Adds full-duplex unit test to AudioDeviceTest on Android

BUG=NONE
R=phoglund@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/42709004

Cr-Original-Commit-Position: refs/heads/master@{#8795}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 80d9aeeda530aaf7e1851b381f1f7545a876d75e
2 files changed