21 files declare their use of ClassResolverInterface

ConstraintValidatorFactory.php in core/lib/Drupal/Core/Validation/ConstraintValidatorFactory.php
ContextDefinitionIsSatisfiedTest.php in core/tests/Drupal/Tests/Core/Plugin/Context/ContextDefinitionIsSatisfiedTest.php
ContextHandlerTest.php in core/tests/Drupal/Tests/Core/Plugin/ContextHandlerTest.php
Contains \Drupal\Tests\Core\Plugin\ContextHandlerTest.
ControllerResolver.php in core/lib/Drupal/Core/Controller/ControllerResolver.php
CustomAccessCheckTest.php in core/tests/Drupal/Tests/Core/Access/CustomAccessCheckTest.php
Contains \Drupal\Tests\Core\Access\CustomAccessCheckTest.
DrupalTest.php in core/tests/Drupal/Tests/Core/DrupalTest.php
EntityContextDefinitionIsSatisfiedTest.php in core/tests/Drupal/Tests/Core/Plugin/Context/EntityContextDefinitionIsSatisfiedTest.php
EntityResolverManager.php in core/lib/Drupal/Core/Entity/EntityResolverManager.php
EntityTypeManager.php in core/lib/Drupal/Core/Entity/EntityTypeManager.php
FormBuilder.php in core/lib/Drupal/Core/Form/FormBuilder.php
FormControllerTest.php in core/tests/Drupal/Tests/Core/Controller/FormControllerTest.php
HtmlFormController.php in core/lib/Drupal/Core/Controller/HtmlFormController.php
MainContentViewSubscriber.php in core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php
MenuLinkEditForm.php in core/modules/menu_ui/src/Form/MenuLinkEditForm.php
PluginFormFactory.php in core/lib/Drupal/Core/Plugin/PluginFormFactory.php
PluginFormFactoryTest.php in core/tests/Drupal/Tests/Core/Plugin/PluginFormFactoryTest.php
ThemeNegotiator.php in core/lib/Drupal/Core/Theme/ThemeNegotiator.php
TypedConfigManager.php in core/lib/Drupal/Core/Config/TypedConfigManager.php
TypedDataManager.php in core/lib/Drupal/Core/TypedData/TypedDataManager.php
ViewsForm.php in core/modules/views/src/Form/ViewsForm.php
WorkspaceManager.php in core/modules/workspaces/src/WorkspaceManager.php

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