The Google Chrome installer for Windows installs the browser only for the current user. This is to ensures that the user can install Chrome without having administrator rights on the machine. That is some sensible thinking from Google, but what if the administrator wants to install the browser for all users on a machine?
Until now, users who wanted to install Google Chrome for all the users of a computer had to use the Chrome build from the Google Pack. The Google Pack is a collection of free software from both Google and third party publishers like Mozilla and Adobe.
Recently, Google added a more straightforward location to download the installer that does system-level Chrome install. This is an MSI installer that currently installs the latest Dev Channel build and seems to be targeted toward enterprise users. The MSI installer can be downloaded from here: http://www.google.com/chrome/eula.html?msi=true
The GoogleOS blog discovered a Google engineer explaining this in the Chromium project page:
"The current user-level installation experience doesn't require elevation (installing at system-level does), and most users don't know or care about system-level installs. That said, it would probably be a good idea to have some links on the download pages that say 'click here for a system-level install or MSI', so interested/advanced users could find it easily as part of the normal download install flow," explained Glenn Wilson, a Google Chrome engineer.