Badhri Jagan Sridharan 68cdf1997f Add low power stats to batteryhistory
Exports SOC specific low power state info to batterystats service.
BatteryStats service queries the powerHAL module whenever and
updates the HistoryStepDetails whenever setBatteryState is called by the
BatteryService. The stats get appended to the battery history whenever
there is a change in the battery level.

Bug: 26564574
Change-Id: I02b4db00aec0c69d1558492224f3a4dc1c386fa6
2016-04-27 13:08:40 -07:00
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