Roll IDL files forward

core/dom/DataTransferItemList.idl

Index: core/dom/DataTransferItemList.idl
diff --git a/core/dom/DataTransferItemList.idl b/core/dom/DataTransferItemList.idl
index eec5c0c50202c52caf2fdc7ac6b23f219f6c68e1..0babe031c24c2c1fa04e11331873091ba16e37c9 100644
--- a/core/dom/DataTransferItemList.idl
+++ b/core/dom/DataTransferItemList.idl
@@ -28,15 +28,13 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-[
-    NoInterfaceObject
-] interface DataTransferItemList {
+interface DataTransferItemList {
     readonly attribute long length;
-    getter DataTransferItem item([Default=Undefined] optional unsigned long index);
+    [ImplementedAs=item] getter DataTransferItem (unsigned long index);
 
+    [RaisesException, ImplementedAs=deleteItem] void remove(unsigned long index);
     void clear();
-    void add(File? file);
-    [RaisesException] void add([Default=Undefined] optional DOMString data,
-             [Default=Undefined] optional DOMString type);
+    DataTransferItem add(File? file);
+    [RaisesException] DataTransferItem add(DOMString data, DOMString type);
 };