When clicking on the context menu, the selection flashes the menu item and a checkmark appears to its left.
<rdar://problem/20297182>
Created attachment 255498 [details] Patch
Created attachment 255503 [details] Patch
Comment on attachment 255503 [details] Patch Clearing flags on attachment: 255503 Committed r185922: <http://trac.webkit.org/changeset/185922>
All reviewed patches have been landed. Closing bug.