Merge "BatteryStats: Introduce Async external stats requests" into nyc-dev
am: 0d47f4b

* commit '0d47f4b6463077074abd6bed489a5f9243615c64':
  BatteryStats: Introduce Async external stats requests

Change-Id: I7319535a0210e38a6bc3731a9f0ec42a4485924f