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/deviceinfo/PrivateVolumeSettings.java

@@ -203,7 +203,7 @@ public class PrivateVolumeSettings extends SettingsPreferenceFragment {
         setTitle();
 
         // Valid options may have changed
-        getFragmentManager().invalidateOptionsMenu();
+        getActivity().invalidateOptionsMenu();
 
         final Context context = getActivity();
         final PreferenceScreen screen = getPreferenceScreen();