8 files declare their use of Cookie in Zircon Profile 8

ClientTest.php in vendor/symfony/http-kernel/Tests/ClientTest.php

CookieTest.php in vendor/symfony/http-foundation/Tests/CookieTest.php

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

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

RequestDataCollectorTest.php in vendor/symfony/http-kernel/Tests/DataCollector/RequestDataCollectorTest.php

ResponseHeaderBagTest.php in vendor/symfony/http-foundation/Tests/ResponseHeaderBagTest.php

SecuredRedirectResponseTest.php in core/tests/Drupal/Tests/Component/HttpFoundation/SecuredRedirectResponseTest.php

Contains \Drupal\Tests\Component\HttpFoundation\SecuredRedirectResponseTest.

TestSessionListener.php in vendor/symfony/http-kernel/EventListener/TestSessionListener.php