Implement source for postMessage events
Also make similar-origin iframes access their newly loaded document as soon as the new document is created. This should allow tests that check the event.source property to run correctly.
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- [x] These changes fix#22499 and fix#12715 and fix#22514.
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Serialize the children of void html elements as empty strings
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Construct URLSearchParams from array or object
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- [x] These changes fix#22554, fix#22556 and also fix#22557
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Remove sync constellation -> embedder communication
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Enable upstream bluetooth tests
I enabled bluetooth WPT tests
But I'm still worry that a lot of tests failed (more than 150). I decreased them by
```
prefs: ["dom.bluetooth.enabled:true"]
```
But it's still a lot of failed tests
Checks
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Fix DuckDuckGo HTML search
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Initialize iframe viewport immediately
This is probably a significant cause of unstable test results, and it finally bothered me enough to fix it. The solution isn't great for performance (a sync layout query every time a iframe is added to a document), but performance needs to follow correctness.
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Improve implementation of media resource fetch algorithm
I have been observing inconsistent behaviors with my local tests depending of the media asset being played. I figured that we had these issues:
- We were setting the player EOS as soon as we got the first [process_response_eof](1046ae58a1/components/script/dom/htmlmediaelement.rs (L1596)). This is fine only if there is a single request. But that's not the case for multiple range requests or for seeks. Setting the player EOS makes the player appsrc reject any new buffers, and that breaks playback. Figuring out when is the right time to set the player EOS won't be a straight forward task, so my suggested fix for now is to simply not set it for now. It is a cleanup step that it would be nice to have but it is not mandatory.
- We were setting the input size more than once for multiple range requests and with the incorrect value. The fix uses the `content-length` or the `content-range` headers for single and range requests respectively.
- We were moving to the HaveEnoughData state if a fetch request succeded but no data was fetched from the network.
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Add onmessageerror to WindowEventHandler
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