Merge "UsecaseValidator: ignore special use cases when usage is unknown" into...

Merge "UsecaseValidator: ignore special use cases when usage is unknown" into udc-dev am: c51730bb am: 330d49d1 am: 8900ad0c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/23348706



Change-Id: Idc11f24d9e54b85d821eec002c9a1d6b3a4b885c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>