Add setting for accelerated compositing for overflow scroll in WKPreferences.
Created attachment 192327 [details] Patch
Comment on attachment 192327 [details] Patch LGTM
Comment on attachment 192327 [details] Patch Clearing flags on attachment: 192327 Committed r145386: <http://trac.webkit.org/changeset/145386>
All reviewed patches have been landed. Closing bug.