That is quite convenient, and should work even if you don't have the Maps app installed on your device.
Selecting it will allow you to view the map directly in the browser, without switching between apps. Google says that you can tap and hold on an address on a page, and Chrome will display an option that reads 'View in Google Maps with Chrome'. Either that, or you may have to copy the address and run a search. Normally, when you come across an address on a web page and tap on it, it will switch to the Google Maps app on your iPhone. ADVERTISEMENT Google Chrome for iOS adds support for Maps, Calendar and Lens Access Maps directly in Chrome