Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/external/wpt/css/css-fonts/support/iframe-using-ahem-as-web-font.html 

<!DOCTYPE html>
<style>
@font-face {
    font-family: CustomFontFamily;
    src: url(/fonts/Ahem.ttf);
}
</style>
<div style="font-size: 30px; font-family: CustomFontFamily">Hello!</div>