Merge "DO NOT MERGE SoundPool: add lock for findSample access from SoundPoolThread" into lmp-dev am: 0c4d693722 am: ba49fda63a  -s ours am: bb1809ace7 am: adfda28b42 am: 569d39f94a  -s ours am: 975bb62996
am: b51610971c

* commit 'b51610971c26307bf50dd4c9ff5a50f512e75d6a':
  DO NOT MERGE SoundPool: add lock for findSample access from SoundPoolThread