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

views/controls/menu/menu_delegate.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_config.h"
 #include "views/controls/menu/menu_delegate.h"
 
 namespace views {
 
 MenuDelegate::~MenuDelegate() {}
 
 bool MenuDelegate::IsItemChecked(int id) const {
   return false;
 }
 
 string16 MenuDelegate::GetLabel(int id) const {
   return string16();
 }
 
 const gfx::Font& MenuDelegate::GetLabelFont(int id) const {
   return MenuConfig::instance().font;
 }
 
 string16 MenuDelegate::GetTooltipText(int id,
                                       const gfx::Point& screen_loc) const {
   return string16();
 }
 
-bool MenuDelegate::GetAccelerator(int id, Accelerator* accelerator) {
+bool MenuDelegate::GetAccelerator(int id, ui::Accelerator* accelerator) {
   return false;
 }
 
 bool MenuDelegate::ShowContextMenu(MenuItemView* source,
                                    int id,
                                    const gfx::Point& p,
                                    bool is_mouse_gesture) {
   return false;
 }
 
@@ skipping 78 matching lines @@
   return 800;
 }
 
 void MenuDelegate::WillShowMenu(MenuItemView* menu) {
 }
 
 void MenuDelegate::WillHideMenu(MenuItemView* menu) {
 }
 
 }  // namespace views