Unlike testRunner.displayAndTrackRepaints(), this new function forces drawing the web page but without track repaints.
Created attachment 309107 [details] Patch
Created attachment 309109 [details] Patch
Comment on attachment 309109 [details] Patch Clearing flags on attachment: 309109 Committed r216219: <http://trac.webkit.org/changeset/216219>
All reviewed patches have been landed. Closing bug.