Provide different ways to detect battery defender.

Bug: 335567248
Test: robotests
Change-Id: Ie1d3d7da99fa698468ffd124410cfd3b56bc0c34

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

@@ -151,4 +151,7 @@ public interface PowerUsageFeatureProvider {
 
     /** Whether the app optimization mode is valid to restore */
     boolean isValidToRestoreOptimizationMode(ArrayMap<String, String> deviceInfoMap);
+
+    /** Whether the device is under the battery defender mode */
+    boolean isBatteryDefend(BatteryInfo info);
 }