[Acc] Keyboard accessible tooltips- Fixes #132344

[r3m0t]

Enables the Blink feature keyboard accessible tooltips

Ensures some elements with tabindex=-1 have the title attribute (breadcrumbs and the editor title toolbar), allowing keyboard accessible tooltips

Fixes #132344

I navigate with the keyboard and see tooltips in the breadcrumb and the editor title (Split Editor Right) and the layout toggles (Toggle Panel)

However, when using the mouse, some things have double tooltips like the layout toggles.

[meganrogge]

Thank you so much for looking into this. I am still not seeing it work - what am I doing wrong here?

Edit: I see you said you've tested this on Windows. I'm seeing different behavior probably because I'm using mac.

Screen.Recording.2023-11-10.at.2.14.16.PM.mov

[r3m0t]

Well that definitely explains it! Not surprising the Edge team never tested the feature on a Mac. I tried to use a web based gif capture tool but it wasn't able to capture the tooltips.

[meganrogge]

This works well on windows for some of the buttons @r3m0t . Thanks for working on it. Is it ready for review or still a wip?

[meganrogge]

I think we should merge this since it fixes some cases.

[deepak1556]

I think this should be behind a runtime flag mainly because the changes are incomplete in upstream, refs comment https://bugs.chromium.org/p/chromium/issues/detail?id=829352#c45 . @meganrogge it would be good to know what work is remaining to enable it by default from the edge team.

[meganrogge]

@deepak1556 do we have an edge contact?

[meganrogge]

I imagine putting it behind a runtime flag will mean almost no users see the change. Should we instead wait until it's fixed upstream?

[deepak1556]

LGTM on enabling the runtime feature flag.