Unable to reproduce the issue on the reported chrome version 61.0.3163.100 and on the latest stable 62.0.3202.89 using Mac 10.12.6 with the below mentioned steps.
1. opened chrome
2. Checked do not allow notifications in chrome
3. Blocked facebook from receiving notifications.

Attaching the screen cast of the same.

@Reporter: Could you please mention whether we have missed any steps in reproducing the issue.

Thanks! 

Deleted: Nov-8-2017-7-38-PM.mp4 1.6 MB

	Nov-8-2017-7-38-PM.mp4 1.6 MB View Download

Hi just an update I got to the point where I decided I could take it no more, so I fully uninstalled chrome and deleted all files inside of /Users/{my-username}/Library/Application Support/Google/Chrome

When I re=installed chrome I AM STILL getting the facebook messanger notifications... this is beyond insane... I'm not even logged into facebook???? I'm at the point where I'm either going to uninstall chrome completly or have to find a way to block all incoming requests from whereever notifications are sent.

This is beyond annoying.

I have added the :443 to my facebook URL to see if this disables the onslaught of notifications. I will get back to you.

Thank you for providing more feedback. Adding requester "vamshi.kommuri@techmahindra.com" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Ok, still getting notifications :(

To be clear, if you are receiving notifications *after* uninstalling Chrome then it's highly unlikely to be Chrome that's sending them to you in the first place.

Do you have multiple channels installed (e.g. Stable and Canary)? Are there other apps or browsers on your system that could be sending these notifications to you?

I have Safari and Firefox installed, only the stable chrome.

Perhaps it is safari as for a while I was using it as a primary browser. I will investigate 

Looks like facebook might have setup notifications via macos's system and not chrome. Sorry I had no idea this was even a thing (just moved to macOS)

Will report back before 7 days if they continue, if not I will try to remember to close, otherwise feel free to close on my behalf.

[mac bug triage]

Setting a NextAction date so we're reminded to follow up on this in a week - please let us know if the notifications are coming from Chrome or not. Thanks!

I've see the kinds of notifications you're talking about and ended up turning them off myself :). Closing this issue, but definitely post an update if it turns out to be related to Chrome.

yeah it was macos notifications not chrome

The NextAction date has arrived: 2017-12-06

All right. Thanks!