chromium/components/update_client/persisted_data.h

// Copyright 2016 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_UPDATE_CLIENT_PERSISTED_DATA_H_
#define COMPONENTS_UPDATE_CLIENT_PERSISTED_DATA_H_

#include <memory>
#include <set>
#include <string>
#include <vector>

#include "base/functional/callback_forward.h"
#include "base/values.h"

namespace base {
class Time;
class Version;
}  // namespace base

class PrefService;
class PrefRegistrySimple;

namespace update_client {

extern const char kPersistedDataPreference[];
extern const char kLastUpdateCheckErrorPreference[];
extern const char kLastUpdateCheckErrorCategoryPreference[];
extern const char kLastUpdateCheckErrorExtraCode1Preference[];

class ActivityDataService;
struct CategorizedError;

// A PersistedData is a wrapper layer around a PrefService, designed to maintain
// update data that outlives the browser process and isn't exposed outside of
// update_client.
//
// The public methods of this class should be called only on the sequence that
// initializes it - which also has to match the sequence the PrefService has
// been initialized on.
class PersistedData { … };

// Creates a PersistedData instance. Passing null for either or both parameters
// is safe and will disable functionality that relies on them.
std::unique_ptr<PersistedData> CreatePersistedData(
    PrefService* pref_service,
    std::unique_ptr<ActivityDataService> activity_data_service);

// Register prefs for a PersistedData returned by CreatePersistedData.
void RegisterPersistedDataPrefs(PrefRegistrySimple* registry);

}  // namespace update_client

#endif  // COMPONENTS_UPDATE_CLIENT_PERSISTED_DATA_H_