Rename the aura_shell namespace to ash

chrome/browser/ui/views/aura/app_list/chrome_app_list_item.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_AURA_APP_LIST_CHROME_APP_LIST_ITEM_H_
 #define CHROME_BROWSER_UI_VIEWS_AURA_APP_LIST_CHROME_APP_LIST_ITEM_H_
 #pragma once
 
 #include "ash/app_list/app_list_item_model.h"
 
 // Base class of all chrome app list items. Chrome's AppListViewDelegate assumes
 // all items are derived from this class and calls Activate when an item is
 // activated.
-class ChromeAppListItem : public aura_shell::AppListItemModel {
+class ChromeAppListItem : public ash::AppListItemModel {
  public:
   // Activates the item. |event_flags| holds flags of a mouse/keyboard event
   // associated with this activation.
   virtual void Activate(int event_flags) = 0;
 
  protected:
   virtual ~ChromeAppListItem() {}
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_AURA_APP_LIST_CHROME_APP_LIST_ITEM_H_