The ornamental design for a littercontainmentassembly, as shown and described.
FIG. 1 is a top, front, right isometric view of a litter containment assembly in accordance with our design;
FIG. 2 is a top, front, right isometric view thereof, that is partially broken away to more clearly show features inside the litter containment assembly;
FIG. 3 is an enlarged detail of a portion of the view shown in FIG. 1;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a left side elevational view thereof;
FIG. 8 is a top plan view thereof;
FIG. 9 is a bottom plan view thereof; and,
FIG. 10 is a view taken along line 10-10 in FIG. 8 showing part of the inside of the litter containment assembly.
The broken lines shown in the drawings depict portions of the litter containment assembly that form no part of the claimed design.