On windows 7 you can do this: C:\Users\<user_name>\AppData\Local\Chromium\User Data . Save the default file. You can test it with ironportable if you want to know if it works. It's the way I do and I've got no problems at all. It's easy and fast. I don't know if an other way exist.
you can install http://www.xmarks.com/ , and maintain the same settings (also the passwords)on all your computers, on all your browsers (iron , safari, firefox, IE).
or
if you have a google account you can use the function synchronize to have the same settings for your all pc's , but only for iron / chrome browser