Enable cookies related wdspec tests
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Test more XR things
This tests all the things that are currently possible and useful to test.
I'm going to avoid expanding rust-webvr's mock functionality for now, instead growing it in rust-webxr
Things that we support which aren't tested yet:
- viewport values (there's no way in the xrtest api to mock these yet)
- input (no support in rust-webvr for mocking)
- floor spaces (no way in the xrtest api to mock these yet)
r? @asajeffrey
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Added missing NavigatorId attributes
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Add the missing attributes from https://html.spec.whatwg.org/multipage/system-state.html#navigatorid
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Update to latest WebXR spec, add tests
This pulls in a bunch of the newer stuff. I think with this PR we're spec-compatible for the things we support.
<s>For testing I'm likely going to write custom tests rather than adapting the existing ones, as a first pass, but when I start adapting the existing ones these changes will make it smoother.</s>
This PR also adds some pretty simple tests that deal with core functionality.
r? @jdm @asajeffrey
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