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

Source/core/html/parser/CSSPreloadScanner.h

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * 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
@@ skipping 15 matching lines @@
 
 #ifndef CSSPreloadScanner_h
 #define CSSPreloadScanner_h
 
 #include "core/html/parser/HTMLResourcePreloader.h"
 #include "core/html/parser/HTMLToken.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace WebCore {
 
-class HTMLIdentifier;
 class SegmentedString;
 
 class CSSPreloadScanner {
     WTF_MAKE_NONCOPYABLE(CSSPreloadScanner);
 public:
     CSSPreloadScanner();
     ~CSSPreloadScanner();
 
     void reset();
 
@@ skipping 24 matching lines @@
     StringBuilder m_rule;
     StringBuilder m_ruleValue;
 
     // Only non-zero during scan()
     PreloadRequestStream* m_requests;
 };
 
 }
 
 #endif