UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.98 Safari/537.36

Steps to reproduce the problem:
chrome://settings/languages can make e.g.,  Google Maps appear in
successfully appear in the user's preferred language.

This is good.

However if the user instead of directly trying it,
first clicks "Learn more",
https://support.google.com/chrome/topic/1678461
he will give up, as there only translation operations are mentioned.
No where is it mentioned that this setting actually affects
the critical "Accept-Language: " HTTP header sent.
You don't need to mention it by name if you don't want. But at least
mention its action.

The user might then also fruitlessly look at
https://support.google.com/chrome/answer/114662
found in the sidebar.

What is the expected behavior?

What went wrong?
It appears to the user there is no way to change what language the browser requests pages in.

Did this work before? N/A 

Chrome version: 57.0.2987.98  Channel: n/a
OS Version: 
Flash Version: