Merge "Add metrics for low battery warning" into tm-dev am: 5dc38453 am: a337e341

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



Change-Id: Ic30839ce1cb6255dfbb0479c8845cb109f023561
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>