Bug 1810047 - Implement UI for webextensions optional permissions.

[willdurand]

Pull Request checklist

• Quality: This PR builds and passes detekt/ktlint checks (A pre-push hook is recommended)
• Tests: This PR includes thorough tests or an explanation of why it does not

After merge

• Breaking Changes: If this is a breaking Android Components change, please push a draft PR on Reference Browser to address the breaking issues.

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GitHub Automation

https://bugzilla.mozilla.org/show_bug.cgi?id=1810047

[willdurand]

[Amejia481]

LGTM!

As chatted via Slack, we will further investigate if we should auto grant directly on gecko/geckoview. At the moment, we are duplicating this functionality in Desktop and Fenix, eventually we will get Gecko on iOS. This seams to be a core functionality that shouldn't left to handle to consumers.

[pmarks-net]

Thanks for fixing my extension, but be aware that the permissions granted via this dialog are not visible (and thus cannot be revoked) from the extension's Permissions UI.

[willdurand]

and thus cannot be revoked

the extension can revoke them

[willdurand]

@pmarks-net sorry for the quick reply the other day, to expand on that: yes, you're right. We don't have UI for optional permissions in the Fenix details view. There is a bug for that, see: https://bugzilla.mozilla.org/show_bug.cgi?id=1811563. We'll get that fixed eventually but I don't have an ETA yet. In the meantime, extensions can offer optional permission removal using permissions.remove().