Add metric for battery defender

Bug: 188384887
Test: make SettingsRoboTests
Change-Id: Ida96deb6efe94a98cf6837b9f82758467a4d1300

src/com/android/settings/fuelgauge/batterytip/tips/BatteryDefenderTip.java

@@ -16,6 +16,7 @@
 
 package com.android.settings.fuelgauge.batterytip.tips;
 
+import android.app.settings.SettingsEnums;
 import android.content.Context;
 import android.os.Parcel;
 
@@ -57,7 +58,8 @@ public class BatteryDefenderTip extends BatteryTip {
 
     @Override
     public void log(Context context, MetricsFeatureProvider metricsFeatureProvider) {
-        // TODO(b/173985153): Add logging enums for Battery Defender.
+        metricsFeatureProvider.action(context, SettingsEnums.ACTION_BATTERY_DEFENDER_TIP,
+                mState);
     }
 
     public static final Creator CREATOR = new Creator() {