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

Source/core/html/canvas/WebGLCompressedTextureS3TC.h

 /*
  * Copyright (C) 2012 Google 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
@@ skipping 18 matching lines @@
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/html/canvas/WebGLExtension.h"
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 class WebGLTexture;
 
 class WebGLCompressedTextureS3TC FINAL : public WebGLExtension, public ScriptWrappable {
 public:
-    static PassRefPtr<WebGLCompressedTextureS3TC> create(WebGLRenderingContextBase*);
+    static PassRefPtrWillBeRawPtr<WebGLCompressedTextureS3TC> create(WebGLRenderingContextBase*);
     static bool supported(WebGLRenderingContextBase*);
     static const char* extensionName();
 
     virtual ~WebGLCompressedTextureS3TC();
     virtual WebGLExtensionName name() const OVERRIDE;
 
 private:
-    WebGLCompressedTextureS3TC(WebGLRenderingContextBase*);
+    explicit WebGLCompressedTextureS3TC(WebGLRenderingContextBase*);
 };
 
 } // namespace blink
 
 #endif // WebGLCompressedTextureS3TC_h