8 files declare their use of FilterPluginBase in Drupal 10

Access.php in core/modules/node/src/Plugin/views/filter/Access.php

FilterExceptionTest.php in core/modules/views/tests/modules/views_test_data/src/Plugin/views/filter/FilterExceptionTest.php

FilterTest.php in core/modules/views/tests/modules/views_test_data/src/Plugin/views/filter/FilterTest.php

HistoryUserTimestamp.php in core/modules/history/src/Plugin/views/filter/HistoryUserTimestamp.php

Status.php in core/modules/node/src/Plugin/views/filter/Status.php

Status.php in core/modules/media/src/Plugin/views/filter/Status.php

UserUid.php in core/modules/comment/src/Plugin/views/filter/UserUid.php

ViewsTestCacheContextFilter.php in core/modules/views/tests/modules/views_test_data/src/Plugin/views/filter/ViewsTestCacheContextFilter.php