chrome: Cleanup class/struct forward declarations

chrome/browser/ui/browser.h

 // Copyright (c) 2012 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_UI_BROWSER_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 45 matching lines @@
 #include "extensions/browser/extension_registry_observer.h"
 #endif
 
 class BrowserContentSettingBubbleModelDelegate;
 class BrowserInstantController;
 class BrowserSyncedWindowDelegate;
 class BrowserToolbarModelDelegate;
 class BrowserLiveTabContext;
 class BrowserWindow;
 class FindBarController;
-class PrefService;
 class Profile;
 class ScopedKeepAlive;
 class SearchDelegate;
 class SearchModel;
 class StatusBubble;
 class TabStripModel;
 class TabStripModelDelegate;
 class ValidationMessageBubble;
-struct WebApplicationInfo;
 
 namespace chrome {
 class BrowserCommandController;
 class FastUnloadController;
 class UnloadController;
 }
 
 namespace content {
-class NavigationController;
 class PageState;
 class SessionStorageNamespace;
 }
 
 namespace extensions {
 class HostedAppBrowserController;
 class Extension;
 class ExtensionRegistry;
 class WindowController;
 }
 
 namespace gfx {
 class Image;
 class Point;
 }
 
 namespace ui {
 struct SelectedFileInfo;
-class WebDialogDelegate;
 }
 
 namespace web_modal {
 class WebContentsModalDialogHost;
 }
 
 class Browser : public TabStripModelObserver,
                 public content::WebContentsDelegate,
                 public CoreTabHelperDelegate,
                 public SearchTabHelperDelegate,
@@ skipping 897 matching lines @@
   // The following factory is used for chrome update coalescing.
   base::WeakPtrFactory<Browser> chrome_updater_factory_;
 
   // The following factory is used to close the frame at a later time.
   base::WeakPtrFactory<Browser> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_