am edf6131d: am 075c8f6e: am a69d6f52: Merge "stagefright: add ClockEstimator API and WindowedLinearFitEstimator"

* commit 'edf6131d1eca1fdff3b151805d241a1cc81b52ca':
  stagefright: add ClockEstimator API and WindowedLinearFitEstimator