Add a new API in BatteryStatsManager for connectivity service am: 3ae5bdab6e am: 584e64df05

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1475899

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ic4f99588f81a9545e91593311d6d4e8e6c64659e