Display articles in Content Suggestions

ios/chrome/browser/ui/content_suggestions/content_suggestions_view_controller.mm

Index: ios/chrome/browser/ui/content_suggestions/content_suggestions_view_controller.mm
diff --git a/ios/chrome/browser/ui/content_suggestions/content_suggestions_view_controller.mm b/ios/chrome/browser/ui/content_suggestions/content_suggestions_view_controller.mm
index 4ed54b7668c9f967bf4ae9311a0d3538b7e7e8f2..276c6f47f47b9997930842b6cf693fdc4261cca2 100644
--- a/ios/chrome/browser/ui/content_suggestions/content_suggestions_view_controller.mm
+++ b/ios/chrome/browser/ui/content_suggestions/content_suggestions_view_controller.mm
@@ -71,15 +71,10 @@ const NSTimeInterval kAnimationDuration = 0.35;
 
   CollectionViewItem* item =
       [self.collectionViewModel itemAtIndexPath:indexPath];
-  switch (item.type) {
-    case ItemTypeStack:
-      [self.suggestionCommandHandler openReadingList];
-      break;
-    case ItemTypeArticle:
+  switch ([self.collectionUpdater contentSuggestionTypeForItem:item]) {
+    case ContentSuggestionTypeArticle:
       [self openArticle:item];
       break;
-    default:
-      break;
   }
 }