A views::View can have a tooltip [1]. We should show this for views (only for Views that do have tooltips) as a property. I think it will need to a readonly attribute though, because it doesn't look like we have an easy way to set the tooltip on a View.
[1] https://cs.chromium.org/chromium/src/ui/views/view.h?l=881
Comment 1 by tdander...@chromium.org
, Jul 17 2017