Merge "cameraservice: Add metrics for extension sessions" into udc-dev am:...

Merge "cameraservice: Add metrics for extension sessions" into udc-dev am: 6ed5a696 am: 3e547bba am: d0ef9e53

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/22984741



Change-Id: Id6970f8b2ff26f9837b66f968e2a43621ce4ebf6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>