This process makes a ton of sense, once you start thinking of websites as online applications (and not just a bunch of page content, but even then sometimes it's worth thinking about page content as an application). It's also surprisingly simple, given the tooling that's already provided by the browser and the sw-precache and sw-toolbox libraries.

I only wish there were some roadmap to see this on the iOS side. I get that android has a lot of market share, especially in developing (slow 3g / 2g network) countries, so this is still a great idea (and totally worth the effort, given the payoff). But if there was some word from apple that this was feasible in the near future, I wouldn't be worrying about writing a native iOS app, or figuring out how to use cordova to deploy a hybrid webview app.

And that's why I somehow doubt apple is in a hurry to get this working on iOS. Watching the service worker presentations at the recent chrome summit, I couldn't help but think, "wow, app-like behaviors, straight from a webpage, pinned to the home screen".