focusgroup shipped in Chromium 150

[captainbrosset]

The focusgroup feature (source, dist) shows no support at all, even though focusgroup shipped with Chrome/Edge 150 (release notes)

Looks like we just don't have BCD keys in the feature yet:

web-features/features/focusgroup.yml

Lines 7 to 14 in 21d9b8e

	# Expected:
	# compat_features:
	# - api.HTMLElement.focusgroup
	# - api.HTMLElement.focusgroupStart
	# - api.SVGElement.focusgroup
	# - api.SVGElement.focusgroupStart
	# - html.global_attributes.focusgroup
	# - html.global_attributes.focusgroupstart

BCD doesn't seem to have those keys yet.

[ddbeck]

None of this is being picked up in BCD because there's no built specification for it; WHATWG PRs spending forever in review seems to be a recurring problem for getting timely data. ☹️ It'd be nice if there was some preview specification build that could get slurped up by the spec tools (e.g., like is done for WICG drafts or TC39 proposals). Alas!

I've filed mdn/browser-compat-data#30468 to add the data, but I'm not sure how to get the collector to start testing for this in the absence of a spec.

[captainbrosset]

@Elchi3, in other thread, mentioned whatwg/html#11723 and wanting to do some investigation to try and add the feature manually.
He also mentioned @tidoust's great comment about creating specs earlier which, even if about a different feature, applies here too: WICG/install-element#31 (comment)