Eliminate ash::internal namespace

ash/system/chromeos/power/tray_power.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_SYSTEM_CHROMEOS_POWER_TRAY_POWER_H_
 #define ASH_SYSTEM_CHROMEOS_POWER_TRAY_POWER_H_
 
 #include "ash/system/chromeos/power/power_status.h"
 #include "ash/system/tray/system_tray_item.h"
 
 class SkBitmap;
 
 namespace gfx {
 class Image;
 class ImageSkia;
 }
 
 namespace message_center {
 class MessageCenter;
 }
 
 namespace ash {
-namespace internal {
-
 namespace tray {
 class PowerNotificationView;
 class PowerTrayView;
 }
 
 class ASH_EXPORT TrayPower : public SystemTrayItem,
                              public PowerStatus::Observer {
  public:
   // Visible for testing.
   enum NotificationState {
@@ skipping 69 matching lines @@
   // Was a USB charger connected the last time OnPowerStatusChanged() was
   // called?
   bool usb_charger_was_connected_;
 
   // Was line power connected the last time onPowerStatusChanged() was called?
   bool line_power_was_connected_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayPower);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_POWER_TRAY_POWER_H_