AudioTrack.Builder should throw exception on failure.
AudioTrack.Builder should throw exception on failure.

Should throw UnsupportedOperationException instead of returning
an uninitialized track object.

Bug: 21890643
Change-Id: I34df73b316fcb490be05eb3beff06b795645fd4c

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base