UserAgent: Mozilla/5.0 (X11; CrOS x86_64 9765.13.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.20 Safari/537.36
Platform: 9765.13.0 (Official Build) dev-channel edgar

Steps to reproduce the problem:
1. Set brightness to any value
2. Reboot
3. Check brightness is not the same as previously set

What is the expected behavior?

What went wrong?
Brightness setting does not persist after a reboot

Did this work before? N/A 

Chrome version: 61.0.3163.20  Channel: dev
OS Version: 9765.13.0
Flash Version: