Eliminate ash::internal namespace

ash/system/chromeos/session/logout_confirmation_controller.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/logout_confirmation_controller.h"
 
 #include "ash/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/system/chromeos/session/logout_confirmation_dialog.h"
 #include "base/location.h"
 #include "base/time/default_tick_clock.h"
 #include "base/time/tick_clock.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
-namespace internal {
 
 LogoutConfirmationController::LogoutConfirmationController(
     const base::Closure& logout_closure)
     : clock_(new base::DefaultTickClock),
       logout_closure_(logout_closure),
       dialog_(NULL),
       logout_timer_(false, false) {
   if (Shell::HasInstance())
     Shell::GetInstance()->AddShellObserver(this);
 }
@@ skipping 49 matching lines @@
   logout_timer_.Stop();
   logout_closure_.Run();
 }
 
 void LogoutConfirmationController::OnDialogClosed() {
   logout_time_ = base::TimeTicks();
   dialog_ = NULL;
   logout_timer_.Stop();
 }
 
-}  // namespace internal
 }  // namespace ash