Add missing includes in TextCodecReplacement.cpp

[Frédéric Wang (:fredw)]

Patch from bug 188043 exhibits a possible build error when with unifiedbuild source rotating:

In file included from /Volumes/Data/EWS/WebKit/WebKitBuild/Release/DerivedSources/WebCore/unified-sources/UnifiedSource357.cpp:1:
./platform/text/TextCodecReplacement.cpp:49:30: error: implicit instantiation of undefined template 'WTF::Function<std::__1::unique_ptr<WebCore::TextCodec, std::__1::default_delete<WebCore::TextCodec> > ()>'
    registrar("replacement", [] {
                             ^
In file included from /Volumes/Data/EWS/WebKit/WebKitBuild/Release/DerivedSources/WebCore/unified-sources/UnifiedSource357.cpp:1:
In file included from ./platform/text/TextCodecReplacement.cpp:27:
In file included from ./platform/text/TextCodecReplacement.h:28:
In file included from ./platform/text/TextCodecUTF8.h:28:
In file included from ./platform/text/TextCodec.h:33:
/Volumes/Data/EWS/WebKit/WebKitBuild/Release/usr/local/include/wtf/Forward.h:53:26: note: template is declared here
template<typename> class Function;
                         ^
In file included from /Volumes/Data/EWS/WebKit/WebKitBuild/Release/DerivedSources/WebCore/unified-sources/UnifiedSource357.cpp:1:
./platform/text/TextCodecReplacement.cpp:49:30: note: candidate function
    registrar("replacement", [] {
                             ^
./platform/text/TextCodecReplacement.cpp:54:30: error: incomplete result type 'WTF::String' in function definition
String TextCodecReplacement::decode(const char*, size_t, bool, bool, bool& sawError)
                             ^
In file included from /Volumes/Data/EWS/WebKit/WebKitBuild/Release/DerivedSources/WebCore/unified-sources/UnifiedSource357.cpp:1:
In file included from ./platform/text/TextCodecReplacement.cpp:27:
In file included from ./platform/text/TextCodecReplacement.h:28:
In file included from ./platform/text/TextCodecUTF8.h:28:
In file included from ./platform/text/TextCodec.h:33:
/Volumes/Data/EWS/WebKit/WebKitBuild/Release/usr/local/include/wtf/Forward.h:39:7: note: forward declaration of 'WTF::String'
class String;
      ^
In file included from /Volumes/Data/EWS/WebKit/WebKitBuild/Release/DerivedSources/WebCore/unified-sources/UnifiedSource357.cpp:1:
./platform/text/TextCodecReplacement.cpp:58:16: error: use of undeclared identifier 'emptyString'
        return emptyString();
               ^
./platform/text/TextCodecReplacement.cpp:60:12: error: invalid use of incomplete type 'WTF::String'
    return String { &replacementCharacter, 1 };
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /Volumes/Data/EWS/WebKit/WebKitBuild/Release/DerivedSources/WebCore/unified-sources/UnifiedSource357.cpp:1:
In file included from ./platform/text/TextCodecReplacement.cpp:27:
In file included from ./platform/text/TextCodecReplacement.h:28:
In file included from ./platform/text/TextCodecUTF8.h:28:
In file included from ./platform/text/TextCodec.h:33:
/Volumes/Data/EWS/WebKit/WebKitBuild/Release/usr/local/include/wtf/Forward.h:39:7: note: forward declaration of 'WTF::String'
class String;
      ^
4 errors generated.

[Frédéric Wang (:fredw)]

Created attachment 350570 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 350570 [details]
Patch

Clearing flags on attachment: 350570

Committed r236393: <https://trac.webkit.org/changeset/236393>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Radar WebKit Bug Importer]

<rdar://problem/44715585>