Add a secondary DA to ApiDemos for testing

Bug 27107878

Change-Id: Id8179926d424ca8b4678ac028f4c9eab7a81a4c2

samples/ApiDemos/src/com/example/android/apis/app/DeviceAdminSample.java

@@ -1114,4 +1114,7 @@ public class DeviceAdminSample extends PreferenceActivity {
             Log.v(TAG, message);
         }
     }
+
+    public static class DeviceAdminSampleReceiver2 extends DeviceAdminReceiver {
+    }
 }