How to upgrade Chrome in OS X
Simply opening the "About Chrome" interface is enough to trigger Chrome to check for updates and download them if there are any found.
Click the "Chrome" menu
This will reveal a menu with lots of options. One of them will be named "About Google Chrome".
Click "About Google Chrome"
You will be taken to the About page for Chrome.
Chrome will automatically check for updates
Chrome tells you "Updating Google Chrome..." while it checks for a newer version.
If Chrome finds updates, it will automatically download them - Click "Relaunch" to install them
Chrome tells you "Updating Google Chrome..." while it checks for a newer version of Chrome (and downloads it if one is found).
When Chrome relaunches, you should be running the latest version
Chrome now tells you "Google Chrome is up to date".
Congratulations, you have now ensured that your copy of Chrome is up to date.
In normal circumstances, Chrome will keep itself up to date automatically - if for some reason Chrome didn't update itself, please speak to your IT Support team for further help.