Chrome history and favorites in Spotlight?
To my knowledge, thus far the only browser tied into Spotlight like that is Safari, which is one its major selling points (and the main reason I won't use FF, or now Chrome, as my primary browser.)

The beauty of the Safari/Spotlight connection goes beyond bookmarks, however. Spotlight actually creates an index of all the text on each page you visit. I set my Safari to never delete and now I find myself creating far less bookmarks. If, for instance, two years from now I remember reading a page about best places to stay in Tulum, I can just search my Safari index from Spotlight and pull up that page. I don't need to have ever bookmarked it and I don't need to start over with the web.

It's a little known, but very clever, innovation that Apple provides with Safari and Spotlight.