Clean up forward declarations in Source/core/css

Source/core/svg/properties/SVGProperty.h

 /*
  * Copyright (C) 2013 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 22 matching lines @@
 
 #include "core/svg/properties/SVGPropertyInfo.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
-class ExceptionState;
 class SVGElement;
 class SVGAnimationElement;
 
 class SVGPropertyBase : public RefCountedWillBeRefCountedGarbageCollected<SVGPropertyBase> {
     WTF_MAKE_NONCOPYABLE(SVGPropertyBase);
 
 public:
     // Properties do not have a primitive type by default
     typedef void PrimitiveType;
 
@@ skipping 45 matching lines @@
 
 private:
     const AnimatedPropertyType m_type;
 
     RawPtrWillBeMember<SVGPropertyBase> m_ownerList;
 };
 
 }
 
 #endif // SVGProperty_h