12 files declare their use of ConstraintViolation in Zircon Profile 8

AbstractConstraintValidatorTest.php in vendor/symfony/validator/Tests/Constraints/AbstractConstraintValidatorTest.php

ConstraintViolationBuilder.php in vendor/symfony/validator/Violation/ConstraintViolationBuilder.php

ConstraintViolationBuilder.php in core/lib/Drupal/Core/TypedData/Validation/ConstraintViolationBuilder.php

Contains \Drupal\Core\TypedData\Validation\ConstraintViolationBuilder.

ConstraintViolationListTest.php in vendor/symfony/validator/Tests/ConstraintViolationListTest.php

ConstraintViolationTest.php in vendor/symfony/validator/Tests/ConstraintViolationTest.php

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

Contains \Drupal\Core\Entity\EntityConstraintViolationList.

EntityConstraintViolationListTest.php in core/tests/Drupal/Tests/Core/Entity/EntityConstraintViolationListTest.php

Contains \Drupal\Tests\Core\Entity\EntityConstraintViolationListTest.

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

Contains \Drupal\Core\Entity\Entity\EntityFormDisplay.

ExecutionContext.php in vendor/symfony/validator/Context/ExecutionContext.php

ExecutionContext.php in core/lib/Drupal/Core/TypedData/Validation/ExecutionContext.php

Contains \Drupal\Core\TypedData\Validation\ExecutionContext.

LegacyExecutionContextTest.php in vendor/symfony/validator/Tests/LegacyExecutionContextTest.php

LinkWidget.php in core/modules/link/src/Plugin/Field/FieldWidget/LinkWidget.php

Contains \Drupal\link\Plugin\Field\FieldWidget\LinkWidget.