Google wouldn't need to acquire the project if they wanted a desktop app. It's just a client ... nothing Google engineers couldn't handle.
But this person might land a job at Google, like the Sparrow folks... http://sparrowmailapp.com/
That's not an insult, it's supremely awesome that this is even possible and that this dev made it happen. I'm using it now. But there are a few of these types of things for Google Music, there's a similar Chromebook app.