firefox/testing/web-platform/tests/client-hints/sec-ch-quotes.https.html.headers

Accept-CH: sec-ch-ua,sec-ch-ua-arch,sec-ch-ua-platform,sec-ch-ua-platform-version,sec-ch-ua-model,sec-ch-prefers-color-scheme,sec-ch-prefers-reduced-motion,sec-ch-prefers-reduced-transparency