|  | // Copyright 2014 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 BASE_MESSAGE_LOOP_TIMER_SLACK_H_ | 
|  | #define BASE_MESSAGE_LOOP_TIMER_SLACK_H_ | 
|  |  | 
|  | namespace base { | 
|  |  | 
|  | // Amount of timer slack to use for delayed timers.  Increasing timer slack | 
|  | // allows the OS to coalesce timers more effectively. | 
|  | enum TimerSlack { | 
|  | // Lowest value for timer slack allowed by OS. | 
|  | TIMER_SLACK_NONE, | 
|  |  | 
|  | // Maximal value for timer slack allowed by OS. | 
|  | TIMER_SLACK_MAXIMUM | 
|  | }; | 
|  |  | 
|  | }  // namespace base | 
|  |  | 
|  | #endif  // BASE_MESSAGE_LOOP_TIMER_SLACK_H_ |