We claim the ornamental design for a shower controller, as shown and described.
FIG. 1 is a top, front, right perspective view of an embodiment of the claimed design;
FIG. 2 is a top, front, left perspective view of the design shown in FIG. 1;
FIG. 3 is a top plan view of the design shown in FIG. 1;
FIG. 4 is a bottom plan view of the design shown in FIG. 1;
FIG. 5 is a front elevation view of the design shown in FIG. 1;
FIG. 6 is a rear elevation view of the design shown in FIG. 1; and,
FIG. 7 is a right elevation view of the design shown in FIG. 1, the left elevation view being a mirror image thereof in dashed lines.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings form no part of the claimed design. Broken lines formed by equal length dashes show unclaimed subject matter. Broken lines formed of unequal length dashes (i.e., dash-dot) define bounds of the claimed design. Break lines having a jagged element are not part of the claimed design and show that differing lengths (e.g., longer, shorter, etc.) of any portion (e.g., feature) split by a break line are possible.