UserAgent: Mozilla/5.0 (X11; CrOS x86_64 10176.76.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.190 Safari/537.36
Platform: 10176.76.0 (Official Build) stable-channel celes

Steps to reproduce the problem:
1. I type in Chrome Download
2. I push download
3. It says that this type of file is not supported.

What is the expected behavior?
To download properly.

What went wrong?
It said that this type of file is not supported.

Did this work before? N/A 

Chrome version: 64.0.3282.190  Channel: n/a
OS Version: 10176.76.0
Flash Version: 29.0.0.113