Chrome for android is rolling out with an update, the app is now updated to version 52. With this update you people will be able to load videos faster without consuming much battery. According to Google, over a billion hours of video is played on Chrome every week, and the most of the traffic is from mobile devices, this might be the reason for this update to make user experience even more smoother.
And yea don't worry this will not consume your data there's also a data saver mode which you can enable while watching videos. From the Chrome blog:
" With the release of Chrome 52 on Android, video playback has been improved for speed and power efficiency. This means you will see smoother playback and faster load times. Videos will now start playing sooner, instead of pausing briefly before loading, and your battery will last longer."
The update is currently live in India!