Revert of Revert "Moved text decoding to the parser thread"

Source/core/core.gypi

 {
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/Animation.idl',
             'animation/Player.idl',
             'animation/TimedItem.idl',
             'css/CSS.idl',
             'css/CSSCharsetRule.idl',
             'css/CSSFontFaceLoadEvent.idl',
@@ skipping 993 matching lines @@
             'fetch/ResourceLoader.h',
             'fetch/ResourceLoaderOptions.h',
             'fetch/ResourceLoaderSet.cpp',
             'fetch/ResourceLoaderSet.h',
             'fetch/ResourcePtr.cpp',
             'fetch/ResourcePtr.h',
             'fetch/ScriptResource.cpp',
             'fetch/ScriptResource.h',
             'fetch/ShaderResource.cpp',
             'fetch/ShaderResource.h',
-            'fetch/TextResourceDecoder.cpp',
-            'fetch/TextResourceDecoder.h',
             'fetch/XSLStyleSheetResource.cpp',
             'fetch/XSLStyleSheetResource.h',
             'fileapi/Blob.cpp',
             'fileapi/Blob.h',
             'fileapi/File.cpp',
             'fileapi/File.h',
             'fileapi/FileError.cpp',
             'fileapi/FileError.h',
             'fileapi/FileList.cpp',
             'fileapi/FileList.h',
@@ skipping 847 matching lines @@
             'dom/DataObject.h',
             'dom/DataObjectItem.cpp',
             'dom/DataObjectItem.h',
             'dom/DataTransferItem.cpp',
             'dom/DataTransferItem.h',
             'dom/DataTransferItemList.cpp',
             'dom/DataTransferItemList.h',
             'dom/DecodedDataDocumentParser.cpp',
             'dom/DecodedDataDocumentParser.h',
             'dom/Document.cpp',
+            'dom/DocumentEncodingData.cpp',
             'dom/DocumentEncodingData.h',
             'dom/DocumentFragment.cpp',
             'dom/DocumentFullscreen.cpp',
             'dom/DocumentFullscreen.h',
             'dom/DocumentInit.cpp',
             'dom/DocumentInit.h',
             'dom/DocumentLifecycle.cpp',
             'dom/DocumentLifecycle.h',
             'dom/DocumentLifecycleNotifier.cpp',
             'dom/DocumentLifecycleNotifier.h',
@@ skipping 736 matching lines @@
             'html/parser/HTMLTreeBuilder.cpp',
             'html/parser/HTMLTreeBuilder.h',
             'html/parser/HTMLTreeBuilderSimulator.cpp',
             'html/parser/HTMLTreeBuilderSimulator.h',
             'html/parser/HTMLViewSourceParser.cpp',
             'html/parser/HTMLViewSourceParser.h',
             'html/parser/InputStreamPreprocessor.h',
             'html/parser/NestingLevelIncrementer.h',
             'html/parser/TextDocumentParser.cpp',
             'html/parser/TextDocumentParser.h',
+            'html/parser/TextResourceDecoder.cpp',
+            'html/parser/TextResourceDecoder.h',
             'html/parser/XSSAuditor.cpp',
             'html/parser/XSSAuditor.h',
             'html/parser/XSSAuditorDelegate.cpp',
             'html/parser/XSSAuditorDelegate.h',
             'html/shadow/PickerIndicatorElement.cpp',
             'html/shadow/PickerIndicatorElement.h',
             'html/shadow/ClearButtonElement.cpp',
             'html/shadow/ClearButtonElement.h',
             'html/shadow/DateTimeEditElement.cpp',
             'html/shadow/DateTimeEditElement.h',
@@ skipping 618 matching lines @@
             'html/track/vtt/BufferedLineReaderTest.cpp',
             'html/track/vtt/VTTScannerTest.cpp',
             'frame/ImageBitmapTest.cpp',
             'rendering/RenderOverflowTest.cpp',
             'rendering/shapes/BoxShapeTest.cpp',
             'testing/UnitTestHelpers.h',
             'testing/UnitTestHelpers.cpp',
         ],
     }
 }