In Whonix, for better anonymity it is recommended to use only Tor Browser for browsing the internet. Use of any browsers such as Chromium, Firefox, Opera and others is discouraged. Reasons for that are elaborated on the Tor Browser wiki page.
The reason why browsers other than Tor Browser are discouraged is because hiding your identity is harder than just hiding your IP. This is elaborated on the Tor Browser wiki page.
Documentation for this is incomplete. Contributions are happily considered! See this for potential alternatives.
Since Whonix is based on Kicksecure™, the user can follow these instructions Chrome (links to the Kicksecure™ website)
- Dev/Kicksecure Default Browser
- Chromium Browser for Kicksecure™ Discussions (not Whonix)
- Google Chrome Repository Insecurity