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_state_observer.h" 6 7 #include "ash/session_state_delegate.h" 8 #include "ash/shell.h" 9 10 namespace ash { 11 ScopedSessionStateObserver(ash::SessionStateObserver * observer)12ScopedSessionStateObserver::ScopedSessionStateObserver( 13 ash::SessionStateObserver* observer) : observer_(observer) { 14 ash::Shell::GetInstance()->session_state_delegate()-> 15 AddSessionStateObserver(observer_); 16 } 17 ~ScopedSessionStateObserver()18ScopedSessionStateObserver::~ScopedSessionStateObserver() { 19 ash::Shell::GetInstance()->session_state_delegate()-> 20 RemoveSessionStateObserver(observer_); 21 } 22 23 } // namespace ash 24 25