Move (most of) chrome/browser/drive into components/drive/service.

chrome/browser/drive/drive_notification_manager.h

-// Copyright 2013 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_DRIVE_DRIVE_NOTIFICATION_MANAGER_H_
-#define CHROME_BROWSER_DRIVE_DRIVE_NOTIFICATION_MANAGER_H_
-
-#include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
-#include "base/timer/timer.h"
-#include "chrome/browser/drive/drive_notification_observer.h"
-#include "components/invalidation/public/invalidation_handler.h"
-#include "components/keyed_service/core/keyed_service.h"
-
-class ProfileSyncService;
-
-namespace invalidation {
-class InvalidationService;
-}
-
-namespace drive {
-
-// Informs observers when they should check Google Drive for updates.
-// Conditions under which updates should be searched:
-// 1. XMPP invalidation is received from Google Drive.
-// 2. Polling timer counts down.
-class DriveNotificationManager : public KeyedService,
-                                 public syncer::InvalidationHandler {
- public:
-  explicit DriveNotificationManager(
-      invalidation::InvalidationService* invalidation_service);
-  ~DriveNotificationManager() override;
-
-  // KeyedService override.
-  void Shutdown() override;
-
-  // syncer::InvalidationHandler implementation.
-  void OnInvalidatorStateChange(syncer::InvalidatorState state) override;
-  void OnIncomingInvalidation(
-      const syncer::ObjectIdInvalidationMap& invalidation_map) override;
-  std::string GetOwnerName() const override;
-
-  void AddObserver(DriveNotificationObserver* observer);
-  void RemoveObserver(DriveNotificationObserver* observer);
-
-  // True when XMPP notification is currently enabled.
-  bool push_notification_enabled() const {
-    return push_notification_enabled_;
-  }
-
-  // True when XMPP notification has been registered.
-  bool push_notification_registered() const {
-    return push_notification_registered_;
-  }
-
- private:
-  enum NotificationSource {
-    NOTIFICATION_XMPP,
-    NOTIFICATION_POLLING,
-  };
-
-  // Restarts the polling timer. Used for polling-based notification.
-  void RestartPollingTimer();
-
-  // Notifies the observers that it's time to check for updates.
-  // |source| indicates where the notification comes from.
-  void NotifyObserversToUpdate(NotificationSource source);
-
-  // Registers for Google Drive invalidation notifications through XMPP.
-  void RegisterDriveNotifications();
-
-  // Returns a string representation of NotificationSource.
-  static std::string NotificationSourceToString(NotificationSource source);
-
-  invalidation::InvalidationService* invalidation_service_;
-  base::ObserverList<DriveNotificationObserver> observers_;
-
-  // True when Drive File Sync Service is registered for Drive notifications.
-  bool push_notification_registered_;
-  // True if the XMPP-based push notification is currently enabled.
-  bool push_notification_enabled_;
-  // True once observers are notified for the first time.
-  bool observers_notified_;
-
-  // The timer is used for polling based notification. XMPP should usually be
-  // used but notification is done per polling when XMPP is not working.
-  base::Timer polling_timer_;
-
-  // Note: This should remain the last member so it'll be destroyed and
-  // invalidate its weak pointers before any other members are destroyed.
-  base::WeakPtrFactory<DriveNotificationManager> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(DriveNotificationManager);
-};
-
-}  // namespace drive
-
-#endif  // CHROME_BROWSER_DRIVE_DRIVE_NOTIFICATION_MANAGER_H_