Eliminate ash::internal namespace

ash/system/chromeos/session/tray_session_length_limit.cc

 // Copyright 2014 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/session/tray_session_length_limit.h"
 
 #include <algorithm>
 
 #include "ash/shelf/shelf_types.h"
 #include "ash/shell.h"
@@ skipping 19 matching lines @@
 #include "ui/message_center/notification.h"
 #include "ui/views/border.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/layout/grid_layout.h"
 #include "ui/views/view.h"
 
 using message_center::Notification;
 
 namespace ash {
-namespace internal {
-
 namespace {
 
 // If the remaining session time falls below this threshold, the user should be
 // informed that the session is about to expire.
 const int kExpiringSoonThresholdInSeconds = 5 * 60;  // 5 minutes.
 
 // Color in which the remaining session time is normally shown.
 const SkColor kRemainingTimeColor = SK_ColorWHITE;
 // Color in which the remaining session time is shown when it is expiring soon.
 const SkColor kRemainingTimeExpiringSoonColor = SK_ColorRED;
@@ skipping 329 matching lines @@
   // Update the tray view last so that it can check whether the notification
   // view is currently visible or not.
   if (tray_view_)
     tray_view_->Update();
 }
 
 bool TraySessionLengthLimit::IsTrayViewVisibleForTest() {
   return tray_view_ && tray_view_->visible();
 }
 
-}  // namespace internal
 }  // namespace ash