Update Unsafe Browser tweaks for Tor Browser 9

config/chroot_local-includes/usr/local/lib/tails-shell-library/chroot-browser.sh needs updating; for example:

• search extensions are managed differently now: #17039 (closed)
• the security slider is displayed
• the custom browser name is not applied (window name contains “Tor Browser”)
• the custom theme (grep /usr/share/pixmaps/red_dot.png) is not applied
• probably more, so look at every other customization we attempt and ensure it’s applied as intended:
  • in English
  • in another language

Feature Branch: feature/16356-tor-browser-9.0+force-all-tests

Attachments

• addonStartup.json.lz4

Parent Task: #16356 (closed)

Subtasks

• #16357 (closed)
• #17039 (closed)

Related issues

• Related to #17142 (closed)
• Blocks #16209

Original created by @intrigeri on 17055 (Redmine)