LGTM1 On Sat, Sep 2, 2023 at 1:06 AM Luke <[email protected]> wrote:
> Apologies, https://github.com/w3ctag/design-reviews/issues/632 would be > the relevant link. Will update in Chromestatus too. > > On Friday, 1 September 2023 at 23:10:25 UTC+1 [email protected] wrote: > >> On 8/30/23 3:55 PM, Luke wrote: >> >> Contact emails [email protected], [email protected] >> >> Explainer >> https://github.com/wicg/user-preference-media-features-headers/blob/main/README.md >> >> Specification >> https://wicg.github.io/user-preference-media-features-headers/#sec-ch-prefers-reduced-transparency >> >> Summary >> >> User Preference Media Features Client Hints Header defines a set of HTTP >> Client Hints headers around user preference media features as defined by >> Media Queries Level 5. If used as Critical Client Hints, these headers >> allow servers to make smart choices regarding, e.g., CSS inlining. >> Sec-CH-Prefers-Reduced-Transparency reflects the user's >> prefers-reduced-transparency preference. >> >> >> Blink component Blink>CSS >> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS> >> >> Search tags client hints >> <https://chromestatus.com/features#tags:client%20hints>, >> sec-ch-prefers-reduced-transparency >> <https://chromestatus.com/features#tags:sec-ch-prefers-reduced-transparency> >> , prefers-reduced-transparency >> <https://chromestatus.com/features#tags:prefers-reduced-transparency> >> >> TAG review >> >> Anything relevant to link here? >> >> >> >> TAG review status Pending >> >> Risks >> >> >> Interoperability and Compatibility >> >> *Gecko*: No signal ( >> https://github.com/mozilla/standards-positions/issues/526) >> >> *WebKit*: No signal ( >> https://github.com/WebKit/standards-positions/issues/15) >> >> *Web developers*: Positive (WICG proposal Issue: >> https://github.com/WICG/proposals/issues/30 with feedback from >> developers working for Facebook and Magento. Twitter: >> https://twitter.com/kilianvalkhof/status/1392404416335056896. The >> proposal was initially discussed in >> https://github.com/w3c/csswg-drafts/issues/4162 and received positive >> feedback via 18 Likes) >> >> *Other signals*: >> >> Activation >> >> Developers will include Sec-CH-Prefers-Reduced-Transparency in the >> response headers Accept-CH and Critical-CH to let the browser know that >> they’re interested in the user's transparency preferences. If supported, >> the request header Sec-CH-Prefers-Reduced-Transparency will be populated >> with the appropriate value. This follows the same pattern as existing >> Preference Client Hints and as such should be easy for developers to make >> use of. >> >> >> Security >> >> This feature could be used for fingerprinting as it exposes a user >> preference. However, this is already exposed to CSS/JS by the >> `prefers-reduced-transparency` media query. >> >> >> WebView application risks >> >> Does this intent deprecate or change behavior of existing APIs, such that >> it has potentially high risk for Android WebView-based applications? >> >> >> Debuggability >> >> Developers can change this client hint header value by emulating >> prefers-reduced-transparency via Devtools in the Rendering Panel. >> >> >> Will this feature be supported on all six Blink platforms (Windows, Mac, >> Linux, Chrome OS, Android, and Android WebView)? Yes >> >> The feature will be supported on all platforms, but whether the user will >> be able to signal a reduced transparency preference depends on the OS. >> >> >> Is this feature fully tested by web-platform-tests >> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> >> ? Yes >> >> Flag name on chrome://flags #enable-experimental-web-platform-features >> >> Finch feature name ClientHintsPrefersReducedTransparency >> >> Requires code in //chrome? False >> >> Tracking bug >> https://bugs.chromium.org/p/chromium/issues/detail?id=1466423 >> >> Sample links >> https://sec-ch-prefers-reduced-transparency.glitch.me >> >> Estimated milestones >> Shipping on desktop 118 >> DevTrial on desktop 118 >> Shipping on Android 118 >> DevTrial on Android 118 >> >> Anticipated spec changes >> >> Open questions about a feature may be a source of future web compat or >> interop issues. Please list open issues (e.g. links to known github issues >> in the project for the feature specification) whose resolution may >> introduce web compat/interop risk (e.g., changing to naming or structure of >> the API in a non-backward-compatible way). >> >> >> Link to entry on the Chrome Platform Status >> https://chromestatus.com/feature/6242983812268032 >> >> Links to previous Intent discussions Intent to prototype: >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/B1ED49A6-31BF-4D28-89B3-D2973F9F12DA%40gmail.com >> >> This intent message was generated by Chrome Platform Status >> <https://chromestatus.com/>. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "blink-dev" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6B4E754E-49E5-47DE-B473-4AC40FC0C599%40gmail.com >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6B4E754E-49E5-47DE-B473-4AC40FC0C599%40gmail.com?utm_medium=email&utm_source=footer> >> . >> >> -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/411a7692-6ebf-483e-8700-669569e1c6a7n%40chromium.org > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/411a7692-6ebf-483e-8700-669569e1c6a7n%40chromium.org?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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