6 files declare their use of QueryFactoryInterface in Zircon Profile 8

MigrationStorage.php in core/modules/migrate/src/MigrationStorage.php

Contains \Drupal\migrate\MigrationStorage.

MigrationStorageTest.php in core/modules/migrate/tests/src/Unit/MigrationStorageTest.php

Contains \Drupal\Tests\migrate\Unit\MigrationStorageTest.

QueryFactory.php in core/lib/Drupal/Core/Config/Entity/Query/QueryFactory.php

Contains \Drupal\Core\Config\Entity\Query\QueryFactory.

QueryFactory.php in core/lib/Drupal/Core/Entity/KeyValueStore/Query/QueryFactory.php

Contains \Drupal\Core\Entity\KeyValueStore\Query\QueryFactory.

QueryFactory.php in core/lib/Drupal/Core/Entity/Query/Sql/QueryFactory.php

Contains \Drupal\Core\Entity\Query\Sql\QueryFactory.

QueryFactory.php in core/lib/Drupal/Core/Entity/Query/Null/QueryFactory.php

Contains \Drupal\Core\Entity\Query\Null\QueryFactory.