Possible Duplicate:
Where can I see which chrome extensions API is valid for which chrome version
Is the any developer documentation available for previous releases of the Google Chrome\Chromium? I need to make my extension to be backward compatible down to the Chromium 17 release, but I have no idea how to do this without documentation.
I'm looking for something like this, but for previous releases: http://developer.chrome.com/extensions/docs.html#versions