Moved the majority of WebGL functionality into WebGLRenderingContextBase

Source/core/html/canvas/WebGLCompressedTextureS3TC.h

Index: Source/core/html/canvas/WebGLCompressedTextureS3TC.h
diff --git a/Source/core/html/canvas/WebGLCompressedTextureS3TC.h b/Source/core/html/canvas/WebGLCompressedTextureS3TC.h
index b43b565b55139292b3b3e736b9421175ba8b417c..aaed4a7764c2372bcfe751f88a59afb084324530 100644
--- a/Source/core/html/canvas/WebGLCompressedTextureS3TC.h
+++ b/Source/core/html/canvas/WebGLCompressedTextureS3TC.h
@@ -36,15 +36,15 @@ class WebGLTexture;
 
 class WebGLCompressedTextureS3TC FINAL : public WebGLExtension, public ScriptWrappable {
 public:
-    static PassRefPtr<WebGLCompressedTextureS3TC> create(WebGLRenderingContext*);
-    static bool supported(WebGLRenderingContext*);
+    static PassRefPtr<WebGLCompressedTextureS3TC> create(WebGLRenderingContextBase*);
+    static bool supported(WebGLRenderingContextBase*);
     static const char* extensionName();
 
     virtual ~WebGLCompressedTextureS3TC();
-    virtual ExtensionName name() const OVERRIDE;
+    virtual WebGLExtensionName name() const OVERRIDE;
 
 private:
-    WebGLCompressedTextureS3TC(WebGLRenderingContext*);
+    WebGLCompressedTextureS3TC(WebGLRenderingContextBase*);
 };
 
 } // namespace WebCore