9 files declare their use of QueryInterface in Zircon Profile 8

AggregatorFeedBlock.php in core/modules/aggregator/src/Plugin/Block/AggregatorFeedBlock.php

Contains \Drupal\aggregator\Plugin\Block\AggregatorFeedBlock.

DefaultProcessor.php in core/modules/aggregator/src/Plugin/aggregator/processor/DefaultProcessor.php

Contains \Drupal\aggregator\Plugin\aggregator\processor\DefaultProcessor.

EntityStorageBase.php in core/lib/Drupal/Core/Entity/EntityStorageBase.php

Contains \Drupal\Core\Entity\EntityStorageBase.

ItemStorage.php in core/modules/aggregator/src/ItemStorage.php

Contains \Drupal\aggregator\ItemStorage.

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

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

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

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

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

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

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

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

SqlContentEntityStorage.php in core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php

Contains \Drupal\Core\Entity\Sql\SqlContentEntityStorage.