Bug 862472 - Update snapshots to pick up font updates. r=bhearsum
Bug 862809 - Add mach reftest-ipc and mach crashtest-ipc; r=bz

DONTBUILD (NPOTB)
Only call the done function once per test, failure or success
Log event and state names rather than codes
Give priority to START, STOP and ABORT events
Enable logging on try

Also log MediaStreamGraph events for this run.