blanket turn off push notifications in Google Chrome?

Per this:

1. In Google Chrome, click on that button that looks like three dots in a vertical line at the upper right.
2. Scroll down to: "Advanced"
3. Expand: "Advanced"
4. In the "Privacy and security" subsection click on "Content settings" line item
5. Click on: "Notifications"
6. Turn off "Ask before sending (recommended)" so that setting just says: "Blocked"

 
 

Addendum 2/22/2018: Step one and a half above should read: Go to "Settings"