chromium/components/sync/service/model_load_manager.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_SYNC_SERVICE_MODEL_LOAD_MANAGER_H_
#define COMPONENTS_SYNC_SERVICE_MODEL_LOAD_MANAGER_H_

#include <memory>
#include <optional>

#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "components/sync/base/sync_stop_metadata_fate.h"
#include "components/sync/service/configure_context.h"
#include "components/sync/service/data_type_controller.h"

namespace base {
class ElapsedTimer;
}  // namespace base

namespace syncer {

// Timeout duration for loading data types in ModelLoadManager. Exposed for
// testing.
extern const base::TimeDelta kSyncLoadModelsTimeoutDuration;

// Interface for ModelLoadManager to pass the results of async operations
// back to DataTypeManager.
class ModelLoadManagerDelegate { … };

// `ModelLoadManager` instructs DataTypeControllers to load models and to stop
// (DataTypeManager is responsible for activating/deactivating data types).
// Since the operations are async it uses an interface to inform DataTypeManager
// of the results of the operations.
// This class is owned by DataTypeManager, and lives on the UI thread.
class ModelLoadManager { … };

}  // namespace syncer

#endif  // COMPONENTS_SYNC_SERVICE_MODEL_LOAD_MANAGER_H_