Remove tons of OILPAN.

sky/engine/core/dom/ChildListMutationScope.h

 /*
  * Copyright (C) 2011 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 46 matching lines @@
     void childAdded(PassRefPtr<Node>);
     void willRemoveChild(PassRefPtr<Node>);
 
     bool hasObservers() const { return m_observers; }
 
     // Register and unregister mutation scopes that are using this mutation
     // accumulator.
     void enterMutationScope() { m_mutationScopes++; }
     void leaveMutationScope();
 
-    void trace(Visitor*);
-
 private:
     ChildListMutationAccumulator(PassRefPtr<Node>, PassOwnPtr<MutationObserverInterestGroup>);
 
     void enqueueMutationRecord();
     bool isEmpty();
     bool isAddedNodeInOrder(Node*);
     bool isRemovedNodeInOrder(Node*);
 
     RefPtr<Node> m_target;
 
@@ skipping 42 matching lines @@
             m_accumulator->willRemoveChild(&child);
     }
 
 private:
     RefPtr<ChildListMutationAccumulator> m_accumulator;
 };
 
 } // namespace blink
 
 #endif // ChildListMutationScope_h