Split CustomElementRegistry into a registration context and a registry.

Source/bindings/v8/CustomElementWrapper.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 21 matching lines @@
 #define CustomElementWrapper_h
 
 #include "wtf/PassRefPtr.h"
 #include <v8.h>
 
 namespace WebCore {
 
 class HTMLElement;
 class SVGElement;
 
-template<typename ElementType>
+template<typename ElementType, typename WrapperType>
 class CustomElementWrapper {
 private:
     CustomElementWrapper();
 
     friend v8::Handle<v8::Object> createV8HTMLWrapper(HTMLElement*, v8::Handle<v8::Object>, v8::Isolate*);
     friend v8::Handle<v8::Object> createV8SVGWrapper(SVGElement*, v8::Handle<v8::Object>, v8::Isolate*);
 
     static v8::Handle<v8::Object> wrap(PassRefPtr<ElementType>, v8::Handle<v8::Object> creationContext, v8::Isolate*, v8::Handle<v8::Object> (*createSpecificWrapper)(ElementType* element, v8::Handle<v8::Object> creationContext, v8::Isolate*));
 };
 
 } // namespace WebCore
 
 #endif // CustomElementWrapper_h