Move message_center::CustomNotificationView to arc::ArcNotificationView

ui/message_center/views/message_view_factory.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/message_center/views/message_view_factory.h"
 
 #include "ui/message_center/notification_types.h"
-#include "ui/message_center/views/custom_notification_view.h"
 #include "ui/message_center/views/notification_view.h"
 
 #if defined(OS_WIN)
 #include "ui/base/win/shell.h"
 #endif
 
 namespace message_center {
 
 // static
 MessageView* MessageViewFactory::Create(MessageCenterController* controller,
                                         const Notification& notification,
                                         bool top_level) {
   MessageView* notification_view = nullptr;
   switch (notification.type()) {
     case NOTIFICATION_TYPE_BASE_FORMAT:
     case NOTIFICATION_TYPE_IMAGE:
     case NOTIFICATION_TYPE_MULTIPLE:
     case NOTIFICATION_TYPE_SIMPLE:
     case NOTIFICATION_TYPE_PROGRESS:
       // All above roads lead to the generic NotificationView.
       notification_view = new NotificationView(controller, notification);
       break;
+#if defined(TOOLKIT_VIEWS) && !defined(OS_MACOSX)
     case NOTIFICATION_TYPE_CUSTOM:
-      notification_view = new CustomNotificationView(controller, notification);
+      notification_view =
+          notification.delegate()
+              ->CreateCustomMessageView(controller, notification)
+              .release();
       break;
+#endif
     default:
       // If the caller asks for an unrecognized kind of view (entirely possible
       // if an application is running on an older version of this code that
       // doesn't have the requested kind of notification template), we'll fall
       // back to a notification instance that will provide at least basic
       // functionality.
-      LOG(WARNING) << "Unable to fulfill request for unrecognized "
-                   << "notification type " << notification.type() << ". "
-                   << "Falling back to simple notification type.";
+      LOG(WARNING) << "Unable to fulfill request for unrecognized or"
+                   << "unsupported notification type " << notification.type()
+                   << ". Falling back to simple notification type.";
       notification_view = new NotificationView(controller, notification);
   }
 
 #if defined(OS_LINUX)
   // Don't create shadows for notification toasts on Linux or CrOS.
   if (top_level)
     return notification_view;
 #endif
 
 #if defined(OS_WIN)
   // Don't create shadows for notifications on Windows under classic theme.
   if (top_level && !ui::win::IsAeroGlassEnabled()) {
     return notification_view;
   }
 #endif  // OS_WIN
 
   notification_view->SetIsNested();
   return notification_view;
 }
 
 }  // namespace message_center