2nd arg of document.createElement should be an object

third_party/WebKit/Source/core/dom/ElementCreationOptions.idl

Index: third_party/WebKit/Source/core/dom/ElementCreationOptions.idl
diff --git a/cc/ipc/frame_sink_id.mojom b/third_party/WebKit/Source/core/dom/ElementCreationOptions.idl
similarity index 59%
copy from cc/ipc/frame_sink_id.mojom
copy to third_party/WebKit/Source/core/dom/ElementCreationOptions.idl
index b8fb286fe883dc8cc0782d867ed452861f85b268..feae6b56f2781b3baf3bfc6ed0619b4d7afbbf0f 100644
--- a/cc/ipc/frame_sink_id.mojom
+++ b/third_party/WebKit/Source/core/dom/ElementCreationOptions.idl
@@ -2,9 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-module cc.mojom;
+// https://dom.spec.whatwg.org/#dictdef-elementcreationoptions
 
-struct FrameSinkId {
-  uint32 client_id;
-  uint32 sink_id;
+dictionary ElementCreationOptions {
+  DOMString is;
 };