The Tweet says it's still there, just slightly more buried than it used to be. Which is a shame since it's one of the most useful features in Chrome and not a lot of people know about it.

Still way less confusing than Firefox's UI for this though. What I like most about Chrome's implementation is how by default the search engine is linked to the main site, so I can type "yo<enter>" to visit the YouTube homepage or "yo<tab>" to search YouTube. And there's no need to manually set anything up (except to click the "activate" button now next to each site you want to the feature on, unfortunately).