UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Steps to reproduce the problem:
A website such as YouTube, notifications never time out

What is the expected behavior?
There should be an option in the browser to override the maximum notification time.

What went wrong?
Notifications will never time out, resulting in an unpleasant experience when using a fullscreen app, as many of them (games through WINE particularly) do not allow you to close the notifications, although they are displayed on screen, and never leave.

The only way to close the notifications for WINE games is to close the game entirely (as alt-tabbing leads to being unable to resume them), and then close the notifications, then open the application again.

This is made even worse by push notifications, which require you to not only close the tab, but the browser entirely, to be able to play any game sanely.

To be clear, I'm well aware that the fullscreen bugs mentioned above are WINE's fault, and not Chromium's. The reason I mentioned it is to give a case of why all notifications should be able to have a maximum timeout.

Did this work before? N/A 

Chrome version: 68.0.3440.106  Channel: stable
OS Version: 
Flash Version: 

I'm sorry if this is not the right place to share this. I saw this post: https://productforums.google.com/forum/#!msg/chrome/ORfa-VQDymI/-8r2VvikDQAJ , which suggested to post it here. After searching through the bug database, I wasn't able to find anything regarding this, so I made a new issue.

Another possible solution could simply be to impose a maximum time limit by default. I personally see no reason for allowing websites to create notifications that linger for an unlimited amount of time, without the user being able to control it (other than disable the otherwise useful notifications entirely).