chromium/third_party/blink/web_tests/virtual/text-antialias/fallback-for-custom-font.html

<style>
@font-face {
    font-family: Custom;
    src: url(../../resources/Ahem.ttf);
}
.test {
    font-family: Custom;
    font-style: italic;
    font-size: xx-large;
}
</style>
<p>
    Test for <i><a href="http://crbug.com/373389">http://crbug.com/373389</a>
    When a webfont is missing a glyph, synthesization from the fallback font isn't happening</i>.
</p>
<p>
    A synthesized oblique bullet: <span class="test">&#x25cf;</span>
</p>