Add MD ink drop ripple to shelf app items

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 acb4e40149ff7966174f4331e92a61f28400ff4f..4fced370f2edb22f903d62c2eba40bc0bbb89f87 100644
--- a/ash/test/shelf_view_test_api.h
+++ b/ash/test/shelf_view_test_api.h
@@ -20,6 +20,7 @@ class Event;
 
 namespace views {
 class Button;
+class InkDrop;
 }
 
 namespace ash {
@@ -85,7 +86,9 @@ class ShelfViewTestAPI {
   int GetButtonSpacing();
 
   // Wrapper for ShelfView::ButtonPressed.
-  void ButtonPressed(views::Button* sender, const ui::Event& event);
+  void ButtonPressed(views::Button* sender,
+                     const ui::Event& event,
+                     views::InkDrop* ink_drop);
 
   // Wrapper for ShelfView::SameDragType.
   bool SameDragType(ShelfItemType typea, ShelfItemType typeb) const;