Remove existingWindowShellWorkaroundWorld

Source/bindings/v8/DOMWrapperWorld.h

 /*
  * Copyright (C) 2009 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 106 matching lines @@
     static PassRefPtr<DOMWrapperWorld> createMainWorld();
     static bool contextHasCorrectPrototype(v8::Handle<v8::Context>);
 
     DOMWrapperWorld(int worldId, int extensionGroup);
 
     const int m_worldId;
     const int m_extensionGroup;
     OwnPtr<DOMDataStore> m_domDataStore;
 
     friend DOMWrapperWorld* mainThreadNormalWorld();
-    friend DOMWrapperWorld* existingWindowShellWorkaroundWorld();
 };
 
 DOMWrapperWorld* mainThreadNormalWorld();
 
-// FIXME: this is a workaround for a problem in ScriptController
-// Do not use this anywhere else!!
-DOMWrapperWorld* existingWindowShellWorkaroundWorld();
-
 } // namespace WebCore
 
 #endif // DOMWrapperWorld_h