Regularize extended attributes on partial interfaces

Source/modules/serviceworkers/NavigatorServiceWorker.idl

Index: Source/modules/serviceworkers/NavigatorServiceWorker.idl
diff --git a/Source/modules/serviceworkers/NavigatorServiceWorker.idl b/Source/modules/serviceworkers/NavigatorServiceWorker.idl
index a2dcebf31e56c60919387cef5d7c304e2879b925..54032d2faa0ca4be8ddc96f4c47a55bb4832f423 100644
--- a/Source/modules/serviceworkers/NavigatorServiceWorker.idl
+++ b/Source/modules/serviceworkers/NavigatorServiceWorker.idl
@@ -27,8 +27,9 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
+
 [
-    RuntimeEnabled=ServiceWorker
+    RuntimeEnabled=ServiceWorker,
 ] partial interface Navigator {
   [CallWith=ExecutionContext, RaisesException] Promise registerServiceWorker(DOMString pattern, DOMString src);
   [CallWith=ExecutionContext, RaisesException] Promise unregisterServiceWorker(DOMString pattern);