Android CTS 8.1 Release 20 (6676678)
Merge remote-tracking branch 'origin/upstream-master'
am: 8ea137d108

Change-Id: Ib12d60716b77917710d90fafbb73b5ac193475e2
tree: 18efde86716d1a3c95d76a17a272649c1392775f
  1. LoopbackApp/