[Webkit-unassigned] [Bug 203088] WebAnimation should never prevent entering the back/forward cache

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=203088

--- Comment #2 from Antoine Quint <graouts at apple.com> ---
So to fix we need to:

- remove WebAnimation::shouldPreventEnteringBackForwardCache_DEPRECATED()
- subclass ActiveDOMObject::suspend() and ActiveDOMObject::resume()
- queue events between calls to suspend() and resume() or use a WindowEventLoop (though I'm not sure that is always possible since a WebAnimation may not be associated with a Document directly)
- don't resolve promises while the document is suspended

We might need something similar for DocumentTimeline, although it's possible that already happens.

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