Made MenuController handle dynamic labels.

chrome/browser/app_menu_model.h

 // Copyright (c) 2009 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_APP_MENU_MODEL_H_
 #define CHROME_BROWSER_APP_MENU_MODEL_H_
 
 #include "app/menus/simple_menu_model.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/user_data_manager.h"
 
 class Browser;
 
 // A menu model that builds the contents of the app menu. This menu has only
 // one level (no submenus).
 class AppMenuModel : public menus::SimpleMenuModel {
  public:
   explicit AppMenuModel(menus::SimpleMenuModel::Delegate* delegate,
                         Browser* browser);
   virtual ~AppMenuModel();
 
+  // Override this to handle the sync menu item (whose label is
+  // updated dynamically).
+  virtual bool IsLabelDynamicAt(int index) const;
+  virtual string16 GetLabelAt(int index) const;
+
  private:
   void Build();
   void BuildProfileSubMenu();
 
+  string16 GetSyncMenuLabel() const;
+  bool IsSyncItem(int index) const;
+
   // Contents of the profiles menu to populate with profile names.
   scoped_ptr<menus::SimpleMenuModel> profiles_menu_contents_;
 
   Browser* browser_;  // weak
 
+  bool sync_item_enabled_;
+  int sync_item_index_;  // -1 if sync_item_enabled_ is false.
+
   DISALLOW_COPY_AND_ASSIGN(AppMenuModel);
 };
 
 #endif  // CHROME_BROWSER_APP_MENU_MODEL_H_