Add background image for work challenge

If the challenge shown is for a work profile, add the default image and
color to the background of the fragment.

Change-Id: I148c6cd3a835a84c7bac78b020839dfdae4a6c36

src/com/android/settings/ChooseLockPattern.java

@@ -370,7 +370,7 @@ public class ChooseLockPattern extends SettingsActivity {
             }
             Intent intent = getActivity().getIntent();
             // Only take this argument into account if it belongs to the current profile.
-            mUserId = Utils.getSameOwnerUserId(getActivity(), intent.getExtras());
+            mUserId = Utils.getUserIdFromBundle(getActivity(), intent.getExtras());
         }
 
         @Override