<!DOCTYPE html>
<script>
function f0() {
  var v46 = x76.contentWindow;
  var v61 = v46.customElements;
  v61.whenDefined("custom-b");
}
function f3() {
  var v1 = document.createElement("col");
  v1.requestPointerLock();
  x46.toBlob(f3,"image/png",0);
  document.onpointerlockerror = f0;
  a = new Uint8Array(1024*1024*200); // gc
}
onload = () => {
  if (window.testRunner)
    testRunner.dumpAsText();
  console.log("This test passes if it does not crash.");
}
</script>
<details id="x9" ontoggle="f3()" open="">
<video  onblur="f0()" src="x">
<iframe id="x76" srcdoc="AAAAAAAA"></iframe>
<canvas id="x46" contenteditable="true"></canvas>