Eliminate ash::internal namespace

ash/shell/shell_delegate_impl.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/shell/shell_delegate_impl.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/default_accessibility_delegate.h"
 #include "ash/default_user_wallpaper_delegate.h"
 #include "ash/gpu_support_stub.h"
@@ skipping 121 matching lines @@
 
 ash::UserWallpaperDelegate* ShellDelegateImpl::CreateUserWallpaperDelegate() {
   return new DefaultUserWallpaperDelegate();
 }
 
 ash::SessionStateDelegate* ShellDelegateImpl::CreateSessionStateDelegate() {
   return new SessionStateDelegateStub;
 }
 
 ash::AccessibilityDelegate* ShellDelegateImpl::CreateAccessibilityDelegate() {
-  return new internal::DefaultAccessibilityDelegate;
+  return new DefaultAccessibilityDelegate;
 }
 
 ash::NewWindowDelegate* ShellDelegateImpl::CreateNewWindowDelegate() {
   return new NewWindowDelegateImpl;
 }
 
 ash::MediaDelegate* ShellDelegateImpl::CreateMediaDelegate() {
   return new MediaDelegateImpl;
 }
 
@@ skipping 12 matching lines @@
   // Real GPU support depends on src/content, so just use a stub.
   return new GPUSupportStub;
 }
 
 base::string16 ShellDelegateImpl::GetProductName() const {
   return base::string16();
 }
 
 }  // namespace shell
 }  // namespace ash