mash: Remove ShelfDelegate; move functions to ShelfModel.

ash/test/shelf_view_test_api.h

Index: ash/test/shelf_view_test_api.h
diff --git a/ash/test/shelf_view_test_api.h b/ash/test/shelf_view_test_api.h
index fbb35c2c1faff89802ce6aed36f187fbfc169222..3967e7cc1eb28713967c96b224b03b013e142c44 100644
--- a/ash/test/shelf_view_test_api.h
+++ b/ash/test/shelf_view_test_api.h
@@ -28,7 +28,6 @@ class OverflowBubble;
 class OverflowButton;
 class ShelfButton;
 class ShelfButtonPressedMetricTracker;
-class ShelfDelegate;
 class ShelfTooltipManager;
 class ShelfView;
 
@@ -107,9 +106,6 @@ class ShelfViewTestAPI {
   // Wrapper for ShelfView::SameDragType.
   bool SameDragType(ShelfItemType typea, ShelfItemType typeb) const;
 
-  // Sets ShelfDelegate.
-  void SetShelfDelegate(ShelfDelegate* delegate);
-
   // Returns re-insertable bounds in screen.
   gfx::Rect GetBoundsForDragInsertInScreen();