12 files declare their use of InboundPathProcessorInterface in Drupal 8

BrokenInboundPathProcessor.php in core/modules/system/tests/modules/update_script_test/src/PathProcessor/BrokenInboundPathProcessor.php

ConfigTranslationController.php in core/modules/config_translation/src/Controller/ConfigTranslationController.php

LanguageNegotiationUrl.php in core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationUrl.php

PathBasedBreadcrumbBuilder.php in core/modules/system/src/PathBasedBreadcrumbBuilder.php

PathProcessor.php in core/modules/system/tests/modules/url_alter_test/src/PathProcessor.php

PathProcessorEntityResourceBC.php in core/modules/rest/src/PathProcessor/PathProcessorEntityResourceBC.php

PathProcessorFiles.php in core/modules/system/src/PathProcessor/PathProcessorFiles.php

PathProcessorImageStyles.php in core/modules/image/src/PathProcessor/PathProcessorImageStyles.php

PathProcessorLanguage.php in core/modules/language/src/HttpKernel/PathProcessorLanguage.php

PathProcessorTest.php in core/modules/system/tests/modules/url_alter_test/src/PathProcessorTest.php

PathValidator.php in core/lib/Drupal/Core/Path/PathValidator.php

RouteProvider.php in core/lib/Drupal/Core/Routing/RouteProvider.php