blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/animation/KeyframeEffect.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 23 matching lines @@
 #include "core/CoreExport.h"
 #include "core/animation/AnimationEffectTiming.h"
 #include "core/animation/EffectModel.h"
 #include "core/animation/KeyframeEffectReadOnly.h"
 
 namespace blink {
 
 class Element;
 class ExceptionState;
 class KeyframeEffectOptions;
-class PropertyHandle;
 
 // Represents the effect of an Animation on an Element's properties.
 // http://w3c.github.io/web-animations/#keyframe-effect
 class CORE_EXPORT KeyframeEffect final : public KeyframeEffectReadOnly {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static KeyframeEffect* create(Element*,
                                 EffectModel*,
                                 const Timing&,
@@ skipping 35 matching lines @@
 
 DEFINE_TYPE_CASTS(KeyframeEffect,
                   AnimationEffectReadOnly,
                   animationNode,
                   animationNode->isKeyframeEffect(),
                   animationNode.isKeyframeEffect());
 
 }  // namespace blink
 
 #endif  // KeyframeEffect_h