am 59d299ce: Merge change 6789 into donut

Merge commit '59d299ce8d66f6f3091fca33d3741c0b24d678f6'

* commit '59d299ce8d66f6f3091fca33d3741c0b24d678f6':
  Add support in TextToSpeech for an audio stream type param and utterance