Settings Fragment Migration (Build pass app)

This patch focused on fixing compile errors and some runtime errors.

Test: We can't test it now. But we will have an integration test later.
Bug: 110259478
Change-Id: I16c471ddcd0fa1460c665b7f74d86fcace5ee67b

src/com/android/settings/wifi/tether/WifiTetherSettings.java

@@ -110,7 +110,7 @@ public class WifiTetherSettings extends RestrictedDashboardFragment
         final SwitchBar switchBar = activity.getSwitchBar();
         mSwitchBarController = new WifiTetherSwitchBarController(activity,
                 new SwitchBarController(switchBar));
-        getLifecycle().addObserver(mSwitchBarController);
+        getSettingsLifecycle().addObserver(mSwitchBarController);
         switchBar.show();
     }