|  | // Copyright 2015 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. | 
|  |  | 
|  | #ifndef COMPONENTS_COMPONENT_UPDATER_TIMER_H_ | 
|  | #define COMPONENTS_COMPONENT_UPDATER_TIMER_H_ | 
|  |  | 
|  | #include "base/callback.h" | 
|  | #include "base/macros.h" | 
|  | #include "base/threading/thread_checker.h" | 
|  | #include "base/time/time.h" | 
|  | #include "base/timer/timer.h" | 
|  |  | 
|  | namespace component_updater { | 
|  |  | 
|  | class Timer { | 
|  | public: | 
|  | Timer(); | 
|  | ~Timer(); | 
|  |  | 
|  | void Start(base::TimeDelta initial_delay, | 
|  | base::TimeDelta delay, | 
|  | const base::Closure& user_task); | 
|  |  | 
|  | void Stop(); | 
|  |  | 
|  | private: | 
|  | void OnDelay(); | 
|  |  | 
|  | base::ThreadChecker thread_checker_; | 
|  |  | 
|  | base::OneShotTimer timer_; | 
|  |  | 
|  | base::TimeDelta delay_; | 
|  | base::Closure user_task_; | 
|  |  | 
|  | DISALLOW_COPY_AND_ASSIGN(Timer); | 
|  | }; | 
|  |  | 
|  | }  // namespace component_updater | 
|  |  | 
|  | #endif  // COMPONENTS_COMPONENT_UPDATER_TIMER_H_ |