7 files declare their use of Stream in Zircon Profile 8.0

DiactorosFactory.php in vendor/symfony/psr-http-message-bridge/Factory/DiactorosFactory.php

EmptyResponse.php in vendor/zendframework/zend-diactoros/src/Response/EmptyResponse.php

HtmlResponse.php in vendor/zendframework/zend-diactoros/src/Response/HtmlResponse.php

JsonResponse.php in vendor/zendframework/zend-diactoros/src/Response/JsonResponse.php

RedirectResponse.php in vendor/zendframework/zend-diactoros/src/Response/RedirectResponse.php

Serializer.php in vendor/zendframework/zend-diactoros/src/Request/Serializer.php

Serializer.php in vendor/zendframework/zend-diactoros/src/Response/Serializer.php