|  | // Copyright 2017 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 CHROME_BROWSER_OFFLINE_PAGES_PREFETCH_PREFETCH_BACKGROUND_TASK_SCHEDULER_H_ | 
|  | #define CHROME_BROWSER_OFFLINE_PAGES_PREFETCH_PREFETCH_BACKGROUND_TASK_SCHEDULER_H_ | 
|  |  | 
|  | namespace offline_pages { | 
|  |  | 
|  | class PrefetchBackgroundTaskScheduler { | 
|  | public: | 
|  | // API for interacting with BackgroundTaskScheduler from native. | 
|  | // Schedules the default 'NWake' prefetching task. | 
|  | // |additional_delay_seconds| is relative to the default 15 minute delay. | 
|  | // Implemented in platform-specific object files. | 
|  | static void Schedule(int additional_delay_seconds); | 
|  |  | 
|  | // Same as |Schedule| but adapted to when limitless prefetching is enabled so | 
|  | // that less restrictions are applied to the scheduling of the background | 
|  | // task. | 
|  | static void ScheduleLimitless(int additional_delay_seconds); | 
|  |  | 
|  | // Cancels the default 'NWake' prefetching task. | 
|  | // Implemented in platform-specific object files. | 
|  | static void Cancel(); | 
|  | }; | 
|  |  | 
|  | }  // namespace offline_pages | 
|  |  | 
|  | #endif  // CHROME_BROWSER_OFFLINE_PAGES_PREFETCH_PREFETCH_BACKGROUND_TASK_SCHEDULER_H_ |