I doubt it, but I wish they did. I think the Chrome/Chromium model is perfect for a corporation wanting to use open source and give back, while in the same time keeping full control of their software.
I wish Android worked like Chrome and Chromium. There should've been a version (Chromium-like) that manufacturers could use and do anything they wanted with it, and a version (Chrome-like) that could only be modified by Google alone, and be the only version Google actually promotes. They're sort of doing it with the "Google experience" Nexus devices, but that seems more like an afterthought more than something that was thought up from the beginning and as main strategy.
I wish Android worked like Chrome and Chromium. There should've been a version (Chromium-like) that manufacturers could use and do anything they wanted with it, and a version (Chrome-like) that could only be modified by Google alone, and be the only version Google actually promotes. They're sort of doing it with the "Google experience" Nexus devices, but that seems more like an afterthought more than something that was thought up from the beginning and as main strategy.