For example, I want to download version 22.0.1229.2

Old URL, no longer works
http://dl.google.com/chrome/install/1229.2/chrome_installer.exe

New URL:
http://cache.pack.google.com/edgedl/chrome/win/22.0.1229.2_chrome_installer.exe

Fuck Google's bootstrappers downloader which is slow like shit. And the official standalone installer failed to install on Windows XP. WTF.

btw to check the newest Chrome version, use this page http://feeds.feedburner.com/GoogleChromeReleases

2012-11-29 Update: New URL for dev version:

https://dl.google.com/tag/s/ap%3D2.0-dev/update2/installers/ChromeStandaloneSetup.exe

http://storage.googleapis.com/chrome-canary/25.0.1337.0_chrome_installer.exe

2013-01-24 Update:

https://dl.google.com/edgedl/chrome/install/GoogleChromeStandaloneEnterprise.msi