Remove tons of OILPAN.

sky/engine/core/html/ImageData.h

 /*
  * Copyright (C) 2008, 2009 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 35 matching lines @@
     static PassRefPtr<ImageData> create(const IntSize&);
     static PassRefPtr<ImageData> create(const IntSize&, PassRefPtr<Uint8ClampedArray>);
     static PassRefPtr<ImageData> create(unsigned width, unsigned height, ExceptionState&);
     static PassRefPtr<ImageData> create(Uint8ClampedArray*, unsigned width, unsigned height, ExceptionState&);
 
     IntSize size() const { return m_size; }
     int width() const { return m_size.width(); }
     int height() const { return m_size.height(); }
     Uint8ClampedArray* data() const { return m_data.get(); }
 
-    void trace(Visitor*) { }
-
     virtual v8::Handle<v8::Object> wrap(v8::Handle<v8::Object> creationContext, v8::Isolate*) override;
 
 private:
     explicit ImageData(const IntSize&);
     ImageData(const IntSize&, PassRefPtr<Uint8ClampedArray>);
 
     IntSize m_size;
     RefPtr<Uint8ClampedArray> m_data;
 };
 
 } // namespace blink
 
 #endif // ImageData_h