Google Chrome app file in Mac is 22GB large
Solution 1:
Policy is to keep the last 2 versions; which it ought to do itself, but sometimes messes up. I'd delete all but the last 2 then keep an eye on it for a while & see if it stays that way.
This is my current folder contents -
For future Googlers, to access the contents of the Google Chrome app, right click it & select 'Show Package Contents'.
See Safe to delete Google's Update folder? for the Windows equivalent.