Bug 878497 - Add a test case for AudioParam.setValueAtTime; r=roc
Bug 878407 - Allocate a large enough delay buffer when the delay time fraction value is less than 0.5; r=roc
Bug 878328 - Sanitize the time argument of AudioParam.setValueCurveAtTime; r=roc
Bug 878478 - Disable looping of AudioBufferSourceNode when we detect that the loopStart offset is not less than the loopEnd offset; r=roc