Include saved battery history chunks into BatteryUsageStats parcel

Bug: 209297031
Test: Test: atest FrameworksCoreTests:BatteryUsageStatsTest FrameworksCoreTests:BatteryUsageStatsProviderTest
Merged-In: I369d863b6f6fd488030aa031cc465bef6ce99ab8
Change-Id: Ifc70a49b731b5510e7bcd049e0c12d9ac7f68f44
7 files changed