Rename the aura_shell namespace to ash

ash/shell/lock_view.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/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/shell/example_factory.h"
 #include "base/utf_string_conversions.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
 
-using aura_shell::Shell;
+using ash::Shell;
 
 namespace ash {
 namespace shell {
 
 class LockView : public views::WidgetDelegateView {
  public:
   LockView() {}
   virtual ~LockView() {}
 
   // Overridden from View:
@@ skipping 29 matching lines @@
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_CONTROL);
   gfx::Size ps = lock_view->GetPreferredSize();
 
   gfx::Size root_window_size = aura::RootWindow::GetInstance()->GetHostSize();
   params.bounds = gfx::Rect((root_window_size.width() - ps.width()) / 2,
                             (root_window_size.height() - ps.height()) / 2,
                             ps.width(), ps.height());
   params.delegate = lock_view;
   widget->Init(params);
   Shell::GetInstance()->GetContainer(
-      aura_shell::internal::kShellWindowId_LockScreenContainer)->
+      ash::internal::kShellWindowId_LockScreenContainer)->
       AddChild(widget->GetNativeView());
   widget->SetContentsView(lock_view);
   widget->Show();
   widget->GetNativeView()->SetName("LockView");
 }
 
 }  // namespace shell
 }  // namespace ash