Add restricted padlock support for listpreference.

Change-Id: I1f3284a474d225df803abd57dd71382cb1dfa659
diff --git a/src/com/android/settings/SettingsPreferenceFragment.java b/src/com/android/settings/SettingsPreferenceFragment.java
index d8b9b91..cb3c151 100644
--- a/src/com/android/settings/SettingsPreferenceFragment.java
+++ b/src/com/android/settings/SettingsPreferenceFragment.java
@@ -476,7 +476,10 @@
             preference.setKey(UUID.randomUUID().toString());
         }
         DialogFragment f = null;
-        if (preference instanceof CustomListPreference) {
+        if (preference instanceof RestrictedListPreference) {
+            f = RestrictedListPreference.RestrictedListPreferenceDialogFragment
+                    .newInstance(preference.getKey());
+        } else if (preference instanceof CustomListPreference) {
             f = CustomListPreference.CustomListPreferenceDialogFragment
                     .newInstance(preference.getKey());
         } else if (preference instanceof CustomDialogPreference) {