The ornamental design for a case for electronicdevice, as shown and described.
FIG. 1 is a front perspective view of a case for electronic device, showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a rear perspective view thereof; and,
FIG. 9 is an exploded front perspective view thereof in an environment of use.
The broken lines illustrating portions of the case for electronic device form no part of the claimed design. The broken lines illustrating an electronic device in FIG. 9 form no part of the claimed design.