Implement ::first-line support in stylo
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Fixes Gecko bug 1324619.
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Add message suffixes to stylo error reports.
This is the Servo-side part of https://bugzilla.mozilla.org/show_bug.cgi?id=1381137. This allows us to add the "Declaration dropped" or "Skipped to next declaration" messages after relevant CSS errors that are reported.
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Revert "Backed out changeset b10e6ba9cbdb because gecko part had to b…
…e backed out."
This reverts commit b96d96d448.
The fix on the Gecko side is trivial, and I can land it after this lands.
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We fail bindgen layout tests on 32 bit because FontComputationData does not accurately reflect the size/alignment of the rust-side replacement.
We move it to the end so that alignment is more straightforward, and
use a NonZero enum so that the representation can be more accurately
handled on the C++ side.
MozReview-Commit-ID: 8GlSma3Wl9W
This patch also removes the duplication of style contexts during the
restyle, because otherwise pointer equality of ServoComputedValues stops
holding (and we assert on that in a few places)
Make Servo's rounding of image-orientation values agree with Gecko's,
and pass orientations directly as an enum instead of as angles.
Depends on a Gecko change to be subsequently landed in m-c.
Make Servo's rounding of image-orientation values agree with Gecko's, and pass orientations directly as an enum instead of as angles.
Has been reviewed: https://reviewboard.mozilla.org/r/155336/
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Bugzilla issue: https://bugzilla.mozilla.org/show_bug.cgi?id=1355380
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