blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/css/invalidation/StyleSheetInvalidationAnalysis.h

 /*
  * Copyright (C) 2012 Apple 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 15 matching lines @@
 #ifndef StyleSheetInvalidationAnalysis_h
 #define StyleSheetInvalidationAnalysis_h
 
 #include "platform/heap/Handle.h"
 #include "wtf/HashSet.h"
 #include "wtf/Vector.h"
 #include "wtf/text/StringImpl.h"
 
 namespace blink {
 
-class Document;
-class Node;
 class StyleSheetContents;
 class TreeScope;
 
 class StyleSheetInvalidationAnalysis {
   STACK_ALLOCATED();
   WTF_MAKE_NONCOPYABLE(StyleSheetInvalidationAnalysis);
 
  public:
   StyleSheetInvalidationAnalysis(const TreeScope&,
                                  const HeapVector<Member<StyleSheetContents>>&);
 
   bool dirtiesAllStyle() const { return m_dirtiesAllStyle; }
   void invalidateStyle();
 
  private:
   void analyzeStyleSheet(StyleSheetContents*);
 
   Member<const TreeScope> m_treeScope;
   HashSet<StringImpl*> m_idScopes;
   HashSet<StringImpl*> m_classScopes;
 
   bool m_dirtiesAllStyle = false;
   bool m_addsKeyframes = false;
 };
 
 }  // namespace blink
 
 #endif