Fixes possible crash in showing bookmark menu. The problem occurred...

views/controls/menu/menu_item_view.h

Index: views/controls/menu/menu_item_view.h
===================================================================
--- views/controls/menu/menu_item_view.h	(revision 31560)
+++ views/controls/menu/menu_item_view.h	(working copy)
@@ -218,6 +218,9 @@
     has_icons_ = has_icons;
   }
 
+  // Returns the descendant with the specified command.
+  MenuItemView* GetMenuItemByID(int id);
+
  protected:
   // Creates a MenuItemView. This is used by the various AddXXX methods.
   MenuItemView(MenuItemView* parent, int command, Type type);
@@ -240,9 +243,6 @@
                                        const SkBitmap& icon,
                                        Type type);
 
-  // Returns the descendant with the specified command.
-  MenuItemView* GetDescendantByID(int id);
-
   // Invoked by the MenuController when the menu closes as the result of
   // drag and drop run.
   void DropMenuClosed(bool notify_delegate);