Merge "Volume Test: allow and set testable looper as main" into udc-qpr-dev am: 4fa5faa4e9 am: 0ff628f150

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24623100

Change-Id: I789770ddb4cf451b771e5665c75d754580f7c790
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>