The ornamental design for a rollergrillassemblycanopy, as shown and described.
FIG. 1 is a front perspective view of a roller grill assembly canopy showing my new design shown in a position of use with an exemplary roller grill assembly;
FIG. 2 is a front perspective view thereof, shown with the exemplary roller grill assembly removed to show aspects of the design not visible whe combined;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a front view thereof,
FIG. 6 is a rear view thereof;
FIG. 7 is a top view thereof; and,
FIG. 8 is a bottom view thereof.
The broken lines are shown for the purpose of illustrating parts of the article that form no part of the claim.