I know nothing of the system you cite, but you mention Linux. There is no Linux-native version of the Shockwave Player plugin. Some users report success using the Wine emulator - ymmv
Chrome OS uses a Linux kernel. In fact it uses sources from Ubuntu. Since it is a Linux derivative, it will not support Shockwave. The only hope is if Google pressures to release a version. Google is going in the direction of HTML5 and has already implemented it on the Chrome Browser. With HTML5, plugins like this are likely to go away unless they are used by the gaming community.