Move app list from ash to ui.

ui/app_list/app_list_item_model.cc

 // 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.
 
-#include "ash/app_list/app_list_item_model.h"
+#include "ui/app_list/app_list_item_model.h"
 
-#include "ash/app_list/app_list_item_model_observer.h"
+#include "ui/app_list/app_list_item_model_observer.h"
 
-namespace ash {
+namespace app_list {
 
 AppListItemModel::AppListItemModel() : highlighted_(false) {
 }
 
 AppListItemModel::~AppListItemModel() {
 }
 
 void AppListItemModel::SetIcon(const SkBitmap& icon) {
   icon_ = icon;
   FOR_EACH_OBSERVER(AppListItemModelObserver, observers_,
@@ skipping 20 matching lines @@
 }
 
 void AppListItemModel::RemoveObserver(AppListItemModelObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 ui::MenuModel* AppListItemModel::GetContextMenuModel() {
   return NULL;
 }
 
-}  // namespace ash
+}  // namespace app_list