blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/frame/FrameSerializer.h

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 32 matching lines @@
 
 class Attribute;
 class CSSRule;
 class CSSStyleSheet;
 class CSSValue;
 class Document;
 class Element;
 class FontResource;
 class ImageResource;
 class LocalFrame;
-class Node;
-class LayoutObject;
 class Resource;
 class SharedBuffer;
 class StylePropertySet;
 
 struct SerializedResource;
 
 // This class is used to serialize frame's contents back to text (typically
 // HTML).  It serializes frame's document and resources such as images and CSS
 // stylesheets.
 class CORE_EXPORT FrameSerializer final {
@@ skipping 65 matching lines @@
   HashSet<KURL> m_resourceURLs;
 
   bool m_isSerializingCss;
 
   Delegate& m_delegate;
 };
 
 }  // namespace blink
 
 #endif  // FrameSerializer_h