If you want to stay on the bleeding edge of Chromium for OS X's development, the following shell script automatically downloads the latest build of Chromium for Mac. Open Terminal and create a new file with vi, emacs, nano, etc. Paste in the following code:
Save this script somewhere, make it executable (chmod a+x /path/to/script.sh), and schedule it with cron.on run {input, parameters}
tell application "System Events"
if exists (some process whose name contains "Chromium") then
tell application "Chromium" to quit
end if
end tell
end run
I prettied it up a bit with a dialog to let me know when it was done, and it works well. Updates are now a click away, and I don't have to remember to quit Chromium first.]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20090604081030791