REGRESSION(r213590): UI process updates the visible content rects more often than it did in iOS 10
Created attachment 314890 [details]
Created attachment 314891 [details]
Comment on attachment 314891 [details]
Clearing flags on attachment: 314891
Committed r219293: <http://trac.webkit.org/changeset/219293>
All reviewed patches have been landed. Closing bug.