UserAgent: Mozilla/5.0 (X11; CrOS x86_64 8172.56.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36
Platform: 8172.56.0 (Official Build) stable-channel samus

Steps to reproduce the problem:
Back and Forward, two common navigation shortcuts in Chrome don't apply in the File Manager.

What is the expected behavior?

What went wrong?
True, Backspace works to navigate up a level, but these keyboard shortcuts seem to be left out:

- Alt+left and Alt+right for forward/back history navigation
- "Back" and "Forward" dedicated function keys for forward/back history navigation
- Shift+Backspace to go forward

Maybe it has to do with how Back/Forward history at large isn't implemented in the File manager. Nor is editing the current path, collapsing the sidebar, or a 30-day emptying Trash, or Ctrl+clicking the File Manager icon to open another window... sorry for polluting this issue with so many side features. Feel free to disregard those.

Did this work before? N/A 

Chrome version: 51.0.2704.103  Channel: stable
OS Version: 8172.56.0
Flash Version: Shockwave Flash 22.0 r0