From the Google Apps Blog

“Admins now have the ability to customize 100+ Chrome policies for users right from the Google Admin panel. That means employees will be able to access pre-loaded applications, custom themes, or a private app web store from any computer — whether it’s the company desktop or personal laptop — when they sign-in to Chrome with their Google Apps account.

Editions included:
Google Apps for Business and Education

For more information:

The Chrome management in the domain console now affects the desktop browsers as well as the Chromebooks. If a user setups Chrome Sync on their desktop browser, with an account managed by the school/district domain, any of the Chrome settings, ie: Blacklists, start pages, etc, will also apply to the desktop browser.

If you do not want this feature, under Users, choose Services for the organization, and turn off Google Chrome Management. This will not affect the management of Chromebooks, only the desktop browsers.

Thanks to Jim Black for sharing this information.