What is that button? And I guess ol command, control, eject doing a straight normal restart is not available.
Obviously there is no eject button on your new MBP as there is nothing to eject! The eject button has ben replaced with a combination On/Off Power switch and biometric touch ID button. (See
these instructions for use.) One other thing you need to be aware of is the trackpad on your new MBP has
force touch which adds
an additional range of gestures.
If you want to replace your ⌘∧â︎ restart key sequence, there are tools such as
Keyboard Maestro that will enable you to create another three key combination or even a touch bar key that will replicate the former shortcut.