alternate ntp: add "Recent Tabs" submenu to wrench menu

chrome/browser/ui/views/wrench_menu.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_VIEWS_WRENCH_MENU_H_
 #define CHROME_BROWSER_UI_VIEWS_WRENCH_MENU_H_
 
 #include <map>
 #include <utility>
 
@@ skipping 78 matching lines @@
   // BaseBookmarkModelObserver overrides:
   virtual void BookmarkModelChanged() OVERRIDE;
 
   // content::NotificationObserver overrides:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
  private:
   class CutCopyPasteView;
+  class RecentTabsMenuModelDelegate;
   class ZoomView;
 
   typedef std::pair<ui::MenuModel*,int> Entry;
   typedef std::map<int,Entry> IDToEntry;
 
   // Populates |parent| with all the child menus in |model|. Recursively invokes
   // |PopulateMenu| for any submenu. |next_id| is incremented for every menu
   // that is created.
   void PopulateMenu(views::MenuItemView* parent,
                     ui::MenuModel* model,
@@ skipping 44 matching lines @@
 
   // Used for managing the bookmark menu items.
   scoped_ptr<BookmarkMenuDelegate> bookmark_menu_delegate_;
 
   // Menu corresponding to IDC_BOOKMARKS_MENU.
   views::MenuItemView* bookmark_menu_;
 
   // Menu corresponding to IDC_FEEDBACK.
   views::MenuItemView* feedback_menu_item_;
 
+  // Used for managing "Recent tabs" menu items.
+  scoped_ptr<RecentTabsMenuModelDelegate> recent_tabs_menu_model_delegate_;
+
   // ID to use for the items representing bookmarks in the bookmark menu.
   int first_bookmark_command_id_;
 
   content::NotificationRegistrar registrar_;
 
   const bool use_new_menu_;
 
   const bool supports_new_separators_;
 
   DISALLOW_COPY_AND_ASSIGN(WrenchMenu);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_WRENCH_MENU_H_