More improvements to come. In particular, this still iterates through Shadow DOM
in each_xbl_cascade_data, but that should be changed later. That allows to
cleanup a bunch of stuff and finally fix Shadow DOM cascade order.
We still rely on the binding parent to be setup properly in the shadow tree, but
that requirement can go away later (we can walk the containing shadow chain
instead).
This mostly focuses on removing the XBL binding from the Shadow host.
It'd be nice to do EnumerateShadowRoots faster. I think that should also be a
followup, if needed.
Bug: 1425759
Reviewed-by: xidorn
MozReview-Commit-ID: Jf2iGvLC5de
We are relying in the XBL binding for the shadow host, we need to check
explicitly.
Also, we were checking in_shadow_tree, which is really broad. Just
is_html_slot_element should do, since the rest of the nodes should have only
light tree children.
Bug: 1425759
Reviewed-by: xidorn
MozReview-Commit-ID: KAFRVxaLsK
Browsing context names
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Dont make a network request when the media attribute of a link element is modified
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Add an IndexableText structure for text queries.
Instead of linear search for a node this now uses a HashMap.
Remove the now irrelevant fields from TextDisplayItem.
Include non-upstream metadata changes in WPT sync.
The original sync work excluded changes to metadata files under tests/wpt/mozilla under the assumption that any change in test results indicated an existing intermittent issue. This is incorrect, because these tests rely on shared infrastructure with upstream, so the results can be influenced by syncing.
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