1 // Copyright (c) 2012 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 #ifndef ASH_SYSTEM_USER_USER_OBSERVER_H_ 6 #define ASH_SYSTEM_USER_USER_OBSERVER_H_ 7 8 #include "ash/ash_export.h" 9 10 namespace ash { 11 12 class ASH_EXPORT UserObserver { 13 public: ~UserObserver()14 virtual ~UserObserver() {} 15 16 // A user got updated / changed. 17 virtual void OnUserUpdate() = 0; 18 19 // A user was added to the existing session. 20 virtual void OnUserAddedToSession() = 0; 21 }; 22 23 } // namespace ash 24 25 #endif // ASH_SYSTEM_USER_USER_OBSERVER_H_ 26