In BC event-loop, only run tasks related to fully-active documents
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Make webgl behave better with session history
This prevents the compositor from animating pages that are not actually visible, so pages using webgl do not needlessly impact the performance of the rest of the browser. Additionally, this fixes a problem that was alluded to in [this code](b5228c098b/src/draw_buffer.rs (L282-L285)), causing Servo to delete arbitrary resources when a GC occurred in content that used three.js.
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- [x] These changes fix#22987 and fix#22977 and fix#20934 and fix#20953 and fix#20930 and fix#20950 and fix#20924
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Fix replacement logic when navigating nested browsing contexts
These changes also fix a bug where traversing the session history in a nested browsing context did not update the iframe's contentWindow appropriately.
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- [x] These changes fix#22996
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Added AudioTrack, AudioTrackList, VideoTrack, and VideoTrackList inte…
…rfaces
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Added AudioTrack, AudioTrackList, VideoTrack, VideoTrackList, and TrackEvent interfaces to support multiple media tracks.
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Implement historical returnValue attribute for Event interface
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Implementation of `returnValue` attribute for Event interface.
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Add optional annotations for initEvent method of Event interface
Added `optional` and default values to parameters `bubbles` and `cancelable` of `initEvent` of `Event`.
I tried to update test results, but there seem to be no differences at all.
I checked similar code where `optional` is used, and there seems to be no special handling in Rust. If that is not the case with this issue, please let me know and I'll commit more follow-ups.
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Implement HTMLMediaElement muted and defaultMuted attributes
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PR for issue #22291
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Add test for contentDocument behaviour during parsing
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- [x] These changes fix#22503
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Implement the target attribute for HTMLAreaElement
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