Check snapshot id/class flags before looking for those attributes.
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Most elements don't have classes or IDs.
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style: Refactor the cascade function.
The `cascade_primary_or_pseudo` function was nice when we shared more code, but
right now I think it just makes it harder to understand what's going on.
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The `cascade_primary_or_pseudo` function was nice when we shared more code, but
right now I think it just makes it harder to understand what's going on.
stylo: Continue to propagate quirks mode information to Servo
r=bholley in bugzilla
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- [X] These changes fix [Bug 1364746](https://bugzilla.mozilla.org/show_bug.cgi?id=1364746)
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Don't require style sharing cache invalidation for :dir
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stylo: Pass Cached ImageValue from stylo back to gecko
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This is part 6 ~ part 9 patch in bug 1310885
gecko bug link:
https://bugzilla.mozilla.org/show_bug.cgi?id=1310885
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