Hi Noam,
Ack on the OT bugs (been there...); could you comment on any substantial
progress in the following areas:
* Draft spec (early draft is ok, but must be spec-like and associated
with the appropriate standardization venue, or WICG)
* TAG review (see exceptions)
* bit.ly/blink-signals requests
* Outreach for feedback from the spec community
* WPT tests
thanks,
Mike
On 11/16/23 1:26 PM, Noam Rosenthal wrote:
Contact emails
nrosent...@chromium.org
Explainer
https://github.com/w3c/longtasks/blob/main/loaf-explainer.md
Specification
https://github.com/w3c/longtasks/blob/main/loaf-explainer.md
Summary
We propose extending the "Long Animation Frame Timing" experiment.
The experiment has several active participants with multiple URLs,
however due to early bugs in the OT implementation (mostly how the
origin trial/feature flag logic was configured in chromium) it was out
for a slow start.
In addition, it's a "deep" feature with many edge cases, and the
origin trial participants are really helping us understand the ins and
outs before we ship to a wider audience, but it takes time to reach
conclusive feedback.
Proposing to extend it to 3 more milestones, to account for the
milestones we lost due to OT churn.
Blink component
Blink>PerformanceAPIs
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EPerformanceAPIs>
TAG review
https://github.com/w3ctag/design-reviews/issues/911
TAG review status
Pending
Risks
Interoperability and Compatibility
/Gecko/: Positive Not yet a formal signal but showed positive interest
at WG call.
/WebKit/: No signal
/Web developers/: Positive
(https://twitter.com/jebbacca/status/1653355406368952321) Wix,
Taboola, and others have already experimented with this in Canary.
Strong excitement from several partners at We Love Speed conference.
/Other signals/:
Ergonomics
It should work well with other performance timeline entries, mainly
event-timing/INP.
Security
This feature exposes rendering time to iframes, which might be
cross-origin (same-process). However, this is anyway observable, by
using requestAnimationFrame. Note that everything in this feature is
same-process.
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?
Goals for experimentation
Ongoing technical constraints
None
Debuggability
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
LongAnimationFrameTiming
Requires code in //chrome?
False
Tracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1392685
Launch bug
https://launch.corp.google.com/launch/4244858
Estimated milestones
OriginTrial desktop last 123
OriginTrial desktop first 115
OriginTrial Android last 123
OriginTrial Android first 115
OriginTrial webView last 123
OriginTrial webView first 115
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/6118675067699200
Links to previous Intent discussions
Intent to prototype:
https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJn%3DMYbX%3DEOAwkEvDQY9Ja1trSXLFtM1XNsuw1Lr2QR88%2BTnqw%40mail.gmail.com
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
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