Include process state data in battery usage stats snapshots.

As the background current monitoring would need to access that.

Bug: 203105544
Test: FrameworksCoreTests:com.android.internal.os
Change-Id: Id5c04c4910054675d7f6e989f8eabf4321466e39

core/java/com/android/internal/os/BatteryUsageStatsStore.java

@@ -58,6 +58,7 @@ public class BatteryUsageStatsStore {
             new BatteryUsageStatsQuery.Builder()
                     .setMaxStatsAgeMs(0)
                     .includePowerModels()
+                    .includeProcessStateData()
                     .build());
     private static final String BATTERY_USAGE_STATS_DIR = "battery-usage-stats";
     private static final String SNAPSHOT_FILE_EXTENSION = ".bus";