Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/background/scheduler.h

-// Copyright 2016 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_OFFLINE_PAGES_BACKGROUND_SCHEDULER_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_SCHEDULER_H_
-
-namespace offline_pages {
-
-// Interface of a class responsible for scheduling a task to initiate
-// processing of background offlining requests upon select system conditions
-// (such as having a network connection).
-class Scheduler {
- public:
-  // Defines a set of system conditions to trigger background processing.
-  struct TriggerConditions {
-    TriggerConditions(bool power, int battery, bool unmetered)
-        : require_power_connected(power),
-          minimum_battery_percentage(battery),
-          require_unmetered_network(unmetered) {}
-    bool require_power_connected;
-    int minimum_battery_percentage;
-    bool require_unmetered_network;
-  };
-
-  Scheduler() {}
-  virtual ~Scheduler() {}
-
-  // Schedules the triggering of a task subject to |trigger_conditions|.
-  // This may overwrite any previous scheduled task with a new one for
-  // these conditions. That is, only one set of triggering conditions
-  // is scheduled at a time.
-  virtual void Schedule(const TriggerConditions& trigger_conditions) = 0;
-
-  // Schedules the triggering of a task in case Chromium is killed,
-  // so we can continue processing background download requests.  This will
-  // not overwrite existing tasks.
-  virtual void BackupSchedule(const TriggerConditions& trigger_conditions,
-                              long delay_in_seconds) = 0;
-
-  // Unschedules the currently scheduled task, if any.
-  virtual void Unschedule() = 0;
-};
-
-}  // namespace offline_pages
-
-#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_SCHEDULER_H_