Recent update shows extensions removed message

Description

Post upgrade to 0.68.131, got a message saying 3 out of 5 extensions installed are removed. However, they were still active and worked just fine.

All the extensions were installed by visiting the developer homepage and navigating to the Chrome Store from their home page.

Extensions Installed:

1. Dark Reader
2. Zenhub
3. 1Password X
4. Grammarly
5. Evernote

The error message only mentioned 3 extensions(1Password X/Grammarly/Evernote).

As a test I created a local unpacked extension and installed 1Password X on 0.67.123 and then upgraded to 0.68.131 via sudo apt update && sudo apt-get install --only-upgrade brave-browser and there was no warning shown about extensions being removed.

Expected result:

No warning message when extensions are installed via webstore

Reproduces how often:

When you are the chosen one.

Brave version (brave://version info)

Brave	0.68.131 Chromium: 76.0.3809.100 (Official Build) (64-bit)
Revision	ed9d447d30203dc5069e540f05079e493fc1c132-refs/branch-heads/3809@{#990}
OS	Linux

Version/Channel Information:

• Can you reproduce this issue with the current release? Yes
• Can you reproduce this issue with the beta channel? Maybe
• Can you reproduce this issue with the dev channel? Maybe
• Can you reproduce this issue with the nightly channel? Maybe

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? N/A
• Does the issue resolve itself when disabling Brave Rewards? N/A
• Is the issue reproducible on the latest version of Chrome? N/A

Miscellaneous Information:

Probably similar to #5761 cc: @bbondy

[srirambv]

This happens on Fedora at least. Reason: Fedora adds a UA extension when you install which isn’t from Extension store. Happens on clean install

[srirambv]

This seems to be fixed on Fedora at least. Closing the issue for now, can reopen/add a new one if this happens again.