13 files declare their use of UrlGeneratorInterface in Zircon Profile 8

AccessDeniedSubscriber.php in core/modules/user/src/EventSubscriber/AccessDeniedSubscriber.php

Contains \Drupal\user\EventSubscriber\AccessDeniedSubscriber.

BlockContentBlock.php in core/modules/block_content/src/Plugin/Block/BlockContentBlock.php

Contains \Drupal\block_content\Plugin\Block\BlockContentBlock.

CommentManager.php in core/modules/comment/src/CommentManager.php

Contains \Drupal\comment\CommentManager.

FormSubmitter.php in core/lib/Drupal/Core/Form/FormSubmitter.php

Contains \Drupal\Core\Form\FormSubmitter.

FormSubmitterTest.php in core/tests/Drupal/Tests/Core/Form/FormSubmitterTest.php

Contains \Drupal\Tests\Core\Form\FormSubmitterTest.

ImageStyleListBuilder.php in core/modules/image/src/ImageStyleListBuilder.php

Contains \Drupal\image\ImageStyleListBuilder.

LinkGenerator.php in core/lib/Drupal/Core/Utility/LinkGenerator.php

Contains \Drupal\Core\Utility\LinkGenerator.

MaintenanceModeSubscriber.php in core/lib/Drupal/Core/EventSubscriber/MaintenanceModeSubscriber.php

Contains \Drupal\Core\EventSubscriber\MaintenanceModeSubscriber.

MetadataBubblingUrlGenerator.php in core/lib/Drupal/Core/Render/MetadataBubblingUrlGenerator.php

Contains \Drupal\Core\Render\MetadataBubblingUrlGenerator.

SupernovaGenerator.php in core/modules/help/tests/modules/help_test/src/SupernovaGenerator.php

Contains \Drupal\help_test\SupernovaGenerator.

TwigExtension.php in core/lib/Drupal/Core/Template/TwigExtension.php

Contains \Drupal\Core\Template\TwigExtension.

Url.php in core/lib/Drupal/Core/Url.php

Contains \Drupal\Core\Url.

ViewsForm.php in core/modules/views/src/Form/ViewsForm.php

Contains \Drupal\views\Form\ViewsForm.