Use UserHandle#getIdentifier to get the userid

UidRange uses PER_USER_RANGE to calculate and get the userid,
but PER_USER_RANGE is a hidden API, so use getIdentifier to get
the userid instead.

Bug: 170598012
Test: atest FrameworksNetTests:UidRangeTest
Change-Id: I06ab0f2da8a33d2b718bbc3a609d3d6a5fe0a095
1 file changed