Preserve units in computed Angle
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It was converting all angles to radians before. But other browsers preserves the angle units. Fixed that behavior.
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- [X] These changes fix#16594 and [Bug 1360659](https://bugzilla.mozilla.org/show_bug.cgi?id=1360659)
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Note that, while the comment is correct that there is a fair amount of -moz-any
usage in the UA sheet, it's always used as an ancestor selector, and thus ignored
for our purposes. Nevertheless, it's straightforward enough to support properly,
so we do that here.
MozReview-Commit-ID: Kz1yNfPUIaP
1. We add a new arm to TransitionProperty, TransitionProperty::Unsupported,
which contains an Atom, so it's better to remove the Copy trait from
TransitionProperty.
2. TransitionProperty::Unsupported(Atom) represents any non-animatable, custom,
or unrecognized property, and we use Atom to store the ident string for
serialization.
If there are multiple prefixed/non-prefixed @keyframes with the same name;
* non-prefixed rule overrides earlier rules.
* prefixed rule overrides earlier prefixed rules.
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.
stylo: Bug 1353628 - Support shorthand properties for CSS Transition.
These patches add shorthand properties into TransitionProperty, so we can parse the shorthand properties properly and create transitions for them.
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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 1353628
- [X] There are tests for these changes
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In order to make TransitionProperty::parse() also work on shorthands, we
should add shorthands into TransitionProperty, and add the arms in other
functions which match TransitionProperty.
MozReview-Commit-ID: KFd26KcQf3N
