ExclusionPolygon edges that lie above minLogicalIntervalTop can't contribute to the first fit location, so we can economize by ignoring them (don't create offset edges for them).
Created attachment 184768 [details] Patch
Comment on attachment 184768 [details] Patch r=me
Comment on attachment 184768 [details] Patch Clearing flags on attachment: 184768 Committed r142187: <http://trac.webkit.org/changeset/142187>
All reviewed patches have been landed. Closing bug.