[Robustness] protect get battery stats from DeadSystemException

In some corner cases, we will receive the DeadSystemException from
BatteryStatService when invoking getBatteryUsageStats() method. Before
this issue is resolved by BatteryStatService team, we will add some
protections to avoid Settings app is crashed.

Bug: 195306545
Bug: 195467687
Test: make SettingsRoboTests
Change-Id: I75fcf63f4f69d86d6dce0e12bd4d738b1219ae47

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

@@ -25,6 +25,7 @@ import android.os.BatteryStatsManager;
 import android.os.BatteryUsageStats;
 import android.os.SystemClock;
 import android.text.format.Formatter;
+import android.util.Log;
 import android.util.SparseIntArray;
 
 import androidx.annotation.NonNull;
@@ -42,6 +43,7 @@ import com.android.settingslib.utils.PowerUtil;
 import com.android.settingslib.utils.StringUtil;
 
 public class BatteryInfo {
+    private static final String TAG = "BatteryInfo";
 
     public CharSequence chargeLabel;
     public CharSequence remainingLabel;
@@ -155,8 +157,13 @@ public class BatteryInfo {
                 if (batteryUsageStats != null) {
                     stats = batteryUsageStats;
                 } else {
-                    stats = context.getSystemService(BatteryStatsManager.class)
-                            .getBatteryUsageStats();
+                    try {
+                        stats = context.getSystemService(BatteryStatsManager.class)
+                                .getBatteryUsageStats();
+                    } catch (RuntimeException e) {
+                        Log.e(TAG, "getBatteryInfo() from getBatteryUsageStats()", e);
+                        return null;
+                    }
                 }
                 return getBatteryInfo(context, stats, shortString);
             }