browser/extensions/newtab/content-src/components/TopSitesHoverCard/CardAd

Name	Description	Size	Coverage
CardAd.jsx	Sponsored-tile variant of the top-sites hover card. A placeholder today: it renders nothing, but its presence in the content registry routes sponsored tiles here (ad-wins precedence) so notifications never appear on an ad tile. A real sponsored hover card can grow in here without touching the shell. @returns {null}	606	-