Whitelist fragments appropriate for an activity

Change-Id: If4f8c4e9d9949b652946cffe0ebb09b587e5a042

src/com/android/settings/SubSettings.java

@@ -16,6 +16,11 @@
 
 package com.android.settings;
 
+import android.app.Fragment;
+import android.util.Log;
+
+import com.android.settings.ChooseLockGeneric.ChooseLockGenericFragment;
+
 /**
  * Stub class for showing sub-settings; we can't use the main Settings class
  * since for our app it is a special singleTask class.
@@ -27,4 +32,10 @@ public class SubSettings extends Settings {
         finish();
         return true;
     }
+
+    @Override
+    protected boolean isValidFragment(String fragmentName) {
+        Log.d("SubSettings", "Launching fragment " + fragmentName);
+        return true;
+    }
 }