Provide foreground_service usage time in BatteryDiffEntry.

- Fetch foreground service info through new api from UidBatteryConsumer.
- Record fgs & bg usage time separately, combine them till ui display.

Bug: 315255868
Test: make RunSettingsRoboTests ROBOTEST_FILTER="com.android.settings.fuelgauge.*"
Change-Id: Ic19844db7908a6ae6522c7a72972f44f94dcfca4

src/com/android/settings/fuelgauge/batteryusage/BatteryUsageBreakdownController.java

@@ -400,7 +400,7 @@ public class BatteryUsageBreakdownController extends BasePreferenceController
                         mPrefContext,
                         entry.isSystemEntry(),
                         entry.mForegroundUsageTimeInMs,
-                        entry.mBackgroundUsageTimeInMs,
+                        entry.mBackgroundUsageTimeInMs + entry.mForegroundServiceUsageTimeInMs,
                         entry.mScreenOnTimeInMs));
     }
 }