Majority of build_gecko.rs is just the straightforward conversion from
regen.py. There are two differences that:
1. Side in whitelist is changed to mozilla::Side
2. std::atomic__My_base is added to opaque types for Windows
Add Element.style support for stylo
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This is the Servo side change of [bug 1294299](https://bugzilla.mozilla.org/show_bug.cgi?id=1294299) which has been reviewed by @heycam, @emilio, and @SimonSapin.
This should not be merged until the Gecko side change gets merged into mozilla-central.
r? @heycam
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Stop passing now-unrecognized --no-type-renaming to rust-bindgen.
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r? @emilio
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It is called nsstring_vendor since libgkrust already depends on nsstring, and
we can't have two crates with the same name in-tree. We can't directly depend
on the in-tree one since this will stop independent `./mach build-geckolib` builds from working.
MozReview-Commit-ID: CR4tHgzXWFZ
Run bindings tests with whole crate
We currently run bindgen's autogenerated `#[test]` blocks directly on the structs files.
That is, after generating them, we run `rustc --test` on them. This works fine for now, but
if you want to refer to types defined outside of these files (e.g. in https://bugzilla.mozilla.org/show_bug.cgi?id=1309165),
the tests are broken.
This puts a `cargo test -p style` in `./mach test-stylo`. I disabled doctests because they were failing (unable to find the `ns!()` and `atom!()` macros), and I couldn't figure out why -- will investigate in a later bug.
r? @emilio
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