Update database clear & job refresh mechanism for time zone change intent

- Clear database and reset periodic job
- Take a snapshot of current battery usage stats

Bug: 336423923
Test: atest SettingsRoboTests:com.android.settings.fuelgauge.batteryusage
Change-Id: I4aade9db950b508e2190605371f246904f131da3

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/BootBroadcastReceiverTest.java

@@ -173,6 +173,20 @@ public final class BootBroadcastReceiverTest {
         assertThat(mShadowAlarmManager.peekNextScheduledAlarm()).isNull();
     }
 
+    @Test
+    public void onReceive_withTimeZoneChangedIntent_clearAllDataAndRefreshesJob()
+            throws InterruptedException {
+        BatteryTestUtils.insertDataToBatteryStateTable(
+                mContext, Clock.systemUTC().millis(), "com.android.systemui");
+        assertThat(mDao.getAllAfter(0).size()).isEqualTo(1);
+
+        mReceiver.onReceive(mContext, new Intent(Intent.ACTION_TIMEZONE_CHANGED));
+
+        TimeUnit.MILLISECONDS.sleep(100);
+        assertThat(mDao.getAllAfter(0)).isEmpty();
+        assertThat(mShadowAlarmManager.peekNextScheduledAlarm()).isNotNull();
+    }
+
     @Test
     public void invokeJobRecheck_broadcastsIntent() {
         BootBroadcastReceiver.invokeJobRecheck(mContext);