Permissions API and WebBluetooth integration
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This implements the [Permissions API](https://w3c.github.io/permissions/) spec.
Also includes the WebBluetooth related implementation for this.
There are some know issues:
- [ ] If the descriptor name is invalid [this](https://gist.github.com/dati91/7a6a0a563d90f49ba5a351e48c5b626b#file-permissionstatusbindings-rs-L323) will throw an error, rather that return it and we could handle it.
- [x] The [environment settings object](https://html.spec.whatwg.org/multipage/webappapis.html#environment-settings-object) is not implemented in servo and the spec rely on it.
- [x] There is a popup in the implementation which prevent us to add wpt test, we should figure out a way to make it work
- [ ] The allowedDevice's allowed_services attribute is not used in our implementation, because we store these in the lower level, not in the dom side.
- [ ] We think the bluetooth revoke function will need some more work, but the problem is the spec needs clarifications on that part.
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- [X] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).
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- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because
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It is only used once, in a case where it can never have an effect: in case
for it to do something, both returnType.isDictionary() and
returnType.isGeckoInterface() would need to be true at the same time.
Use Heap instead of UnsafeCell in DOM reflectors
The previous `Reflector` implementation did not use post barriers, so we could crash when storing nursery objects in a `Reflector` structure that were later moved out of the nursery.
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#15085
- [X] There are tests for these changes
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Remove usage of phf_macros.
It’s a compiler plugin that uses unstable compiler APIs that are not on a path to stabilization.
With this changes, there is one less thing that might break when we update the compiler. For example: https://github.com/sfackler/rust-phf/pull/101
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---
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).
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- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because _____
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Make WebIDL callbacks permanently rooted
This replicates the same model that Promise uses right now, because it requires less thinking than coming up with something else.
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#14447
- [ ] There are tests for these changes
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