Makes it so child views of menuitemview can be traversed with the

views/controls/menu/menu_controller.h

 // Copyright (c) 2010 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 VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_
 #define VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_
 
 #include "build/build_config.h"
 
 #include <list>
@@ skipping 185 matching lines @@
   bool OnKeyDown(int key_code, const MSG& msg);
 #else
   bool OnKeyDown(int key_code);
 #endif
 
   // Creates a MenuController. If blocking is true, Run blocks the caller
   explicit MenuController(bool blocking);
 
   ~MenuController();
 
+  // If there is a hot tracked view AcceleratorPressed is invoked on it and
+  // true is returned.
+  bool SendAcceleratorToHotTrackedView();
+
   void UpdateInitialLocation(const gfx::Rect& bounds,
                              MenuItemView::AnchorPosition position);
 
   // Invoked when the user accepts the selected item. This is only used
   // when blocking. This schedules the loop to quit.
   void Accept(MenuItemView* item, int mouse_event_flags);
 
   bool ShowSiblingMenu(SubmenuView* source, const MouseEvent& e);
 
   // Closes all menus, including any menus of nested invocations of Run.
@@ skipping 196 matching lines @@
   scoped_ptr<MenuScrollTask> scroll_task_;
 
   MenuButton* menu_button_;
 
   DISALLOW_COPY_AND_ASSIGN(MenuController);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_MENU_MENU_CONTROLLER_H_