First stages of Chrome OS integration appear in Google Chrome
Common sense dictates that Google's browser would be tightly integrated into the new operating system, but now we have some actual code which provides confirmation. As you can see in the screenshot, the Chromium switches file now contains a reference to Chrome OS's login manager. The single-sign-on cookie provides simplified access to the various Google services like GMail, Calendar, Reader, and Docs.
One other interesting addition to the file is SyncServiceURL, which allows users to override the default save location for Chrome's synced bookmarks. This could open the door for syncing to a private server -- or at least to a folder you specify in your Google Docs storage.