 
>-#endif // WebPrintOperationGtk_h
>diff --git a/Source/WebKit/WebProcess/WebPage/gtk/WebPrintOperationGtk.h b/Source/WebKit/WebProcess/WebPage/gtk/WebPrintOperationGtk.h
>index b262df34c80..c2729153145 100644
>--- a/Source/WebKit/WebProcess/WebPage/gtk/WebPrintOperationGtk.h
>+++ b/Source/WebKit/WebProcess/WebPage/gtk/WebPrintOperationGtk.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebPrintOperationGtk_h
>-#define WebPrintOperationGtk_h
>+#pragma once
> 
> #include "CallbackID.h"
> #include "PrintInfo.h"
>@@ -129,4 +128,3 @@ protected:
> 
> }
> 
>-#endif // WebPrintOperationGtk_h
>diff --git a/Source/WebKit/WebProcess/WebPage/ios/FindIndicatorOverlayClientIOS.h b/Source/WebKit/WebProcess/WebPage/ios/FindIndicatorOverlayClientIOS.h
>index 535b84fb642..dfc38af3271 100644
>--- a/Source/WebKit/WebProcess/WebPage/ios/FindIndicatorOverlayClientIOS.h
>+++ b/Source/WebKit/WebProcess/WebPage/ios/FindIndicatorOverlayClientIOS.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef FindIndicatorOverlayClientIOS_h
>-#define FindIndicatorOverlayClientIOS_h
>+#pragma once
> 
> #import <WebCore/Frame.h>
> #import <WebCore/GraphicsContext.h>
>@@ -53,4 +52,3 @@ private:
> 
> } // namespace WebKit
> 
>-#endif // FindIndicatorOverlayClientIOS_h
>diff --git a/Source/WebKit/WebProcess/WebPage/mac/WKAccessibilityWebPageObjectBase.h b/Source/WebKit/WebProcess/WebPage/mac/WKAccessibilityWebPageObjectBase.h
>index be793b77ca3..a0a7bbaaebb 100644
>--- a/Source/WebKit/WebProcess/WebPage/mac/WKAccessibilityWebPageObjectBase.h
>+++ b/Source/WebKit/WebProcess/WebPage/mac/WKAccessibilityWebPageObjectBase.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WKAccessibilityWebPageObjectBase_h
>-#define WKAccessibilityWebPageObjectBase_h
>+#pragma once
> 
> namespace WebKit {
> class WebPage;
>@@ -43,4 +42,3 @@ class WebPage;
> 
> @end
> 
>-#endif // WKAccessibilityWebPageObjectBase_h
>diff --git a/Source/WebKit/WebProcess/WebPage/mac/WKAccessibilityWebPageObjectMac.h b/Source/WebKit/WebProcess/WebPage/mac/WKAccessibilityWebPageObjectMac.h
>index 5cdd33a00d1..f1e100f6c14 100644
>--- a/Source/WebKit/WebProcess/WebPage/mac/WKAccessibilityWebPageObjectMac.h
>+++ b/Source/WebKit/WebProcess/WebPage/mac/WKAccessibilityWebPageObjectMac.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WKAccessibilityWebPageObjectMac_h
>-#define WKAccessibilityWebPageObjectMac_h
>+#pragma once
> 
> 
> #if PLATFORM(MAC)
>@@ -41,4 +40,3 @@
> @end
> 
> #endif // PLATFORM(MAC)
>-#endif // WKAccessibilityWebPageObjectMac_h
>diff --git a/Source/WebKit/WebProcess/WebProcessSupplement.h b/Source/WebKit/WebProcess/WebProcessSupplement.h
>index b67a73e7348..059a14783b7 100644
>--- a/Source/WebKit/WebProcess/WebProcessSupplement.h
>+++ b/Source/WebKit/WebProcess/WebProcessSupplement.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebProcessSupplement_h
>-#define WebProcessSupplement_h
>+#pragma once
> 
> #include "ChildProcessSupplement.h"
> 
>@@ -41,4 +40,3 @@ public:
> 
> } // namespace WebKit
> 
>-#endif // WebProcessSupplement_h
>diff --git a/Source/WebKit/WebProcess/mac/SecItemShimLibrary.h b/Source/WebKit/WebProcess/mac/SecItemShimLibrary.h
>index f761a9b7cc2..07a19d2fb52 100644
>--- a/Source/WebKit/WebProcess/mac/SecItemShimLibrary.h
>+++ b/Source/WebKit/WebProcess/mac/SecItemShimLibrary.h
>@@ -22,8 +22,7 @@
>  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
>-#ifndef SecItemShimLibrary_h
>-#define SecItemShimLibrary_h
>+#pragma once
> 
> namespace WebKit {
> 
>@@ -38,4 +37,3 @@ typedef void (*SecItemShimInitializeFunc)(const SecItemShimCallbacks& callbacks)
> 
> } // namespace WebKit
> 
>-#endif // SecItemShimLibrary_h
>diff --git a/Source/WebKit/WebProcess/soup/WebKitSoupRequestInputStream.h b/Source/WebKit/WebProcess/soup/WebKitSoupRequestInputStream.h
>index d7e264d57e4..e6189ebcdb8 100644
>--- a/Source/WebKit/WebProcess/soup/WebKitSoupRequestInputStream.h
>+++ b/Source/WebKit/WebProcess/soup/WebKitSoupRequestInputStream.h
>@@ -17,8 +17,7 @@
>  * Boston, MA 02110-1301, USA.
>  */
> 
>-#ifndef WebKitSoupRequestInputStream_h
>-#define WebKitSoupRequestInputStream_h
>+#pragma once
> 
> #include <WebCore/ResourceError.h>
> #include <gio/gio.h>
>@@ -54,4 +53,3 @@ bool webkitSoupRequestInputStreamFinished(WebKitSoupRequestInputStream*);
> 
> G_END_DECLS
> 
>-#endif // WebKitSoupRequestInputStream_h
>diff --git a/Source/WebKit/WebProcess/unix/WebProcessMainUnix.h b/Source/WebKit/WebProcess/unix/WebProcessMainUnix.h
>index 209ad4f8194..59f38b104e8 100644
>--- a/Source/WebKit/WebProcess/unix/WebProcessMainUnix.h
>+++ b/Source/WebKit/WebProcess/unix/WebProcessMainUnix.h
>@@ -23,8 +23,7 @@
>  * THE POSSIBILITY OF SUCH DAMAGE.
>  */
> 
>-#ifndef WebProcessMainUnix_h
>-#define WebProcessMainUnix_h
>+#pragma once
> 
> #include <WebKit/WKBase.h>
> 
>@@ -36,4 +35,3 @@ WK_EXPORT int WebProcessMainUnix(int argc, char** argv);
> 
> } // namespace WebKit
> 
>-#endif // WebProcessMainUnix_h

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Attachments on bug 185285: 339505 | 339532