It is very difficult to debug a test in DumpRenderTree if there is a timeout. Also, --time-out-ms doesn't seem to be respected.
FWIW, --time-out-ms always works for me. It gets tricker with WebKit2, because there is an additional option to pass to disable a different timeout, I don't remember which one offhand.
Created attachment 228164 [details] Adding --no-timeout option
Comment on attachment 228164 [details] Adding --no-timeout option r=me, nice!
Comment on attachment 228164 [details] Adding --no-timeout option Clearing flags on attachment: 228164 Committed r166515: <http://trac.webkit.org/changeset/166515>
All reviewed patches have been landed. Closing bug.