#include "chrome/browser/sync_file_system/drive_backend/metadata_db_migration_util.h"
#include <memory>
#include "base/files/file_path.h"
#include "base/strings/string_util.h"
#include "chrome/browser/sync_file_system/drive_backend/drive_backend_util.h"
#include "storage/common/file_system/file_system_types.h"
#include "storage/common/file_system/file_system_util.h"
#include "third_party/leveldatabase/src/include/leveldb/db.h"
#include "third_party/leveldatabase/src/include/leveldb/write_batch.h"
#include "url/gurl.h"
namespace sync_file_system {
namespace drive_backend {
SyncStatusCode MigrateDatabaseFromV4ToV3(leveldb::DB* db) { … }
}
}