Earlier quoted context omitted.
Chrome and other Google softwares, by default will install a system-wide auto updater (Google Keystone[1]) set to run every 5 hours. The Keystone Agent cannot easily be removed, and will reinstall itself on every updates. There has also been an exploit[2] of this auto updater service. If what you need is Chrome developer's tools, installing Chromium (or building your own, for the paranoid) seems like a much better ch…
What happens if you chmod the plist for the launch agent to 000?
The issue is when we want to keep Chrome and maybe other Google apps installed, while _not_ have Keystone, and not letting any Google software reinstall Keystone. In that case, it involve uninstalling Keystone agent, creating GoogleSoftwareUpdate directory then chmod that directory to 000 both in ~/Library/Google and /Library/Google