Eliminate ash::internal namespace

ash/system/chromeos/power/video_activity_notifier.cc

 // 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.
 
 #include "ash/system/chromeos/power/video_activity_notifier.h"
 
 #include "ash/shell.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager_client.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Minimum number of seconds between notifications.
 const int kNotifyIntervalSec = 5;
 
 }  // namespace
 
 VideoActivityNotifier::VideoActivityNotifier(VideoDetector* detector)
     : detector_(detector),
       screen_is_locked_(false) {
@@ skipping 16 matching lines @@
     chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->
         NotifyVideoActivity(is_fullscreen);
     last_notify_time_ = now;
   }
 }
 
 void VideoActivityNotifier::OnLockStateChanged(bool locked) {
   screen_is_locked_ = locked;
 }
 
-}  // namespace internal
 }  // namespace ash