We should add proper parsing for Promises in WebIDL now that we have IDLType with sub-types.
Created attachment 294105 [details] WIP
Created attachment 294254 [details] Patch
Comment on attachment 294254 [details] Patch Clearing flags on attachment: 294254 Committed r208474: <http://trac.webkit.org/changeset/208474>
All reviewed patches have been landed. Closing bug.