"but Google did not provided any other details."
Aaah... The grammatical errors :D

Chrome is actually a surprisingly decent browser. Visually it leads the pack (Firefox is pretty ugly), though it's missing some basic features (like the ability to disable your web history and extension support). With StrokeIt (for mouse gesture) and AdSweep (for adblocking) it actually stands up to Firefox and is dramatically faster at loading.

It's a while before it will be suitable for the mainstream but once they get privacy sorted (more than just the Incognito mode, which is brilliant but not suitable for regular browsing) and add extension support it should take off. It's about time, as Firefox is everything that they criticised IE for - slow at adding new features, insecure, poor at standards support (Acid3 being one indicator), etc.

Sounds to me like Google is doing a good job. I use Chrome on my XP rig.