Rename the aura_shell namespace to ash

ash/app_list/app_list_groups_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 "ash/app_list/app_list_groups_view.h"
 
 #include "ash/app_list/app_list_item_group_model.h"
 #include "ash/app_list/app_list_item_group_view.h"
 #include "ash/app_list/app_list_item_view.h"
 #include "ash/app_list/app_list_model.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/views/animation/bounds_animator.h"
 #include "ui/views/controls/button/text_button.h"
 #include "ui/views/layout/box_layout.h"
 
-namespace aura_shell {
+namespace ash {
 
 namespace {
 
 const SkColor kPageHeaderColor = SkColorSetARGB(0xFF, 0xB2, 0xB2, 0xB2);
 const SkColor kSelectedPageHeaderColor = SK_ColorWHITE;
 
 // Creates page headers view that hosts page title buttons.
 views::View* CreatePageHeader() {
   views::View* header = new views::View;
   header->SetLayoutManager(
@@ skipping 204 matching lines @@
 }
 
 void AppListGroupsView::ListItemsRemoved(int start, int count) {
   Update();
 }
 
 void AppListGroupsView::ListItemsChanged(int start, int count) {
   NOTREACHED();
 }
 
-}  // namespace aura_shell
+}  // namespace ash