We have FYI bots that run catapult and perf unittests on TOT chromeos with TOT chrome:
https://uberchromegw.corp.google.com/i/chromiumos.chromium/builders/x86-generic-telemetry
https://uberchromegw.corp.google.com/i/chromiumos.chromium/builders/amd64-generic-telemetry

These take almost 3 hours for a successful run.

chromeos build takes an hour, and the tests run for an hour or so. We should investigate eliminating some of the steps.

We should use the artifacts from the simple chrome builders, which use a prebuilt chromeos and build chrome, instead of building from scratch. Get rid of the Unittest step, and eliminate retries in the VMTest stage.