mash: Migrate shelf menus to wm common types

ash/shelf/shelf.cc

Index: ash/shelf/shelf.cc
diff --git a/ash/shelf/shelf.cc b/ash/shelf/shelf.cc
index f75908b4aef729c75f85c9ad3347bfef0847c935..cbc1e15c4b9f37fb03aeeacba823d785f5afedbb 100644
--- a/ash/shelf/shelf.cc
+++ b/ash/shelf/shelf.cc
@@ -44,11 +44,14 @@ const char Shelf::kNativeViewName[] = "ShelfView";
 
 Shelf::Shelf(ShelfModel* shelf_model,
              ShelfDelegate* shelf_delegate,
+             WmShelf* wm_shelf,
              ShelfWidget* shelf_widget)
     : delegate_(shelf_delegate),
+      wm_shelf_(wm_shelf),
       shelf_widget_(shelf_widget),
-      shelf_view_(new ShelfView(shelf_model, delegate_, this)),
+      shelf_view_(new ShelfView(shelf_model, delegate_, wm_shelf, this)),
       shelf_locking_manager_(this) {
+  DCHECK(wm_shelf_);
   shelf_view_->Init();
   shelf_widget_->GetContentsView()->AddChildView(shelf_view_);
   shelf_widget_->GetNativeView()->SetName(kNativeViewName);