The ornamental design for a remote controller for electronic device, as shown and described.
FIG. 1 is a top, front, right side perspective view of a remote controller for an electronic device showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof, a bottom plan view thereof being a mirror image; and
FIG. 4 is a left side elevational view thereof.
The portions in even broken lines are for illustrative purposes only and form no part of the claimed design. The dot-dash broken lines define the boundaries of the claimed design but form no part thereof.