Fetch: ensure consistency between response, done-chan, and cache state.
This ensures that when a cached response is not used because it requires revalidation, the done chan is set back to `None`(since the cache might have set it to `Some` when constructing the response requiring revalidation).
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Websocket: use ipc router to handle ws dom-action messages
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Use the ipc router as opposed to spawning a dedicated thread.
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Use RequestBuilder for CORS preflight fetch
Just found this can be improved with the request builder!
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Add WebGLSampler support
Reference: https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.13
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cc @jdm @zakorgy
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Allow using CORS filtered image responses as WebGL textures
More specifically, this makes the "is this image same origin?" check consider the CORS status of the original response, rather than relying on an overly-strict "is this image's response's URL same-origin with a particular global?" check. To do this, we make the image cache double keyed based on the requested URL as well as the requesting origin, and store the CORS status of the eventual response with the final image that eventually gets sent to the HTMLImageElement consumer.
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style: Use consistent naming and shared code for out-of-flow stuff.
There was already code to check abspos / floats. No need to duplicate code with
different names as ee17eedf3a did.
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response: remove text from default statusCode
According to the [specification](https://fetch.spec.whatwg.org/#concept-response-status-message) the text of the default statusCode text should be empty.
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Cache crossorigin test
This adds a test for #24356 to ensure that we don't regress our cache behaviour.
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Use unfiltered response body when replicating body of cached responses.
The amount of time it took me to track this down makes me wonder if there would be a better way of representing response bodies and filtered responses.
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Remove [PrimaryGlobal]
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Fix intermittent macOS reftest failures
CTCreateFontWithName intermittently returns the wrong font for a given postscript name. These changes rely on obtaining a font descriptor, using it to get the path to the actual font file on disk, getting the bytes that make up the font, and using Core Graphics to create a font handle and obtaining the Core Graphics font from the CGFont reference. This is the same strategy that font-kit uses.
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