Codebase Browser
chromium
Go to App

chromium/chrome/test/data/client_hints/without_accept_ch_img_foo_com.html 

<html>
<link rel="icon" href="data:;base64,=">
<head></head>
File which uses link-rel to disable favicon fetches.
<img src="https://foo.com/non-existing-image.jpg"></img>
</html>