Check if the delegate changed the visibility of child MenuItemViews.

chrome/browser/ui/views/bookmarks/bookmark_context_menu.h

 // Copyright (c) 2011 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_BOOKMARKS_BOOKMARK_CONTEXT_MENU_H_
 #define CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_CONTEXT_MENU_H_
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/ui/bookmarks/bookmark_context_menu_controller.h"
 #include "ui/views/controls/menu/menu_delegate.h"
@@ skipping 43 matching lines @@
     observer_ = observer;
   }
 
   // Sets the PageNavigator.
   void SetPageNavigator(content::PageNavigator* navigator);
 
   // Overridden from views::MenuDelegate:
   virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
   virtual bool IsItemChecked(int command_id) const OVERRIDE;
   virtual bool IsCommandEnabled(int command_id) const OVERRIDE;
+  virtual bool IsCommandVisible(int command_id) const OVERRIDE;
   virtual bool ShouldCloseAllMenusOnExecute(int id) OVERRIDE;
 
   // Overridden from BookmarkContextMenuControllerDelegate:
   virtual void CloseMenu() OVERRIDE;
   virtual void WillExecuteCommand(
       int command_id,
       const std::vector<const BookmarkNode*>& bookmarks) OVERRIDE;
   virtual void DidExecuteCommand(int command_id) OVERRIDE;
 
  private:
@@ skipping 10 matching lines @@
 
   BookmarkContextMenuObserver* observer_;
 
   // Should the menu close when a node is removed.
   bool close_on_remove_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkContextMenu);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_CONTEXT_MENU_H_