Google Chrome OS is scheduled to be launched as a platform for notebooks in the first half of 2011. But already, there are many people who doubt the operating system’s future.

Paul Buchheit, the founder and main developer behind Google’s email service Gmail, does not leave the operating system from Google much hope. In his opinion, it is not even worth taking seriously. In a Twitter message he predicts that Chrome OS will be killed next year.

And this is coming from the same guy that, besides developing Gmail, also developed the prototype of the ad network AdSense for Google. He is also the man who suggested Google’s famous slogan “Don’t be evil”, during a meeting back in 2000.

In 2007, Buchheit founded FriendFeed, which was acquired by Facebook in August 2009. In 2010, Buchheit left Facebook to become a partner at the venture capital firm Y Combinator.

“ChromeOS has no purpose that isn’t better served by Android (perhaps with a few mods to support a non-touch display).”, Buchheit writes in a discussion thread on FriendFeed.

He continues, “Yeah, I was thinking, “is this too obvious to even state?”, but then I see people taking ChromeOS seriously, and Google is even shipping devices for some reason.”

Several critics have questioned Google’s decision to develop two different operating systems, since they seem to overlap each other in many areas. Both Chrome OS and Android OS is based on Linux and Webkit code, and they are developed for mobile devices that require more or less continuous Internet access.

Will they both survive?

Not even Google co-founder, Sergey Brin, could answer that last year, when he said that “Android and Chrome will likely converge over time”.