Remove scope-visited.html

[emilio]

Test List

• https://wpt.fyi/results/css/css-cascade/scope-visited.html?label=master&label=experimental&aligned&view=interop&q=label%3Ainterop-2025-scope

Rationale

scope-visited.html fails on Firefox for reasons unrelated to @scope. Visited link coloring is asynchronous in Firefox (and intentionally not observable by the page so the page can't really wait for it). Our WPT harness also disables browser history so links never show as visited. The test works outside of the reftest harness.

We're considering hacking around it by making href="" synchronously turn the link visited, but that's a bit hackish and :visited is security-sensitive so I'd rather not rely on that.

[nt1m]

Seems fine, I propose removing scope-visited-cssom.html as well for coherency.

[emilio]

wfm

[nt1m]

@foolip can you find someone on Chromium's side to review this?

[foolip]

@andruud can you review?

[andruud]

How the privacy restrictions for :visited work is explicitly unspecified: https://drafts.csswg.org/selectors/#link

It used to be "generally accepted" (though not specified) that values though APIs must appear unvisited (scope-visited-cssom.html), but that was loosened recently by: https://drafts.csswg.org/selectors/#visited-privacy

So SGTM for both removals.

(In principle we should probably remove all 'visited' tests from WPT, and not just interop.)