They might not be built-in, but the two things that sent me back to Firefox after using Chrome for ten minutes were: - Chrome has no "Allow web pages to choose

They might not be built-in, but the two things that sent me back to Firefox after using Chrome for ten minutes were: - Chrome has no "Allow web pages to choose their own fonts" checkbox that I can uncheck. The web is a hideous typographic cacophony without this option. - Chrome doesn't have the TreeStyleTabs extension. Chrome's default tab-handling is better than Firefox's default tab-handling, but TreeStyleTabs is just better. Since I last tried using Chrome, Firefox 4 nightlies gained the new Tab Panorama feature, which is possibly even better than TreeStyleTabs unless you have a lot of tabs in your working set.