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

Source/core/html/parser/HTMLMetaCharsetParser.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 30 matching lines @@
 public:
     static PassOwnPtr<HTMLMetaCharsetParser> create() { return adoptPtr(new HTMLMetaCharsetParser()); }
 
     ~HTMLMetaCharsetParser();
 
     // Returns true if done checking, regardless whether an encoding is found.
     bool checkForMetaCharset(const char*, size_t);
 
     const WTF::TextEncoding& encoding() { return m_encoding; }
 
-    typedef Vector<pair<String, String> > AttributeList;
-    // The returned encoding might not be valid.
-    static WTF::TextEncoding encodingFromMetaAttributes(const AttributeList&
-);
-
 private:
     HTMLMetaCharsetParser();
 
     bool processMeta();
-    static String extractCharset(const String&);
-
-    enum Mode {
-        None,
-        Charset,
-        Pragma,
-    };
 
     OwnPtr<HTMLTokenizer> m_tokenizer;
     OwnPtr<TextCodec> m_assumedCodec;
     SegmentedString m_input;
     HTMLToken m_token;
     bool m_inHeadSection;
 
     bool m_doneChecking;
     WTF::TextEncoding m_encoding;
 };
 
 }
 #endif