With Chrome 58, Progressive Web Apps are more immersive with display: fullscreen. IndexedDB 2.0 is now supported and sandboxed iFrames get more options. Pete LePage has all the details and how you can use these new developer features in Chrome 58.
With Chrome 54, you can now create your own custom HTML tag with and make re-usable web components with Custom Elements v1; it’s easier to send messages between open windows or tabs on the same origin with the
BroadcastChannel API; media experience get better on Android and foreign fetch is now available as an origin trial.
Intro to the Full Screen API