Remove tons of OILPAN.

sky/engine/core/html/canvas/Path2D.h

 /*
  * Copyright (C) 2012, 2013 Adobe Systems Incorporated. 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 37 matching lines @@
     static PassRefPtr<Path2D> create(const Path& path) { return adoptRef(new Path2D(path)); }
 
     const Path& path() const { return m_path; }
 
     void addPath(Path2D* path)
     {
         m_path.addPath(path->path(), AffineTransform(1, 0, 0, 1, 0, 0));
     }
 
     virtual ~Path2D() { }
-    void trace(Visitor*) { }
 
 private:
     Path2D() : CanvasPathMethods()
     {
     }
 
     Path2D(const Path& path)
         : CanvasPathMethods(path)
     {
     }
 
     Path2D(Path2D* path)
         : CanvasPathMethods(path->path())
     {
     }
 };
 
 } // namespace blink
 
 #endif // Path2D_h