I think the time has come to remove CSS regions. We are the only remaining engine that supports them unprefixed, and the maintenance cost is too high to justify.
https://lists.webkit.org/pipermail/webkit-dev/2017-July/029315.html
Created attachment 316840 [details] Patch for EWS Let's start with style, DOM and layout tests. Ripping out the stuff in rendering will require a bit more care.
Created attachment 316842 [details] Patch for EWS
Created attachment 316869 [details] Patch for EWS
Created attachment 316876 [details] Patch for EWS
Attachment 316876 [details] did not pass style-queue: ERROR: Source/WebCore/style/RenderTreePosition.cpp:108: Weird number of spaces at line-start. Are you using a 4-space indent? [whitespace/indent] [3] ERROR: /Volumes/Data/StyleQueue/WebKit/LayoutTests/platform/ios/TestExpectations:1538: Path does not exist. [test/expectations] [5] ERROR: /Volumes/Data/StyleQueue/WebKit/LayoutTests/platform/ios-simulator-wk1/TestExpectations:8: Path does not exist. [test/expectations] [5] ERROR: /Volumes/Data/StyleQueue/WebKit/LayoutTests/platform/mac/TestExpectations:1164: Path does not exist. [test/expectations] [5] ERROR: /Volumes/Data/StyleQueue/WebKit/LayoutTests/platform/win/TestExpectations:2807: Path does not exist. [test/expectations] [5] ERROR: /Volumes/Data/StyleQueue/WebKit/LayoutTests/platform/win/TestExpectations:3114: More specific entry for accessibility/heading-crash-after-hidden.html on line LayoutTests/platform/win/TestExpectations:3114 overrides line LayoutTests/platform/win/TestExpectations:1349. [test/expectations] [5] ERROR: /Volumes/Data/StyleQueue/WebKit/LayoutTests/platform/win/TestExpectations:3772: More specific entry for http/tests/websocket/tests/hybi/workers/close-code-and-reason.html on line LayoutTests/platform/win/TestExpectations:3772 overrides line LayoutTests/platform/win/TestExpectations:2159. [test/expectations] [5] Total errors found: 7 in 10 files If any of these errors are false positives, please file a bug against check-webkit-style.
Comment on attachment 316876 [details] Patch for EWS Attachment 316876 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/4236093 New failing tests: fast/dom/collection-iterators.html
Created attachment 316904 [details] Archive of layout-test-results from ews122 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews122 Port: ios-simulator-wk2 Platform: Mac OS X 10.12.5
Comment on attachment 316876 [details] Patch for EWS Attachment 316876 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/4236104 New failing tests: fast/dom/collection-iterators.html
Created attachment 316905 [details] Archive of layout-test-results from ews123 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews123 Port: ios-simulator-wk2 Platform: Mac OS X 10.12.5
Comment on attachment 316876 [details] Patch for EWS Attachment 316876 [details] did not pass mac-debug-ews (mac): Output: http://webkit-queues.webkit.org/results/4237137 New failing tests: fast/dom/StyleSheet/detached-sheet-owner-node-link.html
Created attachment 316924 [details] Archive of layout-test-results from ews116 for mac-elcapitan The attached test failures were seen while running run-webkit-tests on the mac-debug-ews. Bot: ews116 Port: mac-elcapitan Platform: Mac OS X 10.11.6
Created attachment 318121 [details] Patch for EWS
Created attachment 318128 [details] Patch for EWS
Attachment 318128 [details] did not pass style-queue: ERROR: Source/WebCore/PAL/Configurations/FeatureDefines.xcconfig:0: Any changes made to FeatureDefines should be made to all of them (changed file does not match Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig). Use sync-feature-defines if possible. [featuredefines/equality] [5] ERROR: Source/WebKitLegacy/mac/Configurations/FeatureDefines.xcconfig:0: Any changes made to FeatureDefines should be made to all of them (changed file does not match Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig). Use sync-feature-defines if possible. [featuredefines/equality] [5] ERROR: Source/WebCore/style/RenderTreePosition.cpp:108: Weird number of spaces at line-start. Are you using a 4-space indent? [whitespace/indent] [3] ERROR: Source/WebKit/Configurations/FeatureDefines.xcconfig:0: Any changes made to FeatureDefines should be made to all of them (changed file does not match Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig). Use sync-feature-defines if possible. [featuredefines/equality] [5] ERROR: Source/WebCore/Configurations/FeatureDefines.xcconfig:0: Any changes made to FeatureDefines should be made to all of them (changed file does not match Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig). Use sync-feature-defines if possible. [featuredefines/equality] [5] ERROR: Source/JavaScriptCore/Configurations/FeatureDefines.xcconfig:0: Any changes made to FeatureDefines should be made to all of them (changed file does not match Tools/TestWebKitAPI/Configurations/FeatureDefines.xcconfig). Use sync-feature-defines if possible. [featuredefines/equality] [5] ERROR: /Volumes/Data/StyleQueue/WebKit/LayoutTests/platform/ios/TestExpectations:1537: Path does not exist. [test/expectations] [5] ERROR: /Volumes/Data/StyleQueue/WebKit/LayoutTests/platform/ios-simulator-wk1/TestExpectations:8: Path does not exist. [test/expectations] [5] ERROR: /Volumes/Data/StyleQueue/WebKit/LayoutTests/platform/win/TestExpectations:2795: Path does not exist. [test/expectations] [5] Total errors found: 9 in 11 files If any of these errors are false positives, please file a bug against check-webkit-style.
<rdar://problem/34541384>