Review Mozilla 1882882: [meta] Profile Management MVP

🔍 Bugzilla Audit

Bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1882882

Description

Upstream is updating their profile management, and adding preferences. I don't know if this will be exposed in ESR 140 or not.

Technically, Tor Browser already has profile support via command line arguments, but it is not really exposed to most users. Would we want to allow for profile management within Tor Browser, and what could potentially go wrong?

Some things to consider off the top of my head:

1. How will this interact with addons (NoScript)?
2. Will dead/forgotten profiles linger on the user's system, with potentially private information they would rather was forgotten?
3. How will this interact with the default profile name we install? As far as I recall, we removed the hardcoding of the profile.default directory name, but we should double check this.
4. What would users end up using this for? E.g. you could have a "locked down" profile where all the security and privacy settings are at their strictest.

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