I can’t believe that neither a Google or SO search has turned up a definitive answer or even much discussion for this, but:
I’m used to Eclipse’s F5/F6/F7/F8 debugger step into/over/out of/resume keys, and want the same bindings in Google Chrome. F10/F11 are default Expose keys for OSX and therefore not ideal for debugger control.
I’m open to unorthodox solutions, e.g. Quicksilver/AppleScript.
Related, but not-quite-helpful, pages:
Practice As Follows
Addy has started an issue ‘Ability to customize keyboard shortcuts/key bindings for DevTools’: