chromium/storage/browser/quota/quota_database_migrations.h

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef STORAGE_BROWSER_QUOTA_QUOTA_DATABASE_MIGRATIONS_H_
#define STORAGE_BROWSER_QUOTA_QUOTA_DATABASE_MIGRATIONS_H_

namespace storage {

class QuotaDatabase;

// Helper class of QuotaDatabase which handles the QuotaManager SQL database
// schema migrations. Any change that requires a change in the schema version
// and adds new tables, columns, or modifies existing data should have a
// migration to avoid data loss.
//
// QuotaDatabaseMigrations is a friended class of QuotaDatabase and updates the
// existing SQL QuotaManager database owned by the QuotaDatabase class.
class QuotaDatabaseMigrations { … };

}  // namespace storage

#endif  // STORAGE_BROWSER_QUOTA_QUOTA_DATABASE_MIGRATIONS_H_