http://w3c.github.io/webcomponents/spec/shadow/#event-dispatch
<rdar://problem/24396408>
Apparently we already do this by the virtue of the way we implement it. Or maybe Google fixed it while they were still working on WebKit.
Created attachment 278312 [details] Adds a test
Created attachment 278313 [details] Revert the unrelated change
Comment on attachment 278313 [details] Revert the unrelated change Clearing flags on attachment: 278313 Committed r200536: <http://trac.webkit.org/changeset/200536>
All reviewed patches have been landed. Closing bug.