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

chrome/browser/extensions/extension_process_manager.h

 // 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_PROCESS_MANAGER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_PROCESS_MANAGER_H_
 #pragma once
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/ref_counted.h"
 #include "chrome/common/notification_registrar.h"
 #include "chrome/common/view_types.h"
 
 class Browser;
 class BrowsingInstance;
 class Extension;
 class ExtensionHost;
-#if defined(TOOLKIT_VIEWS)
-class ExtensionView;
-#endif
 class GURL;
 class Profile;
 class RenderProcessHost;
 class SiteInstance;
 
 // Manages dynamic state of running Chromium extensions.  There is one instance
 // of this class per Profile (including OTR).
 class ExtensionProcessManager : public NotificationObserver {
  public:
   explicit ExtensionProcessManager(Profile* profile);
@@ skipping 86 matching lines @@
   scoped_refptr<BrowsingInstance> browsing_instance_;
 
   // A map of extension ID to the render_process_id that the extension lives in.
   typedef std::map<std::string, int> ProcessIDMap;
   ProcessIDMap process_ids_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionProcessManager);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_PROCESS_MANAGER_H_