First it was Windows, now it is ChromeOS. This is about integrating a natural-language personal-assistant program in to a desktop operating system so you have the same kind of functionality that the mobile platforms are offering on your regular computer.
With ChromeOS, Google had integrated this functionality as part of the Google Search website once you enable it in the Chrome menu. It can be used in the New Tab page and in the Launcher (magnifying glass icon) in this operating system. Google also baked this functionality in to the latest iteration of the Chrome browser for other operating systems.
The question is whether these natural-language personal assistants will just earn their keep on smartphones or whether people will use them at the desktop and for which applications. Similarly, it will be interesting to know whether an operating-system vendor will use API hooks to extend the functionality of these assistants with other applications.