See update 07/2012: Google Chrome accessibility update
The same example page viewed using the Google Chrome Frame plug-in:
No content is available to assistive technologies via the MSAA accessibility API. Effectively the whole page becomes invisible to users of AT.
Why would a user of AT install Google Chrome Frame?
Like other people it is presumed users of AT want the opportunity to take advantage of the latest technologies and powerful new features Google Chrome provides, and may want to install the plug-in if they are prompted to do so to access site content.
What does the lack of support for AT in Google Chrome Frame mean?
Google Chrome 2.0 Accessibility Improvements?