Oilpan: move 2D Canvas and WebGL objects to the heap.

Source/core/html/canvas/WebGLProgram.h

 /*
  * Copyright (C) 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 20 matching lines @@
 #include "core/html/canvas/WebGLShader.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class WebGLProgram FINAL : public WebGLSharedObject, public ScriptWrappable {
 public:
     virtual ~WebGLProgram();
 
-    static PassRefPtr<WebGLProgram> create(WebGLRenderingContextBase*);
+    static PassRefPtrWillBeRawPtr<WebGLProgram> create(WebGLRenderingContextBase*);
 
     unsigned numActiveAttribLocations();
     GLint getActiveAttribLocation(GLuint index);
 
     bool isUsingVertexAttrib0();
 
     bool linkStatus();
 
     unsigned linkCount() const { return m_linkCount; }
 
     // This is to be called everytime after the program is successfully linked.
     // We don't deal with integer overflow here, assuming in reality a program
     // will never be linked so many times.
     // Also, we invalidate the cached program info.
     void increaseLinkCount();
 
     WebGLShader* getAttachedShader(GLenum);
     bool attachShader(WebGLShader*);
     bool detachShader(WebGLShader*);
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 protected:
-    WebGLProgram(WebGLRenderingContextBase*);
+    explicit WebGLProgram(WebGLRenderingContextBase*);
 
     virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) OVERRIDE;
 
 private:
     virtual bool isProgram() const OVERRIDE { return true; }
 
     void cacheActiveAttribLocations(blink::WebGraphicsContext3D*);
     void cacheInfoIfNeeded();
 
     Vector<GLint> m_activeAttribLocations;
 
     GLint m_linkStatus;
 
     // This is used to track whether a WebGLUniformLocation belongs to this
     // program or not.
     unsigned m_linkCount;
 
-    RefPtr<WebGLShader> m_vertexShader;
-    RefPtr<WebGLShader> m_fragmentShader;
+    RefPtrWillBeMember<WebGLShader> m_vertexShader;
+    RefPtrWillBeMember<WebGLShader> m_fragmentShader;
 
     bool m_infoValid;
 };
 
 } // namespace blink
 
 #endif // WebGLProgram_h