style: Implement a more fine-grained invalidation method.

This commit also removes the old restyle_hints module and splits it into
multiple modules under components/style/invalidation/element/.

The basic approach is to walk down the tree using compound selectors as needed,
in order to do as little selector-matching as possible.

Bug: 1368240
MozReview-Commit-ID: 2YO8fKFygZI
This commit is contained in:
Emilio Cobos Álvarez 2017-06-13 11:03:06 +02:00
parent fd10729941
commit cb06375fe2
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21 changed files with 1673 additions and 1486 deletions

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@ -4,5 +4,6 @@
//! Different bits of code related to invalidating style.
pub mod element;
pub mod media_queries;
pub mod stylesheets;