Real use case for this is so Google can poke into context for links shared via services they have no ownership. They got used to know exactly what people share and, much more importantly, what people click on email, thanks to gmail rewriting all links to a google track url (while misleading the user by a fake status text on mouse over). When they sum the info of 1. who send it, 2. who clicked on it, 3. what was the e…
I understand the skepticism about Google's motivations but "making Chrome better and more feature rich so people will want to use it" is completely in line with Google's business plans.