Move views::Accelerator to ui in order to use it from aura code.

views/controls/menu/menu_item_view.cc

 // Copyright (c) 2011 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_item_view.h"
 
 #include "base/i18n/case_conversion.h"
 #include "base/stl_util.h"
 #include "base/utf_string_conversions.h"
 #include "grit/ui_strings.h"
@@ skipping 753 matching lines @@
 
 string16 MenuItemView::GetAcceleratorText() {
   if (id() == kEmptyMenuItemViewID) {
     // Don't query the delegate for menus that represent no children.
     return string16();
   }
 
   if(!MenuConfig::instance().show_accelerators)
     return string16();
 
-  Accelerator accelerator;
+  ui::Accelerator accelerator;
   return (GetDelegate() &&
           GetDelegate()->GetAccelerator(GetCommand(), &accelerator)) ?
       accelerator.GetShortcutText() : string16();
 }
 
 bool MenuItemView::IsContainer() const {
   // Let the first child take over |this| when we only have one child and no
   // title.  Note that what child_count() returns is the number of children,
   // not the number of menu items.
   return child_count() == 1 && title_.empty();
 }
 
 }  // namespace views