ash: Rename more Launcher classes to Shelf*.

ash/shelf/shelf_view.h

Index: ash/shelf/shelf_view.h
diff --git a/ash/shelf/shelf_view.h b/ash/shelf/shelf_view.h
index 4d6545e3a2919e1427e26d880bcf4787967a3e4f..56901ed61af7aee76c17deb140e89ce66b36f8eb 100644
--- a/ash/shelf/shelf_view.h
+++ b/ash/shelf/shelf_view.h
@@ -34,8 +34,8 @@ class ShelfViewTestAPI;
 
 class LauncherDelegate;
 struct LauncherItem;
-class LauncherItemDelegateManager;
 class ShelfIconObserver;
+class ShelfItemDelegateManager;
 class ShelfModel;
 
 namespace internal {
@@ -431,8 +431,8 @@ class ASH_EXPORT ShelfView : public views::View,
   // The rip off view when a snap back operation is underway.
   views::View* snap_back_from_rip_off_view_;
 
-  // Holds LauncherItemDelegateManager.
-  LauncherItemDelegateManager* item_manager_;
+  // Holds ShelfItemDelegateManager.
+  ShelfItemDelegateManager* item_manager_;
 
   // Holds ShelfLayoutManager.
   ShelfLayoutManager* layout_manager_;