am d48ca22b: Use the TTS queue constants in the TTS service as defined in the TextToSpeech class.

Merge commit 'd48ca22b9fcea38b112aedb4126f3d030594af47'

* commit 'd48ca22b9fcea38b112aedb4126f3d030594af47':
  Use the TTS queue constants in the TTS service as defined in the