resolve merge conflicts of 5d8e380 to nyc-mr1-dev am: b09a6d0832
am: 6b0a8693e1

* commit '6b0a8693e169a97f5fd92260bcbd437b514d7691':
  AudioTrack: Fix timestamp startup condition

Change-Id: Ie11abf463d4ca8b065fffc66bfb1c4db37a3ca4c