Moved the majority of WebGL functionality into WebGLRenderingContextBase

Source/core/html/canvas/WebGLContextObject.h

Index: Source/core/html/canvas/WebGLContextObject.h
diff --git a/Source/core/html/canvas/WebGLContextObject.h b/Source/core/html/canvas/WebGLContextObject.h
index 1e4d29657542e6edad0615290fffeb2f6e308a98..a4acf551a4ed519d09fca1261d8b8398029ee147 100644
--- a/Source/core/html/canvas/WebGLContextObject.h
+++ b/Source/core/html/canvas/WebGLContextObject.h
@@ -31,17 +31,17 @@
 namespace WebCore {
 
 class GraphicsContext3D;
-class WebGLRenderingContext;
+class WebGLRenderingContextBase;
 
 // WebGLContextObject the base class for objects that are owned by a specific
-// WebGLRenderingContext.
+// WebGLRenderingContextBase.
 class WebGLContextObject : public WebGLObject {
 public:
     virtual ~WebGLContextObject();
 
-    WebGLRenderingContext* context() const { return m_context; }
+    WebGLRenderingContextBase* context() const { return m_context; }
 
-    virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContext* context) const
+    virtual bool validate(const WebGLContextGroup*, const WebGLRenderingContextBase* context) const
     {
         return context == m_context;
     }
@@ -49,7 +49,7 @@ public:
     void detachContext();
 
 protected:
-    WebGLContextObject(WebGLRenderingContext*);
+    WebGLContextObject(WebGLRenderingContextBase*);
 
     virtual bool hasGroupOrContext() const
     {
@@ -59,7 +59,7 @@ protected:
     virtual GraphicsContext3D* getAGraphicsContext3D() const;
 
 private:
-    WebGLRenderingContext* m_context;
+    WebGLRenderingContextBase* m_context;
 };
 
 } // namespace WebCore