The ornamental design for a surfaceconfiguration of a front bumper for a vehicle, as shown and described.
FIG. 1 is a front view of a surface configuration of a front bumper for a vehicle according to my novel design;
FIG. 2 is a left side view of the surface configuration of a front bumper for a vehicle according to my novel design, the right side view being mirror symmetrical; and,
FIG. 3 is a left perspective view of the surface configuration of a front bumper for a vehicle according to my novel design, the right perspective view being mirror symmetrical.
The broken lines are for illustrative purposes only and form no part of the claimed design.