chromeos: Rename ash::WmShelf to Shelf

chrome/browser/ui/ash/launcher/arc_launcher_context_menu.h

Index: chrome/browser/ui/ash/launcher/arc_launcher_context_menu.h
diff --git a/chrome/browser/ui/ash/launcher/arc_launcher_context_menu.h b/chrome/browser/ui/ash/launcher/arc_launcher_context_menu.h
index a06ce5c256404e3e726aac6b0988eddc1d5a91d1..e23b3a4d1361f2ebc47e1741807368836bf5ab85 100644
--- a/chrome/browser/ui/ash/launcher/arc_launcher_context_menu.h
+++ b/chrome/browser/ui/ash/launcher/arc_launcher_context_menu.h
@@ -9,8 +9,8 @@
 #include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
 
 namespace ash {
+class Shelf;
 struct ShelfItem;
-class WmShelf;
 }
 
 // Class for context menu which is shown for ARC app in the shelf.
@@ -18,7 +18,7 @@ class ArcLauncherContextMenu : public LauncherContextMenu {
  public:
   ArcLauncherContextMenu(ChromeLauncherController* controller,
                          const ash::ShelfItem* item,
-                         ash::WmShelf* wm_shelf);
+                         ash::Shelf* shelf);
   ~ArcLauncherContextMenu() override;
 
   // ui::SimpleMenuModel::Delegate overrides: