[SpeechSynthesis-speak-twice.html]
disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1410248
expected:
if not debug and not stylo and e10s and (os == "linux") and (version == "Ubuntu 16.04") and (processor == "x86_64") and (bits == 64): CRASH
TIMEOUT
[Using the same SpeechSynthesisUtterance twice for speechSynthesis.speak()]
expected: TIMEOUT