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: