am a6706b3: Merge change 1131 into donut

Merge commit 'a6706b3c8f7e8759d5165535c95f6cd7147ab5e2'

* commit 'a6706b3c8f7e8759d5165535c95f6cd7147ab5e2':
  fix issue 1641535: SoundPool should use AudioTrack with shared memory buffer