DO NOT MERGE - Allow FR in carrier demo mode

Bug: 34341567
Test: manual - in carrier demo mode, go to Settings > Backup and
Reset > Factory data reset > Reset phone > Erase everything and
this entire path is viewable.

Change-Id: I373a2e94f205f6e6e4dd9a54dcf08532a64e5187

src/com/android/settings/SettingsActivity.java

@@ -1134,7 +1134,8 @@ public class SettingsActivity extends SettingsDrawerActivity
             }
         }
         setTileEnabled(new ComponentName(packageName,
-                BackupSettingsActivity.class.getName()), hasBackupActivity, isAdmin, pm);
+                BackupSettingsActivity.class.getName()), hasBackupActivity,
+                isAdmin || Utils.isCarrierDemoUser(this), pm);
 
     }