Does Chrome use a custom-located/built-in Flash version?

When I visit http://www.adobe.com/software/flash/about using Google Chrome (Version 20.0.1132.47) on Mac the Flash version is reported as 11,3,300,257. However, if I visit the same page using Safari or Firefox then Flash version is reported as 11,2,202,235. So is Chrome using Flash installed in some other custom location?<p>Also, it's interesting that even if Chrome is using a custom Flash version, the system Flash installer still wants to stop/kill Chrome application to perform the update.