7 files declare their use of FieldFieldAccessTestBase in Drupal 9

AggregatorFeedViewsFieldAccessTest.php in core/modules/aggregator/tests/src/Kernel/Views/AggregatorFeedViewsFieldAccessTest.php

AggregatorItemViewsFieldAccessTest.php in core/modules/aggregator/tests/src/Kernel/Views/AggregatorItemViewsFieldAccessTest.php

CommentViewsFieldAccessTest.php in core/modules/comment/tests/src/Kernel/Views/CommentViewsFieldAccessTest.php

FileViewsFieldAccessTest.php in core/modules/file/tests/src/Kernel/Views/FileViewsFieldAccessTest.php

NodeViewsFieldAccessTest.php in core/modules/node/tests/src/Kernel/Views/NodeViewsFieldAccessTest.php

TaxonomyViewsFieldAccessTest.php in core/modules/taxonomy/tests/src/Kernel/Views/TaxonomyViewsFieldAccessTest.php

UserViewsFieldAccessTest.php in core/modules/user/tests/src/Kernel/Views/UserViewsFieldAccessTest.php