Adopt new battery history map with interpolation method

Bug: 184807417
Test: make SettingsRoboTests
Change-Id: I5c45a443d0a72df352d4bb707412328ad009f6d4

src/com/android/settings/fuelgauge/PowerUsageFeatureProvider.java

@@ -23,7 +23,6 @@ import android.util.SparseIntArray;
 import com.android.internal.os.BatterySipper;
 import com.android.settingslib.fuelgauge.Estimate;
 
-import java.util.List;
 import java.util.Map;
 
 /**
@@ -136,5 +135,5 @@ public interface PowerUsageFeatureProvider {
     /**
      * Returns battery history data with corresponding timestamp key.
      */
-    Map<Long, List<BatteryHistEntry>> getBatteryHistory(Context context);
+    Map<Long, Map<String, BatteryHistEntry>> getBatteryHistory(Context context);
 }