<!DOCTYPE html>
<h1>Tester for ExperimentalAutoplayDynamicDelegation feature</h1>
<button id="button">Play</button>
<br>
<iframe src="https://codepen.io/mustaqahmed/full/BXyqzp"></iframe>
<script>
  document.getElementById("button").onclick = () => {
    console.log("mDebug: onclick");
    // The test page is inside Codepen's wrapper frame.
    frames[0].frames[0].postMessage("hi", "*");
  };
</script>

<!DOCTYPE html>
<h1>Tester for ExperimentalAutoplayDynamicDelegation feature</h1>
<button id="button">Play</button>
<br>
<iframe src="https://codepen.io/mustaqahmed/full/BXyqzp"></iframe>
<script>
  document.getElementById("button").onclick = () => {
    console.log("mDebug: onclick");
    // The test page is inside Codepen's wrapper frame.
      frames[0].frames[0].postMessage("hi",
          {targetOrigin: "*", allowAutoplay: true});
  };
</script>

Add autoplay option to postMessage call.
Add autoplay option to postMessage call.
