Store unset keyword as specified value
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`unset` keyword value should *not* be converted to something else during parsing. It is a specified-value time value, which should be preserved until computation.
WIP patch for seeing what tests would be broken and / or if there is necessary to add any new test.
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Remove the unused dependency of style to plugins.
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Stylo: implement -moz-orient
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https://developer.mozilla.org/en-US/docs/Web/CSS/-moz-orient
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It turns out that it's problematic to embed ThreadLocalStyleContext within
LayoutContext, because parameterizing the former on TElement (which we do
in the next patch) infects all the traversal stuff with the trait parameters,
which we don't really want.
In general, it probably makes sense to use separate scoped TLS types for
the separate DOM and Flow tree passes, so we can add a different ScopedTLS
type for the Flow pass if we ever need it.
We also reorder the |scope| and |shared| parameters in parallel.rs, because
it aligns more with the order in style/parallel.rs. I did this when I was
adding a TLS parameter to all these functions, which I realized we don't need
for now.
Change property id of moz-prefixed properties to match their name
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This is the servo part of [bug 1311870](https://bugzilla.mozilla.org/show_bug.cgi?id=1311870) which has been reviewed by @heycam.
r? @heycam
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stylo: Fix assertion for unresolvable url
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This is the Servo part of [bug 1321176](https://bugzilla.mozilla.org/show_bug.cgi?id=1321176), which has been reviewed by @emilio, @Manishearth, and @heycam.
r? @Manishearth
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Move {lower,upper}-alpha to extra_servo_values
These two counter styles are supported via @counter-style rules in UA style sheet in Gecko.
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Fix linear gradient's specified form #13892
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WIP for #13892
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Stylo: Basic support for grid-{row,column}-{start,end}
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This allows us to get rid of a bunch of lifetimes and simplify a lot of code. It
also lets us get rid of that nasty lifetime transmute, which is awesome.
The situation with thread-local contexts is still suboptimal, but we fix that in
subsequent patches.
