Implement HTMLFormElement.requestSubmit()
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This PR contains an implementation of [HTMLFormElement.requestSubmit()](https://html.spec.whatwg.org/multipage/forms.html#dom-form-requestsubmit)
This is literally my first hundred lines of Rust code, so if I crossed a few sacred lines here and there, please go easy on me :)
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There are two tests that still fail because we don't support `:invalid` CSS selector (see #10781). I verified that they pass if you change them to not use `:invalid`. Should be unlocked by #26729.
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Fix typo
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Fix a typo in the selectors crate README.
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Implement GPUBuffer.getMappedRange()
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The new fields added to `GPUBuffer` are-
1. `mapping`- This is the buffer data. This is not directly exposed to user and is refcounted to keep track of the number of `ArrayBuffer`s that point to the content in it.
2. `mapping_range`- The range of mapped portion of the GPUBuffer.
3. `mapped_ranges`- Ranges that the various `ArrayBuffer`s expose to the user. Used for validation of `getMappedRange()`
4. `js_buffers`- Actual `ArrayBuffer`s that expose the data to the user. They are detached on unmap.
5. `map_promise`- Promise that represents the pending mapping.
This PR also changes the order of the exit of threads. WebGL thread is responsible for sending `Exit` message to WebRender and therefore should be exited after WebGPU threads.
r?@kvark @jdm
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build(deps): bump unicode-width from 0.1.7 to 0.1.8
Bumps [unicode-width](https://github.com/unicode-rs/unicode-width) from 0.1.7 to 0.1.8.
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Update Servo logo files
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Update of #25846. Add new Servo logo files and remove some old versions.
Closes#25846
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[UWP] Key events
This is the initial work required for proper keyboard events.
The text controller implementation is very basic, just enough to show the virtual keyboard when it's needed, and have basic key events.
Ensure clean shutdown of JS threads
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FIX https://github.com/servo/servo/issues/26685
FIX https://github.com/servo/servo/issues/26996
FIX https://github.com/servo/servo/issues/9672FIX#27027
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