This is a verbatim copy of the source at [1]. It won't compile on stable rust,
but I'm including it here to make the changes clear.
[1] https://doc.rust-lang.org/src/alloc/arc.rs.html
MozReview-Commit-ID: XEbOK4fXQX
Make stylo support mozmm unit
<!-- Please describe your changes on the following line: -->
This issue is reported at https://bugzilla.mozilla.org/show_bug.cgi?id=1356104. Mozmm is defined at https://developer.mozilla.org/zh-TW/docs/Web/CSS/length.
---
<!-- 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 [Bug 1356104](https://bugzilla.mozilla.org/show_bug.cgi?id=1356104)
<!-- Either: -->
- [ ] There are tests for these changes OR
- [X] These changes do not require tests because the tests already exist in Gecko.
<!-- 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/16688)
<!-- Reviewable:end -->
Stop using unstable slice_patterns feature
cc #5286
---
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [ ] There are tests for these changes OR
- [x] These changes do not require tests because no functionality changed
<!-- 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/16681)
<!-- Reviewable:end -->
Preserve units in computed Angle
<!-- Please describe your changes on the following line: -->
It was converting all angles to radians before. But other browsers preserves the angle units. Fixed that behavior.
---
<!-- 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#16594 and [Bug 1360659](https://bugzilla.mozilla.org/show_bug.cgi?id=1360659)
<!-- 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/16674)
<!-- Reviewable:end -->
Servo changes for bug 1347409
bug 1347409 is introducing a fallback type for SVG paint servers so that we can distinguish between url(something) and url(something) none and serialise those cases correctly. When we get a url(something) color we need to set the mFallbackType to eStyleSVGFallbackType_Color.
This change has already been reviewed in https://bugzilla.mozilla.org/show_bug.cgi?id=1347409
---
<!-- 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: -->
- [ ] There are tests for these changes OR
- [X] These changes do not require tests because they are covered by tests that will land in gecko as part of the rest of the patch there.
<!-- 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/16665)
<!-- Reviewable:end -->
My measurements are inconclusive as to whether this really moves the
needle, but it seems like the right way to do it in any case.
MozReview-Commit-ID: 7OuCc2aQ7jH
Right now in the common case we're doing twice the work during stylist update,
and also checking is_html_element_in_html_document twice during lookup. This
patch aligns us with what Gecko does.
MozReview-Commit-ID: D4TyG30BP8C
This makes things more readable, and easier to profile (since the Gecko
profiler doesn't have any intra-function granularity, so I tend to make
helpers non-inline when drilling down into what's expensive).
It allows us to iterate the selector list once, which could help cache locality
for rules with many selectors.
MozReview-Commit-ID: GdFtgrbYCIu
Remove IndexSizeError in CanvasRenderingContext2D::drawImage
<!-- Please describe your changes on the following line: -->
The current spec don't expect the IndexSizeError if the rectangle is empty.
---
<!-- 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#10600 (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/16658)
<!-- Reviewable:end -->
