Revert of Update first download notification correctly if there are multiple notifications

chrome/browser/download/notification/download_notification_browsertest.cc

Index: chrome/browser/download/notification/download_notification_browsertest.cc
diff --git a/chrome/browser/download/notification/download_notification_browsertest.cc b/chrome/browser/download/notification/download_notification_browsertest.cc
index 6d08b3f26f9c220ce82c50cb8a3b482787034884..4b72ddafcd3267bea4e296b8e9fd4a2e6d265bc3 100644
--- a/chrome/browser/download/notification/download_notification_browsertest.cc
+++ b/chrome/browser/download/notification/download_notification_browsertest.cc
@@ -374,11 +374,6 @@
   EXPECT_EQ(message_center::NOTIFICATION_TYPE_PROGRESS,
             GetNotification(notification_id())->type());
 
-  // Confirms that the download update is delivered to the notification.
-  NotificationUpdateObserver download_notification_periodically_update_observer;
-  download_item()->UpdateObservers();
-  download_notification_periodically_update_observer.Wait();
-
   NotificationUpdateObserver download_notification_update_observer;
 
   // Requests to complete the download.
@@ -788,17 +783,6 @@
             GetNotification(notification_id1)->priority());
   EXPECT_EQ(message_center::DEFAULT_PRIORITY,
             GetNotification(notification_id2)->priority());
-
-  // Confirms that the updates of both download are delivered to the
-  // notifications.
-  NotificationUpdateObserver notification_periodically_update_observer1;
-  download1->UpdateObservers();
-  EXPECT_EQ(notification_id1,
-            notification_periodically_update_observer1.Wait());
-  NotificationUpdateObserver notification_periodically_update_observer2;
-  download2->UpdateObservers();
-  EXPECT_EQ(notification_id2,
-            notification_periodically_update_observer2.Wait());
 
   // Requests to complete the downloads.
   ui_test_utils::NavigateToURL(