As of bug 1245092, reftest depends on marionette. Normally marionette client has an internal timeout of around
60 seconds where it waits for the server to become available. But when using debuggers (and especially valgrind),
it can take much much longer than a minute for Firefox to start. This patch adds a couple hidden command line
args to reftest to tweak the marionette timeouts.
MozReview-Commit-ID: 3xF0InBJNEf
--HG--
extra : rebase_source : f18092bc90a7d8aab34b527a15bd3b1dc6afc997
48a50c124b