This is needed to allow internal JavaScript clients (e.g. Mail) in order to associate attachment elements in the DOM to _WKAttachments.
<rdar://problem/36365827>
Created attachment 330769 [details] Patch
Created attachment 330773 [details] Rebase on master
Comment on attachment 330773 [details] Rebase on master Thanks Alex!
Comment on attachment 330773 [details] Rebase on master Clearing flags on attachment: 330773 Committed r226612: <https://trac.webkit.org/changeset/226612>
All reviewed patches have been landed. Closing bug.