Settings: Don't lose the switch bar returning to saver settings.

Bug: 18595359
Change-Id: I01c24fd8ed304837338c2b353805b3d3324e1639

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

@@ -63,7 +63,10 @@ public class BatterySaverSettings extends SettingsPreferenceFragment
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
-        if (mCreated) return;
+        if (mCreated) {
+            mSwitchBar.show();
+            return;
+        }
         mCreated = true;
         addPreferencesFromResource(R.xml.battery_saver_settings);