Fix SoundPool.play() looping regression in 4.3 DO NOT MERGE

The change I7370d6e59a7ef26dfb284a8b058d5ab2e0a42ccf caused a regression
in SoundPool looping when using SoundPool's streaming implementation.
This reverts a portion of that change.

Bug: https://code.google.com/p/android/issues/detail?id=58113
Bug: 10171337
Change-Id: I8af0dc8683a7c7f225c80f0eb4d39770667b52e5