Verified. I followed the steps in the test case by installing chromium-browser in a clean eoan VM and verified that after patching get_browser_gnome3() in /usr/bin/xdg-settings I got the error message in the console. I then enabled eoan-proposed, installed the chromium-browser update (79.0.3945.79-0ubuntu0.19.10.2), and after that the error is gone when running chromium-browser.
Verified. I followed the steps in the test case by installing chromium-browser in a clean eoan VM and verified that after patching get_browser_ gnome3( ) in /usr/bin/ xdg-settings I got the error message in the console. I then enabled eoan-proposed, installed the chromium-browser update (79.0.3945. 79-0ubuntu0. 19.10.2) , and after that the error is gone when running chromium-browser.