Move TextResourceDecoder from loader/ to fetch/

Source/core/core.gypi

 {
     'variables': {
         'deprecated_perl_core_idl_files': [
             'css/CSS.idl',
             'css/CSSCharsetRule.idl',
             'css/CSSFontFaceLoadEvent.idl',
             'css/CSSFontFaceRule.idl',
             'css/CSSHostRule.idl',
             'css/CSSImportRule.idl',
             'css/CSSKeyframeRule.idl',
@@ skipping 875 matching lines @@
             'editing/VisibleUnits.cpp',
             'editing/WrapContentsInDummySpanCommand.cpp',
             'editing/WrapContentsInDummySpanCommand.h',
             'editing/chromium/EditorChromium.cpp',
             'editing/htmlediting.cpp',
             'editing/markup.cpp',
             'fetch/CSSStyleSheetResource.cpp',
             'fetch/CSSStyleSheetResource.h',
             'fetch/DocumentResource.cpp',
             'fetch/DocumentResource.h',
+            'fetch/DocumentResourceReference.h',
             'fetch/FontResource.cpp',
             'fetch/FontResource.h',
             'fetch/ImageResource.cpp',
             'fetch/ImageResource.h',
             'fetch/RawResource.cpp',
             'fetch/RawResource.h',
             'fetch/Resource.cpp',
             'fetch/Resource.h',
             'fetch/ResourceClientWalker.h',
             'fetch/ResourceFetcher.cpp',
             'fetch/ResourceFetcher.h',
             'fetch/ResourceLoadNotifier.cpp',
             'fetch/ResourceLoadNotifier.h',
             'fetch/ResourceLoader.cpp',
             'fetch/ResourceLoader.h',
             'fetch/ResourceLoaderOptions.h',
             'fetch/ResourcePtr.cpp',
             'fetch/ResourcePtr.h',
             'fetch/FetchRequest.cpp',
             'fetch/FetchRequest.h',
             'fetch/FetchInitiatorInfo.h',
             'fetch/ScriptResource.cpp',
             'fetch/ScriptResource.h',
             'fetch/ShaderResource.cpp',
             'fetch/ShaderResource.h',
-            'fetch/DocumentResourceReference.h',
+            'fetch/TextResourceDecoder.cpp',
+            'fetch/TextResourceDecoder.h',
             'fetch/TextTrackResource.cpp',
             'fetch/TextTrackResource.h',
             'fetch/XSLStyleSheetResource.cpp',
             'fetch/XSLStyleSheetResource.h',
             'fetch/MemoryCache.cpp',
             'fetch/MemoryCache.h',
             'fileapi/Blob.cpp',
             'fileapi/Blob.h',
             'fileapi/BlobBuilder.cpp',
             'fileapi/BlobBuilder.h',
@@ skipping 185 matching lines @@
             'loader/PingLoader.cpp',
             'loader/PingLoader.h',
             'loader/Prerenderer.cpp',
             'loader/Prerenderer.h',
             'loader/PrerendererClient.cpp',
             'loader/PrerendererClient.h',
             'loader/ProgressTracker.cpp',
             'loader/SinkDocument.cpp',
             'loader/SinkDocument.h',
             'loader/SubstituteData.h',
-            'loader/TextResourceDecoder.cpp',
             'loader/TextResourceDecoderBuilder.cpp',
             'loader/TextResourceDecoderBuilder.h',
             'loader/TextTrackLoader.cpp',
             'loader/TextTrackLoader.h',
             'loader/ThreadableLoader.cpp',
             'loader/ThreadableLoaderClient.h',
             'loader/ThreadableLoaderClientWrapper.h',
             'loader/UniqueIdentifier.cpp',
             'loader/UniqueIdentifier.h',
             'loader/WorkerThreadableLoader.cpp',
@@ skipping 2727 matching lines @@
                 'bison_exe': 'bison',
                 # We specify a preprocess so it happens locally and won't get
                 # distributed to goma.
                 # FIXME: /usr/bin/gcc won't exist on OSX forever. We want to
                 # use /usr/bin/clang once we require Xcode 4.x.
                 'preprocessor': '--preprocessor "/usr/bin/gcc -E -P -x c++"'
               }],
          ],
     }
 }