Rename the aura_shell namespace to ash

ash/test/test_activation_delegate.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_TEST_TEST_ACTIVATION_DELEGATE_H_
 #define ASH_TEST_TEST_ACTIVATION_DELEGATE_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "ui/aura/client/activation_delegate.h"
 
 namespace aura {
 class Window;
 }
 
-namespace aura_shell {
+namespace ash {
 namespace test {
 
 // A test ActivationDelegate that can be used to track activation changes for
 // an aura::Window.
 class TestActivationDelegate : public aura::client::ActivationDelegate {
  public:
   TestActivationDelegate();
   explicit TestActivationDelegate(bool activate);
 
   // Associates this delegate with a Window.
@@ skipping 19 matching lines @@
   bool window_was_active_;
   bool activate_;
   int activated_count_;
   int lost_active_count_;
   int should_activate_count_;
 
   DISALLOW_COPY_AND_ASSIGN(TestActivationDelegate);
 };
 
 }  // namespace test
-}  // namespace aura_shell
+}  // namespace ash
 
 #endif  // ASH_TEST_TEST_ACTIVATION_DELEGATE_H_