Eliminate ash::internal namespace

ash/system/chromeos/power/power_event_observer.h

 // Copyright 2013 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_POWER_EVENT_OBSERVER_H_
 #define ASH_SYSTEM_CHROMEOS_POWER_POWER_EVENT_OBSERVER_H_
 
 #include "ash/ash_export.h"
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "chromeos/dbus/session_manager_client.h"
 
 namespace ash {
-namespace internal {
 
 // A class that observes power-management-related events.
 class ASH_EXPORT PowerEventObserver
     : public chromeos::PowerManagerClient::Observer,
       public chromeos::SessionManagerClient::Observer {
  public:
   // This class registers/unregisters itself as an observer in ctor/dtor.
   PowerEventObserver();
   virtual ~PowerEventObserver();
 
@@ skipping 10 matching lines @@
   bool screen_locked_;
 
   // If set, called when the lock screen has been shown to confirm that the
   // system is ready to be suspended.
   base::Closure screen_lock_callback_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PowerEventObserver);
 };
 
-}  // namespace internal
 }  // namespace chromeos
 
 #endif  // ASH_SYSTEM_CHROMEOS_POWER_POWER_EVENT_OBSERVER_H_