Merge "BatteryStats: use the same timestamp for comparing intervals" into nyc-dev
am: 6a4d9a3

* commit '6a4d9a3c9f7cbd30a7093f5088a72271a5e504c7':
  BatteryStats: use the same timestamp for comparing intervals

Change-Id: I0c32c75176bd1e154ed0286f8426807d0221204a