Bug 40020: Add FF91 audit

============ General =============

The audit begins at the commit hash where the previous audit ended. Use

code_audit.sh for creating the diff and highlighting potentially problematic

code. The audit is scoped to a specific language (currently C/C++, Rust,

Java/Kotlin, and Javascript).

The output includes the entire patch where the new problematic code was

introduced. Search for "XXX MATCH XXX" to find the next potential violation.

code_audit.sh contains the list of known problematic APIs. New usage of these

functions are documented and analyzed in this audit.

============ Firefox General Portion =============

Start: bf8b9c6630fca1b774dbf1573bf14c9315349514 # FIREFOX_90_0_BUILD1

End:   e0fdc6e4749b33693b75b92309ba2a982a9bdfa9 # FIREFOX_91_0_BUILD2

# Nothing of interest (using `code_audit.sh`)

============ Application Services Portion =============

Start: dd09c25f14dbf45f1637ed8dca2d1e5ff668479f # v77.0.2

End:   89ea9cfa6eaa0763d17ec9aa04098839d028004c # v79.0.0

Nothin new.

============ Android Components Portion =============

Start: 0ab0465c5ca99b9b01a32e4562905fe51a709204 # v90.0.12

End:   1d401758fb29294099f9f155f3db4e15e9a712ec # v91.0.12

# Issue #10386

#  - Add AutofillUseCases for common Android Autofill tasks.

#  - Review Result: Safe

============ Fenix Portion =============

Start: aeedb6b53781c6d29fda9034267a4ce8aeed6468 # v90.1.1

End:   bdf9c3ec4b7cbcf8afc717e9f56b6b03786aa455 # v91.1.0

Nothing new.

============ Regression/Prior Vuln Review =========

Review proxy bypass bugs; check for new vectors to look for:

 - https://gitlab.torproject.org/groups/tpo/applications/-/issues?scope=all&utf8=%E2%9C%93&state=opened&label_name[]=Proxy%20Bypass

   - Look for new features like these. Especially external app launch vectors