This required moving template function ValidateEvent into the .h file to avoid
linking problems in xul-gtest.
--HG--
rename : dom/media/webaudio/compiledtest/TestAudioEventTimeline.cpp => dom/media/webaudio/gtest/TestAudioEventTimeline.cpp
rename : dom/media/webaudio/compiledtest/moz.build => dom/media/webaudio/gtest/moz.build
extra : rebase_source : 1a8917fc0e75e9c264bc88aec5565d9fff085c12