Case for electronic device

FIG. 1 is a front, left and top perspective view of a case for electronic device showing our new design;

FIG. 2 is a rear, right and bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The even broken lines shown in the drawings depict portions of the case for electronic device that form no part of the claimed design.