Sometimes responseStart is still -1 when the timing data from CFNetwork is 0. This should fix the assertion failure.
Created attachment 231737 [details] Patch
Created attachment 231739 [details] Patch
Comment on attachment 231739 [details] Patch Is this covered by any regression tests?
Comment on attachment 231739 [details] Patch Clearing flags on attachment: 231739 Committed r169119: <http://trac.webkit.org/changeset/169119>
All reviewed patches have been landed. Closing bug.