Remove the chunked update drawing area
Created attachment 94270 [details] Patch
Comment on attachment 94270 [details] Patch rs=me
Comment on attachment 94270 [details] Patch Attachment 94270 [details] did not pass mac-ews (mac): Output: http://queues.webkit.org/results/8717597
Committed r86990: <http://trac.webkit.org/changeset/86990>