am c1a74cea: Merge "Added tests for audio effects." into gingerbread

Merge commit 'c1a74cea248289a4822fe7cd0b734ddae3ba4b9f' into gingerbread-plus-aosp

* commit 'c1a74cea248289a4822fe7cd0b734ddae3ba4b9f':
  Added tests for audio effects.