chromium/third_party/blink/web_tests/fast/events/resources/pageshow-pagehide-subsubframe-cachable.html

<p>Subsubframe</p>
<script>
window.onload = function(evt) {
    top.log("Subsubframe window.onload");
}

window.onpageshow = function(evt) {
    top.log("Subsubframe window.onpageshow" + ", target = " + evt.target + ", persisted = " + evt.persisted);
}

window.onpagehide = function(evt) {
    top.log("Subsubframe window.onpagehide" + ", target = " + evt.target + ", persisted = " + evt.persisted);
}
</script>