The ornamental design for headlight housing, as shown and described.
FIG. 1 is a perspective view of an automobile having a left and right side headlight housing according to the present invention, the remaining portions of the automobile shown in broken lines as not forming a part of the claimed design.
FIG. 2 is a perspective view of the left side headlight housing shown in FIG. 1.
FIG. 3 is a perspective view of the headlight housing shown in FIG. 2 from the opposite side, the right side headlight housing being a mirror image.
FIG. 4 is a front view of the left side headlight housing shown in FIGS. 2 and 3, the right side headlight housing being a mirror image; and,
FIG. 5 is a perspective reverse view of the left side headlight housing shown in FIGS. 2 -4, the right side headlight housing being a mirror image.