As Chrome developer relations engineer Boris Smus shows us, the Chrome browser features remote debugging for editing mobile sites on the fly.
After some initial setup involving the Android SDK, devs can see a live view of a mobile site on their Android handset as they edit code on their desktop PC. The result is instant feedback. CSS and other code changes take place in real time, showing the results of any action exactly how they will appear on a mobile device.
For More details to the Google Code link.