| Index: LayoutTests/fast/loader/unload-mutation-crash.html
 | 
| diff --git a/LayoutTests/fast/loader/unload-mutation-crash.html b/LayoutTests/fast/loader/unload-mutation-crash.html
 | 
| new file mode 100644
 | 
| index 0000000000000000000000000000000000000000..3a8f3232c5fa8455ecb53c4f95cddc43f3eac491
 | 
| --- /dev/null
 | 
| +++ b/LayoutTests/fast/loader/unload-mutation-crash.html
 | 
| @@ -0,0 +1,23 @@
 | 
| +<script>
 | 
| +if (window.testRunner)
 | 
| +    window.testRunner.dumpAsText();
 | 
| +
 | 
| +function start() {
 | 
| +  window.firstFrame = document.createElement('iframe');
 | 
| +  document.body.appendChild(window.firstFrame);
 | 
| +  window.secondFrame = document.createElement('iframe');
 | 
| +  window.secondFrame.src = 'javascript:window.top.maybeStart();';
 | 
| +  window.firstFrame.contentDocument.documentElement.appendChild(window.secondFrame);
 | 
| +}
 | 
| +
 | 
| +function maybeStart() {
 | 
| +  window.secondFrame.contentWindow.onunload = function() {
 | 
| +    document.documentElement.removeChild(window.bodyEl);
 | 
| +  };
 | 
| +
 | 
| +  window.firstFrame.src = 'javascript:"";';
 | 
| +  console.log("PASS unless crash.");
 | 
| +}
 | 
| +</script>
 | 
| +<body id=bodyEl onload=start()></body>
 | 
| +</html>
 | 
| 
 |