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
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Currently properties that are discretely animated cannot be
transitioned. Now that TransitionProperty should only be used for
transitions, we can redefine it to treat non-transitionable properties
as unsupported. This should allow us to simplify the code and make it
more self-documenting (e.g. making TransitionProperty actually relate to
transitions).
Logical properties will be animatable (with discrete type), but for now
it is still non-animatable, so we assign "None" to the animation_type.
MozReview-Commit-ID: HRYwIhKkpoW
For keyword-typed properties with aliases but no extra_specified values,
the storage of the specified and computed values could be the same,
since value aliases are resolved at parse time. But to prevent
computed_value::T::parse from recognizing these aliases, we keep the
specified and computed value types distinct.
Extend Servo's @page parsing to match Gecko's CSS 2.2 behavior, where only
margin properties are allowed in an @page rule. Other properties are ignored.
MozReview-Commit-ID: IPYUlnkLYSb
animation_type takes following values:
animation_type="none" for non-animatable properties
animation_type="normal" for animatable properties
animation_type="discrete" for animatable but discrete type of animations
We use string value to distinguish the case where no animation_type is
specified.
animation_type="discrete" will be used in a subsequent patch to make a property
animatable as discrete type.
This allows us to control whether the catchall case in the match expression
that maps Gecko const to Servo enum will be generated.
MozReview-Commit-ID: L65IjTONdfl
