Merge "Low battery notifications for USI styluses." into tm-qpr-dev am: 206392b4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20608953



Change-Id: Ic61d520a905d37a6def6771c2f27162e5e9d59d7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>