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

Merge "cameraservice: Add metrics for extension sessions" into udc-dev am: 6ed5a696 am: ce24430b

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



Change-Id: I5422a8fe88445f1535472c23f6c7cafc235004ed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>