Add unittests of ArcCustomNotificationView

components/exo/display.cc

Index: components/exo/display.cc
diff --git a/components/exo/display.cc b/components/exo/display.cc
index 44b975a24256036c792f93acae4a79d0cd3aa28c..be3790094cb6829ee8542d10ae3089448f2ea9e3 100644
--- a/components/exo/display.cc
+++ b/components/exo/display.cc
@@ -12,7 +12,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
-#include "components/exo/notification_surface.h"
+#include "components/exo/notification_surface_impl.h"
 #include "components/exo/notification_surface_manager.h"
 #include "components/exo/shared_memory.h"
 #include "components/exo/shell_surface.h"
@@ -227,8 +227,8 @@ std::unique_ptr<NotificationSurface> Display::CreateNotificationSurface(
     return nullptr;
   }
 
-  return base::MakeUnique<NotificationSurface>(notification_surface_manager_,
-                                               surface, notification_id);
+  return base::MakeUnique<NotificationSurfaceImpl>(
+      notification_surface_manager_, surface, notification_id);
 }
 
 }  // namespace exo