Eliminate ash::internal namespace

ash/test/test_shell_delegate.cc

 // Copyright (c) 2012 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_shell_delegate.h"
 
 #include <limits>
 
 #include "ash/default_accessibility_delegate.h"
 #include "ash/gpu_support_stub.h"
@@ skipping 102 matching lines @@
   return new TestUserWallpaperDelegate();
 }
 
 SessionStateDelegate* TestShellDelegate::CreateSessionStateDelegate() {
   DCHECK(!test_session_state_delegate_);
   test_session_state_delegate_ = new TestSessionStateDelegate();
   return test_session_state_delegate_;
 }
 
 AccessibilityDelegate* TestShellDelegate::CreateAccessibilityDelegate() {
-  return new internal::DefaultAccessibilityDelegate();
+  return new DefaultAccessibilityDelegate();
 }
 
 NewWindowDelegate* TestShellDelegate::CreateNewWindowDelegate() {
   return new NewWindowDelegateImpl;
 }
 
 MediaDelegate* TestShellDelegate::CreateMediaDelegate() {
   return new MediaDelegateImpl;
 }
 
@@ skipping 16 matching lines @@
 base::string16 TestShellDelegate::GetProductName() const {
   return base::string16();
 }
 
 TestSessionStateDelegate* TestShellDelegate::test_session_state_delegate() {
   return test_session_state_delegate_;
 }
 
 }  // namespace test
 }  // namespace ash