Update strings for charging optimization mode.

Update the battery settings summary and the charging string on the Battery settings page if charging optimization mode is applied.

Bug: 329020954
Test: atest SettingsRoboTests
Change-Id: Ie906a010d70bcef7fafe235f0287b289ea934705

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

@@ -67,4 +67,26 @@ public class BatterySettingsFeatureProviderImpl implements BatterySettingsFeatur
             @NonNull Context context, long remainingTimeMs, long currentTimeMs) {
         return null;
     }
+
+    @Override
+    public boolean isChargingOptimizationMode(@NonNull Context context) {
+        return false;
+    }
+
+    @Nullable
+    @Override
+    public CharSequence getChargingOptimizationRemainingLabel(
+            @NonNull Context context, long chargeRemainingTimeMs, long currentTimeMs) {
+        return null;
+    }
+
+    @Nullable
+    @Override
+    public CharSequence getChargingOptimizationChargeLabel(
+            @NonNull Context context,
+            @NonNull String batteryPercentageString,
+            long chargeRemainingTimeMs,
+            long currentTimeMs) {
+        return null;
+    }
 }