Merge "TouchpadInputMapper: report usage metrics" into udc-qpr-dev am: c16c3d24b7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23589249

Change-Id: I5f306d5977e9de3183cad38de1848431682da7e5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>