Stringify unknown JavaScript objects in global exception handlers
When turning DOM exceptions into `ErrorInfo` always try to stringify
the JavaScript value, even if it's an object that isn't a `DOMException`
or native exception. This means that exceptions that extend the `Error`
prototype are now stringified. The result is that test output for WPT
global assertion failures is more useful. For instance for the test
include-frames-from-child-same-origin-grandchild.sub.html:
Before:
```
uncaught exception: unknown (can't convert to string)
```
After:
```
uncaught exception: Error: assert_equals: expected 4 but got 3
```
---
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- [x] There are tests for these changes.
When turning DOM exceptions into `ErrorInfo` always try to stringify
the JavaScript value, even if it's an object that isn't a `DOMException`
or native exception. This means that exceptions that extend the `Error`
prototype are now stringified. The result is that test output for WPT
global assertion failures is more useful. For instance for the test
include-frames-from-child-same-origin-grandchild.sub.html:
Before:
```
uncaught exception: unknown (can't convert to string)
```
After:
```
uncaught exception: Error: assert_equals: expected 4 but got 3
```
WebXR Layers update WebIDL
<!-- Please describe your changes on the following line: -->
Updates the WebXR Layers WebIDL. Implements the "update the pending layers state" algorithm from the layer spec.
---
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- [x] `./mach test-tidy` does not report any errors
- [x] There are updated tests for these changes
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Return Option for Window's layout channel
<!-- Please describe your changes on the following line: -->
`Window::layout_chan()` now returns an `Option<Sender<Msg>>`, returning `None` if the window is dead.
FIX#26969FIX#26429FIX#21208FIX#19092FIX#22559FIX#22584FIX#22652
---
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- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#23053
<!-- Either: -->
- [x] There are tests for these changes
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This is my first contribution, I'm trying to figure things out!
This fix passes the test case shown in #23053, however I don't know what the behavior should be in `Document` and `ScriptThread` if `Window::is_alive()` is false : simply ignore it, don't do anything ? Or is this something that should not happen now that we return false in `Window::force_reflow()` ?
I'm not sure about the directory where the test case should go, any advice?
animations: Finish support for fractional iteration counts
This change also improves support for creating animations with negative
delays, as that is necessary to test support for fractional iteration
lengths.
Fixes: #14858
<!-- Please describe your changes on the following line: -->
---
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- [x] These changes fix#14858
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This change also improves support for creating animations with negative
delays, as that is necessary to test support for fractional iteration
lengths.
This change also adjusts existing Servo animation tests which assumed
that advancing to the exact moment of the end of the animation would be
considered "before the end." With this change, this moment is "after the
end."
Fixes: #14858
Silently ignore failures to queue websocket tasks
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#26977
- [x] There are tests for these changes
