Clean up forward declarations in Source/web

Source/web/ExternalPopupMenu.h

 /*
  * Copyright (C) 2010 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 22 matching lines @@
 
 #include "platform/PopupMenu.h"
 #include "platform/Timer.h"
 #include "public/platform/WebCanvas.h"
 #include "public/platform/WebScrollbar.h"
 #include "public/web/WebExternalPopupMenuClient.h"
 
 namespace blink {
 
 class FloatQuad;
-class IntRect;
 class IntSize;
 class LocalFrame;
 class PopupMenuClient;
 class WebExternalPopupMenu;
 class WebMouseEvent;
 class WebViewImpl;
 struct WebPopupMenuInfo;
 
 // The ExternalPopupMenu connects the actual implementation of the popup menu
 // to the WebCore popup menu.
@@ skipping 32 matching lines @@
     WebViewImpl& m_webView;
     OwnPtr<WebMouseEvent> m_syntheticEvent;
     Timer<ExternalPopupMenu> m_dispatchEventTimer;
     // The actual implementor of the show menu.
     WebExternalPopupMenu* m_webExternalPopupMenu;
 };
 
 } // namespace blink
 
 #endif // ExternalPopupMenu_h