chromium/third_party/blink/web_tests/animations/stability/keyframe-timing-function-unset-crash.html

<!doctype html>
<title>Test if it doesn't crash when keyframes has 'animation-timing-function:unset'</title>
<style>
@keyframes anim {
    from { animation-timing-function: unset; }
    50% { animation-timing-function: inherit; }
    to { animation-timing-function: initial; }
}
</style>

<div style="animation: anim 10s">This test passes if it doesn't crash</div>

<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
setup({single_test: true});
done();
</script>