When you go to google to download Chrome, you don't get the full installer but a downloader of installer, a 700KB or so small file. It will then download the real installer, about 20-30MB. However, this way Google will install the google updater and other unwanted stuff.
The right way is to find the full install file that install Chrome only, no extra garbage. It'll put the installation into your personal folder and will not break things like AdBlock+ extension.
This is the link to the currently latest stable version of Chrome: Chrome 22.0.1229.96 Stable. It is google's cache server, i.e., safe.