Except this doesn't actually "prevent surprises in a shared device scenario" for the web, in general; it does for Google sites and services only. Logging in to Facebook or Amazon or my personal blog does not show up as a browser indicator, nor does logging out of the browser also log one out of Facebook or Amazon or my personal blog.
This makes Chrome less of a browser and more of gateway to Google services that happens to include a browser. Which will also trick non-technically-savvy people to accidentaly share their non-Google logins when sharing computers/"browsers".
This makes Chrome less of a browser and more of gateway to Google services that happens to include a browser. Which will also trick non-technically-savvy people to accidentaly share their non-Google logins when sharing computers/"browsers".