The ornamental design for a gamingchiprack, as shown and described.
FIG. 1 is a perspective view of a gaming chip rack;
FIG. 2 is a perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
In the drawing figures, the broken lines in FIGS. 1, 3, 4, 7 and 8 depict apertures for a locking system while the broken lines in FIG. 2 show gaming chips and apertures for a locking system for illustrative purposes only and form no part of the claimed design.