YouTube tests Facebook-style messaging feature and tinkers with classic 'loading' spinner

YouTube is looking to take on the likes of Facebook Messenger with a new in-app messaging function which lets users send videos to each other without leaving the platform's walls.
The service has been in testing since last year, but officially launched in Canada yesterday (18 January) and aims to make sharing videos more social but will also serve as a place for users to send ordinary text messages. 
Google product manager Ben Yair said the company hopes the the move will kee