am 36b205dc: am 6df44727: Unhiding TTS API constants and methods needed for TTS plugin support. This is a fix for bug #2548048

Merge commit '36b205dc6fbe010b393e2f885bd7d6d05b74919b' into kraken

* commit '36b205dc6fbe010b393e2f885bd7d6d05b74919b':
  Unhiding TTS API constants and methods needed for TTS plugin support.