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chromium/third_party/blink/web_tests/external/wpt/service-workers/service-worker/fetch-event-is-history-backward-navigation-manual.https.html 

<!DOCTYPE html>
<body>
<p>Click <a href="resources/install-worker.html?isHistoryNavigation&amp;script=fetch-event-test-worker.js">this link</a>.
   Once you see &quot;method = GET,...&quot; in the page, go to another page, and then go back to the page using the Backward button.
   You should see &quot;method = GET, isHistoryNavigation = true&quot;.
</p>
</body>
</html>