SetKeystoreMigrationTime   64 sync/engine/all_status.h   void SetKeystoreMigrationTime(const base::Time& migration_time);
SetKeystoreMigrationTime  482 sync/internal_api/sync_manager_impl.cc   allstatus_.SetKeystoreMigrationTime(
SetKeystoreMigrationTime  490 sync/internal_api/sync_manager_impl.cc   allstatus_.SetKeystoreMigrationTime(