Chromium said they'd do that if someone tested which Nouveau versions work fine and provided a test suite to use. Ilia Mirkin (in the link) said he tried to run

Chromium said they'd do that if someone tested which Nouveau versions work fine and provided a test suite to use. Ilia Mirkin (in the link) said he tried to run their test suite but got errors on the latest Nouveau (possibly due to a browser issue). So as it stands now Chromium doesn't know which if any versions of Nouveau are stable.