Output silence if the MediaElementAudioSourceNode has a different origin

LayoutTests/http/tests/security/resources/webaudio/media-element-cross-origin-allow.php

 <?php
 
-if ($_SERVER['REQUEST_METHOD'] == "OPTIONS") {
-    # No preflights should happen.
-    echo "FAIL";
-    exit;
-}
-
 if (isset($_GET['with_credentials'])) {
     header("Access-Control-Allow-Origin: http://127.0.0.1:8000");
     header("Access-Control-Allow-Credentials: true");
 } else {
     header("Access-Control-Allow-Origin: *");
 }
-@include("../../media/resources/serve-video.php");
+
+$name = 'laughter.wav';
+$fp = fopen($name, 'rb');
+
+header("Content-Type: audio/x-wav");
+header("Content-Length: " . filesize($name));
+
+fpassthru($fp);
+exit;
 ?>