The ornamental design for a debrisbag, as shown and described.
FIG. 1 is a perspective view of a debris bag showing our new design;
FIG. 2 is a front view of the debris bag shown in FIG. 1;
FIG. 3 is a right side view of the debris bag shown in FIG. 1, with the left side being a mirror image thereof;
FIG. 4 is a top plan view of the debris bag shown in FIG. 1; and,
FIG. 5 is a bottom view of the debris bag shown in FIG. 1.
The cross-hatching and brick-like shading in the figures is fragmentarily shown for convenience of illustration, it being understood that the shading is uniformly continued over the surface on which it appears.