Retain popup bubble mouse status even through updates.

ui/message_center/views/message_popup_collection.cc

Index: ui/message_center/views/message_popup_collection.cc
diff --git a/ui/message_center/views/message_popup_collection.cc b/ui/message_center/views/message_popup_collection.cc
index fb4cef90ae5dd97c08cb45ba28f54bed8ba812ca..4dd70a47128b9b0cefa16addbc37a5c531cfb362 100644
--- a/ui/message_center/views/message_popup_collection.cc
+++ b/ui/message_center/views/message_popup_collection.cc
@@ -450,20 +450,22 @@ void MessagePopupCollection::OnNotificationUpdated(
 
   for (NotificationList::PopupNotifications::iterator iter =
            notifications.begin(); iter != notifications.end(); ++iter) {
-    if ((*iter)->id() != notification_id)
+    Notification* notification = *iter;
+    DCHECK(notification);
+    ToastContentsView* toast_contents_view = *toast_iter;
+    DCHECK(toast_contents_view);
+
+    if (notification->id() != notification_id)
       continue;
 
     const RichNotificationData& optional_fields =
-        (*iter)->rich_notification_data();
+        notification->rich_notification_data();
     bool a11y_feedback_for_updates =
         optional_fields.should_make_spoken_feedback_for_popup_updates;
 
-    NotificationView* view =
-        NotificationView::Create(*toast_iter,
-                                 *(*iter),
-                                 true); // Create top-level notification.
-    view->set_context_menu_controller(context_menu_controller_.get());
-    (*toast_iter)->SetContents(view, a11y_feedback_for_updates);
+    toast_contents_view->UpdateContents(*notification,
+                                        a11y_feedback_for_updates);
+
     updated = true;
   }