Implements the buttons layout for the extra defend

Bug: 235246949
Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.fuelgauge.*
Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.widget.CardPreferenceTest
Test: manual test
Change-Id: I1dc4ab31adf85c684a4c09bd6c9bcfb54b52dc3c

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

@@ -160,6 +160,11 @@ public class PowerUsageFeatureProviderImpl implements PowerUsageFeatureProvider
         return null;
     }
 
+    @Override
+    public boolean isExtraDefend() {
+        return false;
+    }
+
     @Override
     public Map<Long, Map<String, BatteryHistEntry>> getBatteryHistory(Context context) {
         return null;