Rename the aura_shell namespace to ash

ash/wm/activation_controller.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_WM_ACTIVATION_CONTROLLER_H_
 #define ASH_WM_ACTIVATION_CONTROLLER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/aura/client/activation_client.h"
 #include "ui/aura/root_window_observer.h"
 #include "ui/aura/window_observer.h"
 #include "ash/ash_export.h"
 
-namespace aura_shell {
+namespace ash {
 namespace internal {
 
 // Exported for unit tests.
 class ASH_EXPORT ActivationController
     : public aura::client::ActivationClient,
       public aura::WindowObserver,
       public aura::RootWindowObserver {
  public:
   ActivationController();
   virtual ~ActivationController();
@@ skipping 37 matching lines @@
   // For tests that are not running with a Shell instance,
   // ActivationController's attempts to locate the next active window in
   // GetTopmostWindowToActivate() will crash, so we provide this way for such
   // tests to specify a default container.
   aura::Window* default_container_for_test_;
 
   DISALLOW_COPY_AND_ASSIGN(ActivationController);
 };
 
 }  // namespace internal
-}  // namespace aura_shell
+}  // namespace ash
 
 #endif  // ASH_WM_ACTIVATION_CONTROLLER_H_