Import tests in https://github.com/w3c/web-platform-tests/tree/master/custom-elements except v1 tests.
Created attachment 290754 [details] Imports tests
Comment on attachment 290754 [details] Imports tests rs=me if the bots are happy.
<rdar://problem/28642111>
Comment on attachment 290754 [details] Imports tests Clearing flags on attachment: 290754 Committed r206838: <http://trac.webkit.org/changeset/206838>
All reviewed patches have been landed. Closing bug.