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

// Copyright 2012 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_EXPIRE_HISTORY_BACKEND_H_
#define COMPONENTS_HISTORY_CORE_BROWSER_EXPIRE_HISTORY_BACKEND_H_

#include <map>
#include <memory>
#include <optional>
#include <set>
#include <vector>

#include "base/containers/queue.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "components/history/core/browser/history_types.h"

class GURL;

namespace base {
class SequencedTaskRunner;
}

namespace favicon {
class FaviconDatabase;
}

namespace history {

class HistoryBackendClient;
class HistoryBackendNotifier;
class HistoryDatabase;

// Encapsulates visit expiration criteria and type of visits to expire.
class ExpiringVisitsReader { … };

ExpiringVisitsReaders;

namespace internal {
// The minimum number of days since last use for an icon to be considered old.
extern const int kOnDemandFaviconIsOldAfterDays;
}  // namespace internal

// Helper component to HistoryBackend that manages expiration and deleting of
// history.
//
// It will automatically start periodically expiring old history once you call
// StartExpiringOldStuff().
class ExpireHistoryBackend { … };

}  // namespace history

#endif  // COMPONENTS_HISTORY_CORE_BROWSER_EXPIRE_HISTORY_BACKEND_H_