Normally chrome keeps itself relatively up-to-date through automatic updates. There are cases, specially with rarely used chromebooks, where a manual update is necessary. This has been known to solve issues with M-step testing due to out-of-date chrome.
- After opening chrome click on the three dots in the upper right of the window. From there select Settings
- Click on the three lines in the upper left of the settings page and select About Chrome
- Click on CHECK FOR UPDATES
- After any updates have finished installing, a restart may be required. Your chrome build will now be up to date.