The ornamental designs for the visor cap, as shown and described.
FIG. 1 is a perspective view of my new design for a visor cap;
FIG. 2 is a left side elevation view of the visor cap thereof;
FIG. 3 is a right side elevation view of the visor cap thereof;
FIG. 4 is a top view of the visor cap thereof;
FIG. 5 is a bottom view of the visor cap thereof;
FIG. 6 is a rear view of the visor cap thereof;
FIG. 7 is a front view of the visor cap thereof;
FIG. 8 is a perspective view of a second embodiment of my new design for a visor cap;
FIG. 9 is a perspective view of a third embodiment of my new design for a visor cap; and,
FIG. 10 is a rear view of the third embodiment of my visor cap thereof.
In the drawings, the broken lines on the headband and visor represent stitching forming part of the claimed design. All other broken lines represent environmental structure forming no part of the claim.