#ifndef COMPONENTS_HISTORY_CLUSTERS_CORE_ON_DEVICE_CLUSTERING_BACKEND_H_
#define COMPONENTS_HISTORY_CLUSTERS_CORE_ON_DEVICE_CLUSTERING_BACKEND_H_
#include "base/containers/flat_map.h"
#include "base/containers/flat_set.h"
#include "base/containers/lru_cache.h"
#include "base/containers/unique_ptr_adapters.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/task/sequenced_task_runner.h"
#include "base/task/task_traits.h"
#include "base/time/time.h"
#include "components/history_clusters/core/clustering_backend.h"
namespace optimization_guide {
class OptimizationGuideDecider;
}
namespace site_engagement {
class SiteEngagementScoreProvider;
}
namespace history_clusters {
class OnDeviceClusteringBackend : public ClusteringBackend { … };
}
#endif