Not same... but
I simulated the effect ( no screen shots did months ago playing around)
1. made a panel about 40% (with notification, volume pager ect. only)
2. click 'don't 'reserve space on border'
3.make panel about 50% wider
4. posion at edge at center of screen.
5. lock it their!
Can see window's/app's menu then panel then window icons (min, max, quit). Use apperances and window themes to better blend effect together.
P.S. can also have windows display with out decorations ect (but won't have min/max/quit icon either)