Remove CanvasRenderingContext from the web exposed objects

Source/core/html/canvas/WebGLRenderingContextBase.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
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  * 1. Redistributions of source code must retain the above copyright
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  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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 #ifndef WebGLRenderingContextBase_h
 #define WebGLRenderingContextBase_h
 
+#include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/html/canvas/CanvasRenderingContext.h"
 #include "core/html/canvas/WebGLExtensionName.h"
 #include "core/html/canvas/WebGLGetInfo.h"
 #include "core/page/Page.h"
 #include "platform/Timer.h"
 #include "platform/graphics/GraphicsTypes3D.h"
 #include "platform/graphics/ImageBuffer.h"
 #include "platform/graphics/gpu/Extensions3DUtil.h"
 #include "platform/graphics/gpu/WebGLImageConversion.h"
@@ skipping 47 matching lines @@
 class WebGLShader;
 class WebGLShaderPrecisionFormat;
 class WebGLSharedObject;
 class WebGLTexture;
 class WebGLUniformLocation;
 class WebGLVertexArrayObjectOES;
 
 class WebGLRenderingContextLostCallback;
 class WebGLRenderingContextErrorMessageCallback;
 
-class WebGLRenderingContextBase : public CanvasRenderingContext, public ActiveDOMObject, private Page::MultisamplingChangedObserver {
+class WebGLRenderingContextBase: public ScriptWrappable, public CanvasRenderingContext, public ActiveDOMObject, private Page::MultisamplingChangedObserver {
 public:
     virtual ~WebGLRenderingContextBase();
 
     virtual bool is3d() const OVERRIDE { return true; }
     virtual bool isAccelerated() const OVERRIDE { return true; }
     virtual unsigned version() const = 0;
     virtual String contextName() const = 0;
     virtual void registerContextExtensions() = 0;
 
     static unsigned getWebGLVersion(const CanvasRenderingContext*);
@@ skipping 807 matching lines @@
     // If the vector is empty, return the maximum allowed active context number.
     static size_t oldestContextIndex();
     static IntSize oldestContextSize();
 };
 
 DEFINE_TYPE_CASTS(WebGLRenderingContextBase, CanvasRenderingContext, context, context->is3d(), context.is3d());
 
 } // namespace WebCore
 
 #endif // WebGLRenderingContextBase_h