Mobile DevTools: Remote Debugging for Android with Screencast
Until now, while remote debugging a mobile device, you had to shift your eyes back and forth between the device and your desktop machine. Now Screencast displays your device's screen right inside of Chrome DevTools on your desktop.
You can also interact with your mobile device from your desktop, as clicks on the screencast get translated into taps and touch events. Typing on the desktop keyboard also sends keystrokes to the device -- much better than typing with your thumbs!