The ornamental design for a frame of a stroller, as shown and described.
FIG. 1 is a perspective view of the frame of the stroller, showing my new design;
FIG. 2 is a front elevation view of the frame of the stroller shown in FIG. 1;
FIG. 3 is a rear elevation view of the frame of the stroller shown in FIG. 1;
FIG. 4 is a top plan view of the frame of the stroller shown in FIG. 1;
FIG. 5 is a bottom plan view of the frame of the stroller shown in FIG. 1;
FIG. 6 is a left-side elevation view of the frame of the stroller shown in FIG. 1;
FIG. 7 is a right-side elevation view of the frame of the stroller shown in FIG. 1;
FIG. 8 is a perspective view of the frame of the stroller shown in FIG. 1 with a set of canopy support; and,
FIG. 9 is a perspective view of the frame of the stroller shown in FIG. 1 but a handlebar of the frame of the stroller is situated at a position opposite to that in FIG. 1.
The broken line portions of the drawings are shown for illustrative purposes only and do not form a part of the claimed design.