blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/css/parser/CSSParserObserverWrapper.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CSSParserObserverWrapper_h
 #define CSSParserObserverWrapper_h
 
 #include "core/css/parser/CSSParserObserver.h"
 #include "wtf/Allocator.h"
 
 namespace blink {
 
+class CSSParserToken;
+class CSSParserTokenRange;
+
 class CSSParserObserverWrapper {
   STACK_ALLOCATED();
 
  public:
   explicit CSSParserObserverWrapper(CSSParserObserver& observer)
       : m_observer(observer) {}
 
   unsigned startOffset(const CSSParserTokenRange&);
   unsigned previousTokenStartOffset(const CSSParserTokenRange&);
   unsigned endOffset(const CSSParserTokenRange&);  // Includes trailing comments
@@ skipping 26 matching lines @@
     unsigned tokensBefore;
   };
 
   Vector<CommentPosition> m_commentOffsets;
   Vector<CommentPosition>::iterator m_commentIterator;
 };
 
 }  // namespace blink
 
 #endif  // CSSParserObserverWrapper_h