Oilpan: Remove guardRef and guardDeref from TreeScope.

Source/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 45 matching lines @@
 class ExceptionState;
 class FloatRect;
 class GraphicsContext;
 class HTMLCanvasElement;
 class HTMLImageElement;
 class HTMLVideoElement;
 class ImageBitmap;
 class ImageData;
 class TextMetrics;
 
-typedef WillBePersistentHeapHashMap<String, RefPtrWillBeMember<MutableStylePropertySet> > MutableStylePropertyMap;
+typedef WillBeHeapHashMap<String, RefPtrWillBeMember<MutableStylePropertySet> > MutableStylePropertyMap;
 
-class CanvasRenderingContext2D FINAL: public ScriptWrappable, public CanvasRenderingContext, public CanvasPathMethods {
+class CanvasRenderingContext2D FINAL: public CanvasRenderingContext, public ScriptWrappable, public CanvasPathMethods {
 public:
-    static PassOwnPtr<CanvasRenderingContext2D> create(HTMLCanvasElement* canvas, const Canvas2DContextAttributes* attrs, bool usesCSSCompatibilityParseMode)
+    static PassOwnPtrWillBeRawPtr<CanvasRenderingContext2D> create(HTMLCanvasElement* canvas, const Canvas2DContextAttributes* attrs, bool usesCSSCompatibilityParseMode)
     {
-        return adoptPtr(new CanvasRenderingContext2D(canvas, attrs, usesCSSCompatibilityParseMode));
+        return adoptPtrWillBeNoop(new CanvasRenderingContext2D(canvas, attrs, usesCSSCompatibilityParseMode));
     }
     virtual ~CanvasRenderingContext2D();
 
     CanvasStyle* strokeStyle() const;
     void setStrokeStyle(PassRefPtr<CanvasStyle>);
 
     CanvasStyle* fillStyle() const;
     void setFillStyle(PassRefPtr<CanvasStyle>);
 
     float lineWidth() const;
@@ skipping 143 matching lines @@
 
     PassRefPtr<Canvas2DContextAttributes> getContextAttributes() const;
 
     void drawFocusIfNeeded(Element*);
     void drawFocusIfNeeded(Path2D*, Element*);
     bool drawCustomFocusRing(Element*);
 
     void loseContext();
     void restoreContext();
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 private:
     class State FINAL : public CSSFontSelectorClient {
     public:
         State();
         virtual ~State();
 
         State(const State&);
         State& operator=(const State&);
 
         // CSSFontSelectorClient implementation
@@ skipping 92 matching lines @@
     virtual bool is2d() const OVERRIDE { return true; }
     virtual bool isAccelerated() const OVERRIDE;
     virtual bool hasAlpha() const OVERRIDE { return m_hasAlpha; }
 
     virtual bool isTransformInvertible() const OVERRIDE { return state().m_invertibleCTM; }
 
     virtual blink::WebLayer* platformLayer() const OVERRIDE;
 
     // FIXME: Oilpan: Make this a vector of embedded State objects rather than pointers
     // once we support having vectors with objects using a vtable in oilpan.
-    WillBePersistentHeapVector<OwnPtrWillBeMember<State> > m_stateStack;
+    WillBeHeapVector<OwnPtrWillBeMember<State> > m_stateStack;
     bool m_usesCSSCompatibilityParseMode;
     bool m_hasAlpha;
     bool m_isContextLost;
     bool m_contextRestorable;
     Canvas2DContextStorage m_storageMode;
     MutableStylePropertyMap m_fetchedFonts;
     unsigned m_tryRestoreContextAttemptCount;
     Timer<CanvasRenderingContext2D> m_dispatchContextLostEventTimer;
     Timer<CanvasRenderingContext2D> m_dispatchContextRestoredEventTimer;
     Timer<CanvasRenderingContext2D> m_tryRestoreContextEventTimer;
 };
 
 DEFINE_TYPE_CASTS(CanvasRenderingContext2D, CanvasRenderingContext, context, context->is2d(), context.is2d());
 
 } // namespace WebCore
 
 #endif