Moved text decoding to the parser thread

Source/core/html/parser/TextDocumentParser.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 23 matching lines @@
 public:
     static PassRefPtr<TextDocumentParser> create(HTMLDocument* document)
     {
         return adoptRef(new TextDocumentParser(document));
     }
     virtual ~TextDocumentParser();
 
 private:
     explicit TextDocumentParser(HTMLDocument*);
 
-    virtual void append(PassRefPtr<StringImpl>);
+    virtual void append(PassRefPtr<StringImpl>) OVERRIDE;
+    virtual void appendBytes(const char*, size_t) OVERRIDE;
     void insertFakePreElement();
 
     bool m_haveInsertedFakePreElement;
 };
 
 }
 
 #endif