Remove obviously unneeded forward declarations in chrome/browser/[abef]*/*.h.

chrome/browser/extensions/extension_dom_ui.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_DOM_UI_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_DOM_UI_H_
 #pragma once
 
 #include <string>
 
 #include "base/scoped_ptr.h"
 #include "chrome/browser/dom_ui/dom_ui.h"
 #include "chrome/browser/extensions/extension_bookmark_manager_api.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
 #include "chrome/browser/favicon_service.h"
 #include "chrome/common/extensions/extension.h"
 
 class ListValue;
 class PrefService;
 class Profile;
-class RefCountedMemory;
 class RenderViewHost;
 class TabContents;
 
 // This class implements DOMUI for extensions and allows extensions to put UI in
 // the main tab contents area.
 class ExtensionDOMUI
     : public DOMUI,
       public ExtensionFunctionDispatcher::Delegate {
  public:
   static const wchar_t kExtensionURLOverrides[];
@@ skipping 62 matching lines @@
 
   void ResetExtensionBookmarkManagerEventRouter();
 
   scoped_ptr<ExtensionFunctionDispatcher> extension_function_dispatcher_;
 
   scoped_ptr<ExtensionBookmarkManagerEventRouter>
       extension_bookmark_manager_event_router_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_DOM_UI_H_