iPhone auto added email addresses to a computer??

Just got a pop up saying something along the lines of "gmail address has been added to 'MacBook pro'" with the only option to click ok to go back to using the phone.

The message appeared right when I unlocked to access my phones home screen without any other known action.

I also don't have a computer with the name 'MacBook pro'. I named my older MacBook Pro something else.

I've never seen this - Anyone have any idea what this message could mean? Has someone hacked my phone or is there a setting I'm missing?