Merge "Add metrics for low battery warning" into tm-dev am: 5dc38453

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17635305



Change-Id: I48cf7b00ce9e91ef42079ddcf30bd87b61a382fd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>