The Canary build of Chrome has had support for multiple user profiles for a while and they are now rolling it to the Beta channel before it’s ready for prime time. It’s a handy feature when sharing Chrome via a single operating system account on your computer with family members or friends.
Simply create users in Chrome so everyone can switch to their profile from the wrench menu and personalize Chrome to their liking without messing with others’ browsing environment. Individual users can even set up Chrome Sync in their Chrome user account to keep their settings in sync with all Chrome installations.
According to the official blog post:
To try it out, go to Options (Preferences on Mac), click Personal Stuff, and click “Add new user.” A fresh instance of Chrome will open, ready to be customized with its own set of apps, bookmarks, extensions, and other settings. A badge in the upper corner lets you know at a glance that this new Chrome browser belongs to you, and you can customize the name and badge as you like. Clicking this badge drops down a menu of all the users on that computer, so you can easily switch between them. In addition, each user can sign in to Chrome to access their own personalized Chrome across all their computers.