Eliminate ash::internal namespace

ash/system/chromeos/power/user_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/user_activity_notifier.h"
 
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "ui/events/event.h"
 #include "ui/events/event_constants.h"
 #include "ui/events/keycodes/keyboard_codes_posix.h"
 #include "ui/wm/core/user_activity_detector.h"
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // Minimum number of seconds between notifications.
 const int kNotifyIntervalSec = 5;
 
 // Returns a UserActivityType describing |event|.
 power_manager::UserActivityType GetUserActivityTypeForEvent(
     const ui::Event* event) {
   if (!event || event->type() != ui::ET_KEY_PRESSED)
     return power_manager::USER_ACTIVITY_OTHER;
@@ skipping 30 matching lines @@
   // InSeconds() truncates rather than rounding, so it's fine for this
   // comparison.
   if (last_notify_time_.is_null() ||
       (now - last_notify_time_).InSeconds() >= kNotifyIntervalSec) {
     chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->
         NotifyUserActivity(GetUserActivityTypeForEvent(event));
     last_notify_time_ = now;
   }
 }
 
-}  // namespace internal
 }  // namespace ash