Selects last item in a menu when pressing 'up' initially

ui/views/controls/menu/submenu_view.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 UI_VIEWS_CONTROLS_MENU_SUBMENU_VIEW_H_
 #define UI_VIEWS_CONTROLS_MENU_SUBMENU_VIEW_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 72 matching lines @@
   // Scrolls on menu item boundaries.
   void OnGestureEvent(ui::GestureEvent* event) override;
 
   // Overridden from PrefixDelegate.
   int GetRowCount() override;
   int GetSelectedRow() override;
   void SetSelectedRow(int row) override;
   base::string16 GetTextForRow(int row) override;
 
   // Returns true if the menu is showing.
-  bool IsShowing();
+  virtual bool IsShowing();
 
   // Shows the menu at the specified location. Coordinates are in screen
   // coordinates. max_width gives the max width the view should be.
   void ShowAt(Widget* parent, const gfx::Rect& bounds, bool do_capture);
 
   // Resets the bounds of the submenu to |bounds|.
   void Reposition(const gfx::Rect& bounds);
 
   // Closes the menu, destroying the host.
   void Close();
@@ skipping 109 matching lines @@
   float roundoff_error_;
 
   PrefixSelector prefix_selector_;
 
   DISALLOW_COPY_AND_ASSIGN(SubmenuView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_MENU_SUBMENU_VIEW_H_