Remove tons of OILPAN.

sky/engine/core/animation/AnimationNode.cpp

 /*
  * 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 168 matching lines @@
         m_player->update(TimingUpdateOnDemand);
     ASSERT(!m_player->outdated());
     return m_calculated;
 }
 
 PassRefPtr<AnimationNodeTiming> AnimationNode::timing()
 {
     return AnimationNodeTiming::create(this);
 }
 
-void AnimationNode::trace(Visitor* visitor)
-{
-    visitor->trace(m_parent);
-    visitor->trace(m_player);
-    visitor->trace(m_eventDelegate);
-}
-
 } // namespace blink