Remove extension group from DOMWrapperWorld.

third_party/WebKit/public/web/WebFrameClient.h

 /*
  * Copyright (C) 2011, 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 557 matching lines @@
   // use for segregated histograms.
   virtual void didObserveLoadingBehavior(WebLoadingBehaviorFlag) {}
 
   // Script notifications ------------------------------------------------
 
   // Notifies that a new script context has been created for this frame.
   // This is similar to didClearWindowObject but only called once per
   // frame context.
   virtual void didCreateScriptContext(WebLocalFrame*,
                                       v8::Local<v8::Context>,
-                                      int extensionGroup,
                                       int worldId) {}
 
   // WebKit is about to release its reference to a v8 context for a frame.
   virtual void willReleaseScriptContext(WebLocalFrame*,
                                         v8::Local<v8::Context>,
                                         int worldId) {}
 
   // Geometry notifications ----------------------------------------------
 
   // The main frame scrolled.
@@ skipping 167 matching lines @@
   // Overwrites the given URL to use an HTML5 embed if possible.
   // An empty URL is returned if the URL is not overriden.
   virtual WebURL overrideFlashEmbedWithHTML(const WebURL& url) {
     return WebURL();
   }
 };
 
 }  // namespace blink
 
 #endif