Rework MediaType to be an atom-based struct instead of an enum.
MozReview-Commit-ID: 1Tfrs9PBkhA
<!-- Please describe your changes on the following line: -->
https://bugzilla.mozilla.org/show_bug.cgi?id=1371395https://reviewboard.mozilla.org/r/163194/
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [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).
<!-- Either: -->
- [X] There are tests for these changes OR
- [ ] These changes do not require tests because _____
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/18024)
<!-- Reviewable:end -->
Remove style/testing feature
We added this because a year ago we had no reliable Gecko CI. This meant that Gecko-only properties needed to be tested *somehow*, and we solved that by making it so that for unit tests we compile all properties, not just the servo ones.
This was useful back then, but I don't think we need this anymore. We have reliable Gecko CI, and all the gecko-only stuff we tested is adequately handled by the properties-database parsing mochitests. It's a bit of annoying cruft that just complicates things; we probably should remove it.
r? @emilio or @SimonSapin
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/17984)
<!-- Reviewable:end -->
Avoid adding id selectors that are in the rule hash keyed by that ID to the list
of revalidation selectors.
This partially fixes bug 1369611 (we could look at the rule hash itself to avoid
inserting some more into the list of revalidation selectors).
I've left the Invalidation stuff on its own since that's more complex, but I
think this may help a bit (perhaps not too much though) with the slow rebuild
times.
selectors: Don't track class and id ancestor hashes in quirks mode.
It's incorrect to track classes and id selectors in a quirks-mode document,
since they should match case-insensitively.
Bug: 1382812
Reviewed-by: bholley
MozReview-Commit-ID: 4uvrfYsWb1v
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/17806)
<!-- Reviewable:end -->
It's incorrect to track classes and id selectors in a quirks-mode document,
since they should match case-insensitively.
Bug: 1382812
Reviewed-by: bholley
MozReview-Commit-ID: 4uvrfYsWb1v
The alias is left there temporarilly and will be removed completely in a later commit where
also components/style/gecko/generated/structs_{debug|release}.rs are re-generated (they still
use the old alias).
Stylist accessors
<!-- Please describe your changes on the following line: -->
Add accessor methods for the `device` and `ruleset` fields in the `Stylist` struct.
---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: -->
- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#16857 (github issue number if applicable).
<!-- Either: -->
- [X] There are tests for these changes
<!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.-->
<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->
<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/16968)
<!-- Reviewable:end -->
This improves cache locality and reduces allocations during parsing.
Note that this reverses the iteration order within a sequence of simple selectors,
but that shouldn't matter.
From https://bugzilla.mozilla.org/show_bug.cgi?id=1347719
This effectively combines the discriminants of the two enums and reduces the
size of PropertyDeclaration by one word.
MozReview-Commit-ID: 9rCRiSVZTQT
