Reposition toasts to align the closed one.

ash/system/web_notification/web_notification_tray.cc

Index: ash/system/web_notification/web_notification_tray.cc
diff --git a/ash/system/web_notification/web_notification_tray.cc b/ash/system/web_notification/web_notification_tray.cc
index ed479d3afd7354e471cf07467ece9084cd86ea90..9c2aa04ba0342e5c9be8af569c5c60793de9a6a4 100644
--- a/ash/system/web_notification/web_notification_tray.cc
+++ b/ash/system/web_notification/web_notification_tray.cc
@@ -199,8 +199,6 @@ bool WebNotificationTray::ShowPopups() {
 void WebNotificationTray::UpdatePopups() {
   if (popup_bubble())
     popup_bubble()->bubble()->ScheduleUpdate();
-  if (popup_collection_.get())
-    popup_collection_->UpdatePopups();
 };
 
 void WebNotificationTray::HidePopups() {
@@ -305,8 +303,6 @@ void WebNotificationTray::AnchorUpdated() {
     popup_bubble()->bubble_view()->GetWidget()->StackAtTop();
     UpdateBubbleViewArrow(popup_bubble()->bubble_view());
   }
-  if (popup_collection_.get())
-    popup_collection_->UpdatePopups();
   if (message_center_bubble()) {
     message_center_bubble()->bubble_view()->UpdateBubble();
     UpdateBubbleViewArrow(message_center_bubble()->bubble_view());