Merge "Low battery notifications for USI styluses." into tm-qpr-dev am: 206392b4 am: 5a8d230d

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



Change-Id: I632922bd2a4eb755d9a4dffc3b0709894909e1b4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>