closes #25833

Implemented the `mapReadAsync` and fixed the `unmap` functions of `GPUBuffer`.
Added `mapped` internal slot for tracking the ArrayBuffer/Promise.
Added more states to the `GPUBufferState` enum.

…8e58d3cf7

…hearth

Per fetch file token for blob url

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Depends on #25724

First step of #25226

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- Using new asset filename structure (lower case, underscore, resolution)

Implement mapReadAsync function of GPUBuffer

Implemented the `mapReadAsync` and fixed the `unmap` functions of `GPUBuffer`.
Added `mapped` internal slot for tracking the ArrayBuffer/Promise.
Added more states to the `GPUBufferState` enum.

<!-- Please describe your changes on the following line: -->

---
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- [x] `./mach test-tidy` does not report any errors
- [x] These changes addresses a part of #24706

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cc @kvark @jdm @zakorgy
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- Using new asset filename structure (lower case, underscore, resolution)

- Using new asset filename structure (lower case, underscore, resolution)

Remove azure canvas backend

closes #25833

Issue description: Now that the raqote backend has reached feature parity and been enabled by default, we should remove the unused azure backend entirely.

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- [x] These changes fix #25833

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Sync WPT with upstream (25-02-2020)

Automated downstream sync of changes from upstream as of 25-02-2020.
[no-wpt-sync]
r? @servo-wpt-sync

…777711564

Refactor CanvasRenderingContext2D.arc() and .ellipse()

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Refactor `arc()` and `ellipse()` to make use of `lyon_geom::Arc` for approximating an arc with quadratic bezier curves.

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- [x] These changes fix part of #25331

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Sync WPT with upstream (26-02-2020)

Automated downstream sync of changes from upstream as of 26-02-2020.
[no-wpt-sync]
r? @servo-wpt-sync

Update webxr for openxr VR support.

…e0310e7c0

…wpt-sync

Sync WPT with upstream (27-02-2020)

Automated downstream sync of changes from upstream as of 27-02-2020.
[no-wpt-sync]
r? @servo-wpt-sync

- Using new asset filename structure (lower case, underscore, resolution)

- Using new asset filename structure (lower case, underscore, resolution)

- Using new asset filename structure (lower case, underscore, resolution)