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

Merge "cameraservice: Add metrics for extension sessions" into udc-dev am: 6ed5a696 am: 09ed1c27 am: db806bcd

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



Change-Id: Ib1e38a0a4d3c9be23e4bc3afcaea0d8356874b5b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>