3 <script src=
"/tests/SimpleTest/paint_listener.js"></script>
4 <script src=
"/browser/gfx/layers/apz/test/mochitest/apz_test_utils.js"></script>
5 <script src=
"/browser/gfx/layers/apz/test/mochitest/apz_test_native_event_utils.js"></script>
16 background-color: blue;