Example URL:
chrome://dino

Steps to reproduce the problem:
1. Navigate to chrome://dino
2. Tap More 

What is the expected behavior?
The option 'Add to Home screen' should be available.

What went wrong?
'Add to Home screen' is not available. 

Does it occur on multiple sites: No

Is it a problem with a plugin? No 

Did this work before? No 

Does this work in other browsers? Yes

Chrome version: 57.0.2954.0  Channel: canary
OS Version: 6.0.1
Flash Version: 

It would be really cool if 'Add to Home screen' worked and we could put a dino app on the home screen.