I claim the ornamental design for a barbecue grill, as shown and described.
FIG. 1 is a perspective view of a barbecue grill of the present invention, showing my design;
FIG. 2 is a front view of the barbecue grill shown in FIG. 1;
FIG. 3 is a rear view of the barbecue grill shown in FIG. 1;
FIG. 4 is a left side view of the barbecue grill shown in FIG. 1,
FIG. 5 is a right side view of the barbecue grill shown in FIG. 1;
FIG. 6 is a top view of the barbecue grill shown in FIG. 1; and,
FIG. 7 is a bottom view of the barbecue grill shown in FIG. 1.
FIG. 8 is an environmental view of the barbecue grill in FIG. 1 being closed the lids and collapsed the legs.
The broken lines shown in the drawings are for the purpose of illustrating unclaimed portions of the barbecue grill and form no part of the claimed design.