Implement rejectionhandled event
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#22006 .
- [x] There are more tests `PASS`ed for these changes
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Assign a name to iframes when loading the initial about:blank
Before, it would assign the name too late, causing scripts (which will not wait for another tick) to accidentally spawn pop-up windows instead of loading into the iframe.
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#21886
- [x] There are tests for these changes
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Implement unhandledrejection event
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#15412
- [x] There are tests for these changes
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Before, it would assign the name too late,
causing scripts (which will not wait for another tick)
to accidentally spawn pop-up windows instead of loading
into the iframe.
Thread the status through navigation redirects
This is necessary because status codes affect whether the redirect is done with the same HTTP method or a different one.
This is part of #21886, but there's also a flaw in how iframes are handled that is causing the redirect to take over the entire window, so this commit doesn't entirely fix slither.io.
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- [x] `./mach test-tidy` does not report any errors
- [x] These changes are part of #21886, but more changes are needed to actually fix it
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Make layout use available image data before querying the image cache.
These changes make layout more efficient for any page which contains images that have already loaded, since it does not require synchronously querying the image cache thread for each image present. It also makes reloading a page actually display the images that are already in the image cache.
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#21919
- [x] There are tests for these changes
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