Merge "Add test scan message during Frontend.scan in the Frontend default impl" into sc-dev am: bc593da215

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/13702469

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I2e9c4c0a1b34b3e160bd00a94287cec4400a3ff3