Eliminate ash::internal namespace

ash/system/chromeos/enterprise/tray_enterprise.cc

 // 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.
 
 #include "ash/system/chromeos/enterprise/tray_enterprise.h"
 
 #include "ash/shell.h"
 #include "ash/system/chromeos/label_tray_view.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/system/user/login_status.h"
 #include "base/logging.h"
 #include "grit/ash_resources.h"
 
 namespace ash {
-namespace internal {
 
 TrayEnterprise::TrayEnterprise(SystemTray* system_tray)
     : SystemTrayItem(system_tray),
       tray_view_(NULL) {
   Shell::GetInstance()->system_tray_notifier()->
       AddEnterpriseDomainObserver(this);
 }
 
 TrayEnterprise::~TrayEnterprise() {
   Shell::GetInstance()->system_tray_notifier()->
@@ skipping 23 matching lines @@
 }
 
 void TrayEnterprise::OnEnterpriseDomainChanged() {
   UpdateEnterpriseMessage();
 }
 
 void TrayEnterprise::OnViewClicked(views::View* sender) {
   Shell::GetInstance()->system_tray_delegate()->ShowEnterpriseInfo();
 }
 
-} // namespace internal
 } // namespace ash