Propagate supported scanout formats from driver to SurfaceFactoryOzone.

ui/ozone/platform/drm/gpu/drm_thread_proxy.cc

Index: ui/ozone/platform/drm/gpu/drm_thread_proxy.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_thread_proxy.cc b/ui/ozone/platform/drm/gpu/drm_thread_proxy.cc
index b46e11624ab33268f802299a1f8e5a4ca4986a18..8ae223c004a5ceae704ed8358bfdfef9f257424b 100644
--- a/ui/ozone/platform/drm/gpu/drm_thread_proxy.cc
+++ b/ui/ozone/platform/drm/gpu/drm_thread_proxy.cc
@@ -39,4 +39,13 @@ scoped_refptr<GbmBuffer> DrmThreadProxy::CreateBuffer(
   return buffer;
 }
 
+void DrmThreadProxy::GetScanoutFormats(
+    gfx::AcceleratedWidget widget,
+    std::vector<gfx::BufferFormat>* scanout_formats) {
+  PostSyncTask(
+      drm_thread_.task_runner(),
+      base::Bind(&DrmThread::GetScanoutFormats, base::Unretained(&drm_thread_),
+                 widget, scanout_formats));
+}
+
 }  // namespace ui