Chrome App Builder is a utility that allows you to easily create Chrome Packaged Apps without needing to type any code. With the Chrome App Builder, you simply define a few settings such as navigation controls and a home button, type in the app URL and finally choose whether you want it to be enabled for use in Kiosk Mode. Once the app is exported, you can test it out locally or upload it to the Chrome Webstore.
Help center article at: https://support.google.com/chrome/a/answer/6137027?ref_topic=6128720
More info at http://www.youtube.com/watch?v=O51590wAszE
Update notes:
1.0.1: App with no navigation bar now hides navigation bar completely.
1.0.2: Navigation
fix
1.0.3: Action button fix