Remove various Heap* types.

sky/engine/core/css/CSSCanvasValue.h

 /*
  * Copyright (C) 2008 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 34 matching lines @@
 
     PassRefPtr<Image> image(RenderObject*, const IntSize&);
     bool isFixedSize() const { return true; }
     IntSize fixedSize(const RenderObject*);
 
     bool isPending() const { return false; }
     void loadSubimages(ResourceFetcher*) { }
 
     bool equals(const CSSCanvasValue&) const;
 
-    void traceAfterDispatch(Visitor*);
-
 private:
     explicit CSSCanvasValue(const String& name)
         : CSSImageGeneratorValue(CanvasClass)
         , m_canvasObserver(adoptPtr(new CanvasObserverProxy(this)))
         , m_name(name)
         , m_element(nullptr)
     {
     }
 
     // NOTE: We put the CanvasObserver in a member instead of inheriting from it
@@ skipping 10 matching lines @@
         virtual void canvasResized(HTMLCanvasElement* canvas) override
         {
             m_ownerValue->canvasResized(canvas);
         }
 #if !ENABLE(OILPAN)
         virtual void canvasDestroyed(HTMLCanvasElement* canvas) override
         {
             m_ownerValue->canvasDestroyed(canvas);
         }
 #endif
-        virtual void trace(Visitor* visitor) override
-        {
-            visitor->trace(m_ownerValue);
-            CanvasObserver::trace(visitor);
-        }
 
     private:
         RawPtr<CSSCanvasValue> m_ownerValue;
     };
 
     void canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect);
     void canvasResized(HTMLCanvasElement*);
 
 #if !ENABLE(OILPAN)
     void canvasDestroyed(HTMLCanvasElement*);
 #endif
 
     HTMLCanvasElement* element(Document*);
 
     OwnPtr<CanvasObserverProxy> m_canvasObserver;
 
     // The name of the canvas.
     String m_name;
     // The document supplies the element and owns it.
     RawPtr<HTMLCanvasElement> m_element;
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSCanvasValue, isCanvasValue());
 
 } // namespace blink
 
 #endif // CSSCanvasValue_h