10 files declare their use of EntityBrowserElement in Entity Browser 8

Cardinality.php in src/Plugin/EntityBrowser/WidgetValidation/Cardinality.php

CardinalityTest.php in tests/src/FunctionalJavascript/CardinalityTest.php

EntityBrowserViewsWidgetTest.php in tests/src/FunctionalJavascript/EntityBrowserViewsWidgetTest.php

EntityReferenceBrowserWidget.php in src/Plugin/Field/FieldWidget/EntityReferenceBrowserWidget.php

EntityReferenceWidgetTest.php in tests/src/FunctionalJavascript/EntityReferenceWidgetTest.php

entity_browser_entity_form.module in modules/entity_form/entity_browser_entity_form.module

Hook implementations for entity_browser_entity_form.module.

FieldWidgetConfigTest.php in tests/src/FunctionalJavascript/FieldWidgetConfigTest.php

FormElementTest.php in tests/src/Functional/FormElementTest.php

FormElementTest.php in tests/modules/entity_browser_test/src/Form/FormElementTest.php

ImageFieldTest.php in tests/src/FunctionalJavascript/ImageFieldTest.php