The ornamental design for a vehiclefrontbumper, as shown and described.
FIG. 1 is a front elevational view of a vehicle front bumper showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is an enlarged left side elevational view thereof, the right side view being a mirror image thereof;
FIG. 4 is a top, front and right side perspective view thereof; and,
FIG. 5 is a bottom, front and right side perspective view thereof.
The portions of the vehicle front bumper shown in a de-emphasized and half-tone form surrounded by broken lines representing a boundary are for illustrative and environmental purposes and form no part of the claimed design.