Rename the aura_shell namespace to ash

ash/test/test_activation_delegate.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/test/test_activation_delegate.h"
 
 #include "ash/wm/window_util.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
 
-namespace aura_shell {
+namespace ash {
 namespace test {
 
 ////////////////////////////////////////////////////////////////////////////////
 // TestActivationDelegate
 
 TestActivationDelegate::TestActivationDelegate()
     : window_(NULL),
       window_was_active_(false),
       activate_(true),
       activated_count_(0),
@@ skipping 21 matching lines @@
 }
 void TestActivationDelegate::OnActivated() {
   activated_count_++;
 }
 void TestActivationDelegate::OnLostActive() {
   if (lost_active_count_++ == 0)
     window_was_active_ = IsActiveWindow(window_);
 }
 
 }  // namespace test
-}  // namespace aura_shell
+}  // namespace ash