The newest feature to land in the latest builds of Chromium is an optional background check for software incompatibility. As more code moves directly into the realm of the browser, this makes sense.
This removes some fear in my mind of an endless succession of browser crashes due to plugin incompatibility. While Google has taken steps to avoid this by baking in Flash and a PDF reader, there are going to be plugins required for certain applications that may not play well with others.
Any other examples of plugins I may have missed?