Whilst working with variants of the bloom-basic test for Stylo perf
profiling, I noticed that it is easy to cause Firefox to segfault on DOMs
with a depth of more than about 1500 elements. This fix limits the use of
tail recursion to 150 elements. This isn't externally observable to content
-- we're still completely correct, just not using tail recursion any more.
stylo: Bug 1375812 - Build an identity matrix for InterpolateMatrix.
We have to build an identity matrix while add_weighted() between InterpolateMatrix and none transform in some cases, e.g. trigger a transition from a mid-point of another transition to none.
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix [Bug 1375812](https://bugzilla.mozilla.org/show_bug.cgi?id=1375812).
- [X] These changes do not require tests because we have tests in Gecko already.
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We have to build an identity matrix while add_weighted() between
InterpolateMatrix and none transform in some cases, e.g. trigger a
transition from a mid-point of another transition to none.
Make '-moz-context-properties' support 'fill-opacity' and 'stroke-opacity'.
Enable 'fill-opacity' and 'stroke-opacity' for '-moz-context-properties' to make the context-{fill|stroke}-opacity work in SVG-as-an-image.
---
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- [x] These changes fix [Bug 1373159](https://bugzilla.mozilla.org/show_bug.cgi?id=1373159)
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Convert -webkit-linear-gradient coordinate system for Stylo
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This patch will fix the -webkit-linear-gradient direction issue in Stylo. I decided to NOT change the behavior of Servo, because according to the webcompat spec the webkit prefixed version should just be an alias of non-prefixed version. But we might want to remove support for old syntax like "-webkit-linear-gradient(top, ...)" (without "to"), because they are not in the spec anymore.
The Gecko layout system use different coordinate systems for prefixed and non-prefixed version, so I did a conversion, but for Servo I keep the modern version only.
Since I believe we should not support old syntax in Servo, so I'm not going to put the test in Servo. I'll submit my test cases to the Gecko wpt test instead.
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- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix [Bug 1372821](https://bugzilla.mozilla.org/show_bug.cgi?id=1372821)
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stylo: Implement font-language-override descriptor for @font-face rule
Generally we use computed values for `@font-face` rule descriptors but that descriptor is a bit different than the others in gecko side. It accepts strings instead of unsigned integer(which is computed value of this property). So we had to use SpecifiedValue for that in here.
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- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix [Bug 1355364](https://bugzilla.mozilla.org/show_bug.cgi?id=1355364)
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style: Cleanup traversal.rs
Mostly reflowing comments that have become too long or two short with
refactorings, and using consistent indentation.
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