Narayan Kamath 40f71f0be3 Fix regressions in TTS completion callbacks.
(a) onUtteranceCompleted should be called on errors too. Also,
fix up the error handling so that onUtteranceCompleted is
always called.
(b) Don't treat empty utterances as errors, and let the engine
synthesize them, as before.

bug:5662598
Change-Id: I9223592bc6fe5f47d71103f4f02f046b54a655a8
2011-11-24 17:32:12 +00:00
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