Moved the majority of WebGL functionality into WebGLRenderingContextBase

Source/core/html/canvas/ANGLEInstancedArrays.h

Index: Source/core/html/canvas/ANGLEInstancedArrays.h
diff --git a/Source/core/html/canvas/ANGLEInstancedArrays.h b/Source/core/html/canvas/ANGLEInstancedArrays.h
index e5ad34e4bb27209148f2bb2835615c2dbf439bc1..7c96cc2d91bd8fa4da5d74f50b594145db824ca9 100644
--- a/Source/core/html/canvas/ANGLEInstancedArrays.h
+++ b/Source/core/html/canvas/ANGLEInstancedArrays.h
@@ -37,23 +37,23 @@
 
 namespace WebCore {
 
-class WebGLRenderingContext;
+class WebGLRenderingContextBase;
 
 class ANGLEInstancedArrays : public WebGLExtension, public ScriptWrappable {
 public:
-    static PassRefPtr<ANGLEInstancedArrays> create(WebGLRenderingContext*);
-    static bool supported(WebGLRenderingContext*);
+    static PassRefPtr<ANGLEInstancedArrays> create(WebGLRenderingContextBase*);
+    static bool supported(WebGLRenderingContextBase*);
     static const char* getExtensionName();
 
     virtual ~ANGLEInstancedArrays();
-    virtual ExtensionName getName() const;
+    virtual WebGLExtensionName getName() const;
 
     void drawArraysInstancedANGLE(GC3Denum mode, GC3Dint first, GC3Dsizei count, GC3Dsizei primcount);
     void drawElementsInstancedANGLE(GC3Denum mode, GC3Dsizei count, GC3Denum type, GC3Dintptr offset, GC3Dsizei primcount);
     void vertexAttribDivisorANGLE(GC3Duint index, GC3Duint divisor);
 
 private:
-    ANGLEInstancedArrays(WebGLRenderingContext*);
+    ANGLEInstancedArrays(WebGLRenderingContextBase*);
 };
 
 } // namespace WebCore