What was the result of the origin trial? Did you get any useful feedback?
/Daniel
On 2022-06-27 22:15, 'Max Curran' via blink-dev wrote:
Contact emails
ryanst...@chromium.org, curran...@chromium.org
Explainer
https://github.com/WICG/responsive-image-client-hints/blob/master/Viewport-Height-Explainer.md
<https://github.com/WICG/responsive-image-client-hints/blob/master/Viewport-Height-Explainer.md>
Specification
https://wicg.github.io/responsive-image-client-hints/#sec-ch-viewport-height
<https://wicg.github.io/responsive-image-client-hints/#sec-ch-viewport-height>
Summary
Currently, Responsive Image Client Hints provide a way for origins to
obtain the viewport’s width. However, no such attribute exists for
viewport height. We’ve observed that to optimize the loading of
content that appears in viewport, it is essential for the origins to
adapt HTML response based on viewport height.
Blink component
Blink>Loader
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ELoader>
TAG review
https://github.com/w3ctag/design-reviews/issues/615
<https://github.com/w3ctag/design-reviews/issues/615>
TAG review status
Issues addressed
Link to origin trial feedback summary
https://github.com/WICG/responsive-image-client-hints/issues
Risks
Interoperability and Compatibility
Gecko: No signal
(https://github.com/mozilla/standards-positions/issues/79
<https://github.com/mozilla/standards-positions/issues/79>)
WebKit: Negative
(https://lists.webkit.org/pipermail/webkit-dev/2020-November/031576.html
<https://lists.webkit.org/pipermail/webkit-dev/2020-November/031576.html>)
Likely to be neutral based on discussion in
https://github.com/mozilla/standards-positions/issues/79
<https://github.com/mozilla/standards-positions/issues/79>
Web developers: No signals
Other signals:
Activation
None
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
N/A
Will this feature be supported on all six Blink platforms
(Windows, Mac, Linux, Chrome OS, Android, and Android WebView)?
Yes
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
kViewportHeightClientHintHeader
Requires code in //chrome?
False
Tracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1184863
<https://bugs.chromium.org/p/chromium/issues/detail?id=1184863>
Launch bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1184862
<https://bugs.chromium.org/p/chromium/issues/detail?id=1184862>
Estimated milestones
OriginTrial desktop last
104
OriginTrial desktop first
100
OriginTrial Android last
104
OriginTrial Android first
100
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/5646861215989760
<https://chromestatus.com/feature/5646861215989760>
Links to previous Intent discussions
Intent to Experiment:
https://groups.google.com/a/chromium.org/g/blink-dev/c/Q2wcqY2UyNs/m/rPePdX_NBwAJ
<https://groups.google.com/a/chromium.org/g/blink-dev/c/Q2wcqY2UyNs/m/rPePdX_NBwAJ>
Intent to Extend Experiment:
https://groups.google.com/a/chromium.org/g/blink-dev/c/kftmeKVDjE8/m/GlaCr5PYEQAJ
<https://groups.google.com/a/chromium.org/g/blink-dev/c/kftmeKVDjE8/m/GlaCr5PYEQAJ>
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
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