I have the feeling that every "good" message about Chrome is followed by a disastrous one. This time it was the funky "audio feature" on tabs, followed by this. Chrome developed a scary creativity with good and evil stuff. I used Chrome once because everybody was telling me how fast it is. It wasn't. People just couldn't add all the processes properly. Since then it was a roller coaster I won't jump on anymore. I use…
My guess would be the tooltip-like thing that Google puts on its search page telling them to "make the web better with Chrome." I've never clicked on the thing, but it probably changes your default browser and installs a bunch of shortcuts.