Notificaitons refactor step 2

ash/system/web_notification/web_notification_tray_unittest.cc

Index: ash/system/web_notification/web_notification_tray_unittest.cc
diff --git a/ash/system/web_notification/web_notification_tray_unittest.cc b/ash/system/web_notification/web_notification_tray_unittest.cc
index 23ff2ff6a1e99432f4e162c68ea9a7011465c55a..ae43b76cc84e81bcfe0b130bb03e181f94cebd91 100644
--- a/ash/system/web_notification/web_notification_tray_unittest.cc
+++ b/ash/system/web_notification/web_notification_tray_unittest.cc
@@ -16,7 +16,7 @@
 #include "ui/message_center/message_center_tray.h"
 #include "ui/message_center/message_popup_bubble.h"
 #include "ui/message_center/notification_list.h"
-#include "ui/notifications/notification_types.h"
+#include "ui/message_center/notification_types.h"
 #include "ui/views/controls/label.h"
 #include "ui/views/layout/fill_layout.h"
 #include "ui/views/view.h"
@@ -74,7 +74,7 @@ class TestDelegate : public message_center::MessageCenter::Delegate {
   void AddNotification(WebNotificationTray* tray, const std::string& id) {
     notification_ids_.insert(id);
     get_message_center()->AddNotification(
-        ui::notifications::NOTIFICATION_TYPE_SIMPLE,
+        message_center::NOTIFICATION_TYPE_SIMPLE,
         id,
         ASCIIToUTF16("Test Web Notification"),
         ASCIIToUTF16("Notification message body."),