Eliminate ash::internal namespace

ash/touch/touch_observer_hud.h

 // 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.
 
 #ifndef ASH_TOUCH_TOUCH_OBSERVER_HUD_H_
 #define ASH_TOUCH_TOUCH_OBSERVER_HUD_H_
 
 #include "ash/ash_export.h"
 #include "ash/display/display_controller.h"
 #include "ui/events/event_handler.h"
 #include "ui/gfx/display_observer.h"
 #include "ui/views/widget/widget_observer.h"
 
 #if defined(OS_CHROMEOS)
 #include "ui/display/chromeos/output_configurator.h"
 #endif  // defined(OS_CHROMEOS)
 
 namespace views {
 class Widget;
 }
 
 namespace ash {
-namespace internal {
 
 // An event filter which handles system level gesture events. Objects of this
 // class manage their own lifetime.
 class ASH_EXPORT TouchObserverHUD : public ui::EventHandler,
                                     public views::WidgetObserver,
                                     public gfx::DisplayObserver,
 #if defined(OS_CHROMEOS)
                                     public ui::OutputConfigurator::Observer,
 #endif  // defined(OS_CHROMEOS)
                                     public DisplayController::Observer {
@@ skipping 45 matching lines @@
   friend class TouchHudTestBase;
 
   const int64 display_id_;
   aura::Window* root_window_;
 
   views::Widget* widget_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchObserverHUD);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_TOUCH_TOUCH_OBSERVER_HUD_H_