chromium/components/sync/invalidations/fcm_handler.h

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_SYNC_INVALIDATIONS_FCM_HANDLER_H_
#define COMPONENTS_SYNC_INVALIDATIONS_FCM_HANDLER_H_

#include <optional>
#include <string>

#include "base/containers/circular_deque.h"
#include "base/memory/raw_ptr.h"
#include "base/observer_list.h"
#include "base/sequence_checker.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "components/gcm_driver/gcm_app_handler.h"
#include "components/gcm_driver/instance_id/instance_id.h"
#include "components/keyed_service/core/keyed_service.h"

namespace gcm {
class GCMDriver;
}

namespace instance_id {
class InstanceIDDriver;
}

namespace syncer {

class FCMRegistrationTokenObserver;
class InvalidationsListener;

// This handler is used to register with FCM and to process incoming messages.
class FCMHandler : public gcm::GCMAppHandler { … };

}  // namespace syncer

#endif  // COMPONENTS_SYNC_INVALIDATIONS_FCM_HANDLER_H_