Sam Atkins 3bd14941c7 LibWeb: Switch to new CSS Parser :^) ...

Change all the places that were including the deprecated parser, to
include the new one instead, and then delete the old parser code.

`ParentNode::query_selector[_all]()` now treat their input as a
comma-separated list of selectors, instead of just one, and return
elements that match any of the selectors in that list. This is according
to these specs:

- querySelector/querySelectorAll:
https://dom.spec.whatwg.org/#ref-for-dom-parentnode-queryselector%E2%91%A0
- selector matching algorithm:
https://www.w3.org/TR/selectors-4/#match-against-tree

2021-08-02 19:01:25 +04:30

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