chromium/third_party/blink/web_tests/external/wpt/infrastructure/testdriver/click_nested_crossorigin.sub.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>TestDriver click method with multiple windows and nested iframe</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>

<iframe src="about:blank"></iframe>

<script>
setup({single_test: true});

window.open("about:blank")
var child = window.open("https://{{host}}:{{ports[https][0]}}/infrastructure/testdriver/click_outer_child.sub.html")
window.open("about:blank")

addEventListener("message", (msg) => {
    if (msg.data === "PASS") {
        done();
    } else if (msg.data === "FAIL") {
        assert_unreached("click failed")
    }
});
</script>