Rename the aura_shell namespace to ash

ash/launcher/launcher.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_H_
 #define ASH_LAUNCHER_LAUNCHER_H_
 #pragma once
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/aura/window_observer.h"
 #include "ash/ash_export.h"
 
 namespace aura {
 class Window;
 }
 
 namespace views {
 class Widget;
 }
 
-namespace aura_shell {
+namespace ash {
 
 class LauncherModel;
 
 class ASH_EXPORT Launcher : public aura::WindowObserver {
  public:
   explicit Launcher(aura::Window* window_container);
   ~Launcher();
 
   // Sets the width of the status area.
   void SetStatusWidth(int width);
@@ skipping 27 matching lines @@
   // The set of windows we know about. The boolean indicates whether we've asked
   // the delegate if the window should added to the launcher.
   WindowMap known_windows_;
 
   // Contents view of the widget. Houses the LauncherView.
   DelegateView* delegate_view_;
 
   DISALLOW_COPY_AND_ASSIGN(Launcher);
 };
 
-}  // namespace aura_shell
+}  // namespace ash
 
 #endif  // ASH_LAUNCHER_LAUNCHER_H_