Google Chrome's Javascript console keyboard shortcuts
F8 - Run
F10 - Step over
F11 - Step into
Works for me
To see the full list of shortcuts for the currently installed version:
in chrome open the Developer Tools Ctrl+Shift+I and then open shortcut help ?.
Edit: To get list of shortcuts, press Shift + ? when you are in other than 'console' tab, like 'Elements' or 'Resources'
In addition to Chris Tek's answer:
Shift + F11 - Step Out Of
Here is the full list of shortcuts for the latest version of Chrome Developer Tools:
http://code.google.com/chrome/devtools/docs/shortcuts.html