[Ozone-GBM] Use dma_buf with surfaceless

ui/ozone/platform/dri/gbm_surface_factory.cc

Index: ui/ozone/platform/dri/gbm_surface_factory.cc
diff --git a/ui/ozone/platform/dri/gbm_surface_factory.cc b/ui/ozone/platform/dri/gbm_surface_factory.cc
index e04ae8e455bdd739700e794b88903c979003f7a0..bbb2c407426f4f6f935f1ac6ecd0c3a0967128ba 100644
--- a/ui/ozone/platform/dri/gbm_surface_factory.cc
+++ b/ui/ozone/platform/dri/gbm_surface_factory.cc
@@ -176,7 +176,11 @@ scoped_refptr<ui::NativePixmap> GbmSurfaceFactory::CreateNativePixmap(
   if (!buffer.get())
     return NULL;
 
-  return scoped_refptr<GbmPixmap>(new GbmPixmap(buffer));
+  scoped_refptr<GbmPixmap> pixmap(new GbmPixmap(buffer));
+  if (!pixmap->Initialize(drm_))
+    return NULL;
+
+  return pixmap;
 }
 
 OverlayCandidatesOzone* GbmSurfaceFactory::GetOverlayCandidates(