Remove tons of OILPAN.

sky/engine/core/html/canvas/CanvasRenderingContext2D.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011, 2012 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 216 matching lines @@
     void addHitRegion(ExceptionState&);
     void addHitRegion(const Dictionary&, ExceptionState&);
     void removeHitRegion(const String& id);
     void clearHitRegions();
     HitRegion* hitRegionAtPoint(const LayoutPoint&);
     unsigned hitRegionsCount() const;
 
     void loseContext();
     void restoreContext();
 
-    virtual void trace(Visitor*) override;
-
 private:
     enum Direction {
         DirectionInherit,
         DirectionRTL,
         DirectionLTR
     };
 
     class State final : public CSSFontSelectorClient {
     public:
         State();
         virtual ~State();
 
         State(const State&);
         State& operator=(const State&);
 
         // CSSFontSelectorClient implementation
         virtual void fontsNeedUpdate(CSSFontSelector*) override;
 
-        virtual void trace(Visitor*) override;
-
         unsigned m_unrealizedSaveCount;
 
         String m_unparsedStrokeColor;
         String m_unparsedFillColor;
         RefPtr<CanvasStyle> m_strokeStyle;
         RefPtr<CanvasStyle> m_fillStyle;
         float m_lineWidth;
         LineCap m_lineCap;
         LineJoin m_lineJoin;
         float m_miterLimit;
@@ skipping 102 matching lines @@
     Timer<CanvasRenderingContext2D> m_dispatchContextLostEventTimer;
     Timer<CanvasRenderingContext2D> m_dispatchContextRestoredEventTimer;
     Timer<CanvasRenderingContext2D> m_tryRestoreContextEventTimer;
 };
 
 DEFINE_TYPE_CASTS(CanvasRenderingContext2D, CanvasRenderingContext, context, context->is2d(), context.is2d());
 
 } // namespace blink
 
 #endif // CanvasRenderingContext2D_h