Format battery java code

After this CL, we can follow Guideline:go/hc-mainline-dev#format-code to keep java format consistent.

Test: manual
Bug: 304439460
Change-Id: I5bb77f81b0bd9be618e34942eaaee8296bc42796

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

@@ -71,6 +71,7 @@ public class BatterySaverReceiver extends BroadcastReceiver {
 
     public interface BatterySaverListener {
         void onPowerSaveModeChanged();
+
         void onBatteryChanged(boolean pluggedIn);
     }
 }