Add support for [NoInterfaceObject] extended attribute to bindings generator

Source/modules/filesystem/DirectoryEntrySync.idl

Index: Source/modules/filesystem/DirectoryEntrySync.idl
diff --git a/Source/modules/filesystem/DirectoryEntrySync.idl b/Source/modules/filesystem/DirectoryEntrySync.idl
index 2301dfc12ca1f9ba9dad39968876c90a6a9ba4a0..eb8a1166ad62ab2f6cf95edb55e18178ccef86bb 100644
--- a/Source/modules/filesystem/DirectoryEntrySync.idl
+++ b/Source/modules/filesystem/DirectoryEntrySync.idl
@@ -28,7 +28,9 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-interface DirectoryEntrySync : EntrySync {
+[
+    NoInterfaceObject,
+] interface DirectoryEntrySync : EntrySync {
     [RaisesException] DirectoryReaderSync createReader();
     [RaisesException] FileEntrySync getFile([TreatNullAs=NullString, TreatUndefinedAs=NullString] DOMString path, Dictionary flags);
     [RaisesException] DirectoryEntrySync getDirectory([TreatNullAs=NullString, TreatUndefinedAs=NullString] DOMString path, Dictionary flags);