That only applicable for Standalone or Enterprise (MSI) Installers....
.....most users will install using web-based installer (that <1MB one), which put the Chrome application directory in .\Documents & Settings\<username>\ (XP) or .\AppData\<username> (Vista & above). This will make sure non-Administrator accounts could install Chrome without the need for privilege escalation (even Guest account can do it!). The downside is there will be a separate copy of Chrome application folder for each user (that installed/use Chrome) on that system . Try for it yourself.
Regards.