Get rid of virtual Display::CreateScheduler.

content/browser/compositor/gpu_process_transport_factory.cc

Index: content/browser/compositor/gpu_process_transport_factory.cc
diff --git a/content/browser/compositor/gpu_process_transport_factory.cc b/content/browser/compositor/gpu_process_transport_factory.cc
index d446ca8fc7c2fbbb12998e9419922e034208946c..085da089a66968b87df91bdffaaade1e20c054cc 100644
--- a/content/browser/compositor/gpu_process_transport_factory.cc
+++ b/content/browser/compositor/gpu_process_transport_factory.cc
@@ -489,12 +489,14 @@ void GpuProcessTransportFactory::EstablishedGpuChannel(
 #endif
 
   // The Display owns and uses the |display_output_surface| created above.
+  auto* begin_frame_source = display_output_surface->GetBeginFrameSource();
   data->display = base::MakeUnique<cc::Display>(
       surface_manager_.get(), HostSharedBitmapManager::current(),
       BrowserGpuMemoryBufferManager::current(),
       compositor->GetRendererSettings(),
       compositor->surface_id_allocator()->id_namespace(),
-      compositor->task_runner().get(), std::move(display_output_surface));
+      compositor->task_runner().get(), begin_frame_source,
+      std::move(display_output_surface));
 
   // The |delegated_output_surface| is given back to the compositor, it
   // delegates to the Display as its root surface. Importantly, it shares the