In -_WKThumbnailView, -setUsesSnapshot: is a no-op and -usesSnapshot always returns YES. They can be removed.
<rdar://problem/23096454>
Created attachment 384130 [details] Patch
Comment on attachment 384130 [details] Patch Clearing flags on attachment: 384130 Committed r252782: <https://trac.webkit.org/changeset/252782>
All reviewed patches have been landed. Closing bug.