chromium/components/history/core/browser/top_sites_backend.h

// Copyright 2011 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_HISTORY_CORE_BROWSER_TOP_SITES_BACKEND_H_
#define COMPONENTS_HISTORY_CORE_BROWSER_TOP_SITES_BACKEND_H_

#include <memory>

#include "base/files/file_path.h"
#include "base/functional/callback.h"
#include "base/memory/ref_counted.h"
#include "components/history/core/browser/history_types.h"

namespace base {
class CancelableTaskTracker;
class FilePath;
class SequencedTaskRunner;
}

namespace history {

class TopSitesDatabase;

// Service used by TopSites to have db interaction happen on the DB thread.  All
// public methods are invoked on the ui thread and get funneled to the DB
// thread.
class TopSitesBackend : public base::RefCountedThreadSafe<TopSitesBackend> { … };

}  // namespace history

#endif  // COMPONENTS_HISTORY_CORE_BROWSER_TOP_SITES_BACKEND_H_