add info about how to return default values from android.jar bug: 30757670 am:...
add info about how to return default values from android.jar bug: 30757670 am: abfa7e2c am: 7a66b70d am: 4b93d10f
am: a2e0ff09
Change-Id: Ie9595ab822456966acf07e7f81c89ef13103bddd