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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/wm_shell.h" | |
9 | |
10 namespace ash { | |
11 | |
12 ScopedSessionStateObserver::ScopedSessionStateObserver( | |
13 SessionStateObserver* observer) | |
14 : observer_(observer) { | |
15 WmShell::Get()->GetSessionStateDelegate()->AddSessionStateObserver(observer_); | |
16 } | |
17 | |
18 ScopedSessionStateObserver::~ScopedSessionStateObserver() { | |
19 if (WmShell::Get()) { | |
20 WmShell::Get()->GetSessionStateDelegate()->RemoveSessionStateObserver( | |
21 observer_); | |
22 } | |
23 } | |
24 | |
25 } // namespace ash | |
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