[Webkit-unassigned] [Bug 211232] [Web Animations] imported/w3c/web-platform-tests/web-animations/timing-model/timelines/update-and-send-events.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=211232

--- Comment #3 from Antoine Quint <graouts at webkit.org> ---
There's some funky code in DocumentTimeline::currentTime() which leads to slightly different timing for two DocumentTimelines. I think we want to move the notion of the cached current time up to DocumentTimelinesController, or maybe just removing this block of code will work:

    auto& mainDocumentTimeline = m_document->timeline();
    if (&mainDocumentTimeline != this) {
        if (auto mainDocumentTimelineCurrentTime = mainDocumentTimeline.currentTime())
            return *mainDocumentTimelineCurrentTime - m_originTime;
        return WTF::nullopt;
    }

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