1// Copyright 2013 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "ash/session/session_state_observer.h" 6 7#include "ash/session/session_state_delegate.h" 8#include "ash/shell.h" 9 10namespace ash { 11 12ScopedSessionStateObserver::ScopedSessionStateObserver( 13 ash::SessionStateObserver* observer) 14 : observer_(observer) { 15 ash::Shell::GetInstance()->session_state_delegate()->AddSessionStateObserver( 16 observer_); 17} 18 19ScopedSessionStateObserver::~ScopedSessionStateObserver() { 20 ash::Shell::GetInstance() 21 ->session_state_delegate() 22 ->RemoveSessionStateObserver(observer_); 23} 24 25} // namespace ash 26