Actually wrap API::Attachment with a _WKAttachment.
Created attachment 325505 [details] Patch
Comment on attachment 325505 [details] Patch Oops
Comment on attachment 325505 [details] Patch Clearing flags on attachment: 325505 Committed r224256: <https://trac.webkit.org/changeset/224256>
All reviewed patches have been landed. Closing bug.
<rdar://problem/35567665>