Deploy PPAPI plugins out of Chrome Web Store

Is it possible to deploy a PPAPI Chrome plugin without publishing on Chrome Web Store, say, provide an installer to end users?

Solution

You can use PNaCl without publishing on the Chrome Web Store. PNaCl can load from your web site(s).

But no, Chrome doesn't support you having an installer for a PPAPI plugin that was not built with the NaCl or PNaCl toolchain.