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 5b8c1d04bb31f79fbcadde37a5bfc896a661163f..fdc04ae749d2966be0d24e0b594f1324783109cf 100644
--- a/Source/core/html/canvas/WebGLCompressedTextureS3TC.h
+++ b/Source/core/html/canvas/WebGLCompressedTextureS3TC.h
@@ -36,15 +36,15 @@ class WebGLTexture;
 
 class WebGLCompressedTextureS3TC : 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* getExtensionName();
 
     virtual ~WebGLCompressedTextureS3TC();
     virtual ExtensionName getName() const;
 
 private:
-    WebGLCompressedTextureS3TC(WebGLRenderingContext*);
+    WebGLCompressedTextureS3TC(WebGLRenderingContextBase*);
 };
 
 } // namespace WebCore