Rename the aura_shell namespace to ash

ash/launcher/launcher_view.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 ASH_LAUNCHER_LAUNCHER_VIEW_H_
 #define ASH_LAUNCHER_LAUNCHER_VIEW_H_
 #pragma once
 
 #include <vector>
 
 #include "ash/launcher/launcher_button_host.h"
 #include "ash/launcher/launcher_model_observer.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/widget/widget_delegate.h"
 
 namespace views {
 class BoundsAnimator;
 class ImageButton;
 class MenuRunner;
 }
 
-namespace aura_shell {
+namespace ash {
 
 struct LauncherItem;
 class LauncherModel;
 class ViewModel;
 
 namespace internal {
 
 class LauncherView : public views::WidgetDelegateView,
                      public LauncherModelObserver,
                      public views::ButtonListener,
@@ skipping 105 matching lines @@
 
   // Index |drag_view_| was initially at.
   int start_drag_index_;
 
   scoped_ptr<views::MenuRunner> overflow_menu_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(LauncherView);
 };
 
 }  // namespace internal
-}  // namespace aura_shell
+}  // namespace ash
 
 #endif  // ASH_LAUNCHER_LAUNCHER_VIEW_H_