Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/http/tests/security/referrer-policy-attribute-img-no-referrer.html 

<!DOCTYPE html>
<html>
<body>
    <meta name="referrer" content="origin">
    <img src="resources/green-if-no-referrer.php"
       referrerpolicy="no-referrer" />
</body>
</html>