chromium/components/browser_sync/sync_internals_message_handler.h

// Copyright 2014 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_BROWSER_SYNC_SYNC_INTERNALS_MESSAGE_HANDLER_H_
#define COMPONENTS_BROWSER_SYNC_SYNC_INTERNALS_MESSAGE_HANDLER_H_

#include <memory>
#include <string>
#include <utility>
#include <vector>

#include "base/containers/flat_map.h"
#include "base/containers/span.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observation.h"
#include "base/scoped_observation_traits.h"
#include "base/values.h"
#include "components/sync/engine/events/protocol_event_observer.h"
#include "components/sync/invalidations/invalidations_listener.h"
#include "components/sync/invalidations/sync_invalidations_service.h"
#include "components/sync/service/sync_service.h"
#include "components/sync/service/sync_service_observer.h"

namespace signin {
class IdentityManager;
}  // namespace signin

namespace syncer {
class UserEventService;
struct TypeEntitiesCount;
}  //  namespace syncer

namespace browser_sync {

// Class with the common logic for the chrome://sync-internals page. See also
// ChromeSyncInternalsMessageHandler and IOSSyncInternalsMessageHandler.
class SyncInternalsMessageHandler : public syncer::SyncServiceObserver,
                                    public syncer::ProtocolEventObserver,
                                    public syncer::InvalidationsListener { … };

}  // namespace browser_sync

namespace base {

// Required to use base::ScopedObservation with syncer::ProtocolEventObserver,
// since the methods are not called AddObserver/RemoveObserver.
template <>
struct ScopedObservationTraits<syncer::SyncService,
                               syncer::ProtocolEventObserver> { … };

// Required to use base::ScopedObservation with syncer::InvalidationsListener,
// since the methods are not called AddObserver/RemoveObserver.
template <>
struct ScopedObservationTraits<syncer::SyncInvalidationsService,
                               syncer::InvalidationsListener> { … };

}  // namespace base

#endif  // COMPONENTS_BROWSER_SYNC_SYNC_INTERNALS_MESSAGE_HANDLER_H_