Google's operating system for PC's

Google is planning to develop operating system for PC's, Google has made an operating system with the name Android for cell phones. Now they are planning the OS for PC's. This will be the clash between internet search king Google and software giant Microsoft. But the fact is when Google launched its browser Google Chrome, it was not able to fetch a major market share dominated by Microsoft's Internet Explorer. And on the other hand Microsoft's search engine "Bing" is also not able to give hard time to Google's search engine. As Google continues to dominate the search market with 78%. So if Google launches its OS, it will be a very healthy competition in my view, as the Google will try to come with a good OS and with the view of dominating the market. So lets see how the Google's OS will be like? :)