<!DOCTYPE html>
<title>Test that -internal-media-controls-* deprecated selectors throw a warning</title>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<style>
video::-internal-media-controls-overlay-cast-button {
  background-color: blue;
}
</style>
<video controls></video>
<script>
test(() => {
  // Doing nothing, we just want to check the warnings.
});
</script>