Now that we have Android apps on Chrome OS, it is time to tweak things around to make Chrome OS more Android friendly. Google is working on that. The newest change that are makes Android app files available on the Files app.
Android Files on Chromebook
As of now, this feature is available only behind a flag. If you do not see this flag yet on your Chromebook, do not worry. Check back in a few more weeks and you should see this feature enabled for you as well!
So, here is the flag that you need to look for. Open the following page:
This is the flag description:
Show Android files in Files app if Android is enabled on the device. – Chrome OS
Enable this flag and restart your Chromebook. Now, open the Files app and you should see a new section called Android Files on the sidebar. Like so:
You will see all your Android app files here, just like you would see them on a file manager app on your Android phone or tablet. Enjoy!
Via François Beaufort.