Fixes possible crash in menus. The crash would happen because we were

views/controls/menu/menu_controller.cc

 // 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.
 
 #include "views/controls/menu/menu_controller.h"
 
 #include "app/l10n_util.h"
 #include "base/i18n/rtl.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
@@ skipping 541 matching lines @@
 
   if (!blocking_run_)
     return;
 
   if (part.type == MenuPart::NONE && ShowSiblingMenu(source, event))
     return;
 
   if (part.type == MenuPart::MENU_ITEM && part.menu) {
     SetSelection(part.menu, SELECTION_OPEN_SUBMENU);
   } else if (!part.is_scroll() && pending_state_.item &&
+             pending_state_.item->GetParentMenuItem() &&
              (!pending_state_.item->HasSubmenu() ||
               !pending_state_.item->GetSubmenu()->IsShowing())) {
     // On exit if the user hasn't selected an item with a submenu, move the
     // selection back to the parent menu item.
     SetSelection(pending_state_.item->GetParentMenuItem(),
                  SELECTION_OPEN_SUBMENU);
   }
 }
 
 void MenuController::OnMouseEntered(SubmenuView* source,
@@ skipping 1263 matching lines @@
 
   MouseEvent release_event(Event::ET_MOUSE_RELEASED, -1, -1, 0);
   // Reset the active_mouse_view_ before sending mouse released. That way if if
   // calls back to use we aren't in a weird state.
   View* active_view = active_mouse_view_;
   active_mouse_view_ = NULL;
   active_view->OnMouseReleased(release_event, true);
 }
 
 }  // namespace views