Propagate supported scanout formats from driver to SurfaceFactoryOzone.

ui/ozone/platform/drm/gpu/drm_gpu_display_manager.h

Index: ui/ozone/platform/drm/gpu/drm_gpu_display_manager.h
diff --git a/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.h b/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.h
index 681a7cdec489163deaa3e978de022482aa48fe04..135c6301184fd4bfb20ae7a8d30537617c48eb04 100644
--- a/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.h
+++ b/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.h
@@ -29,6 +29,9 @@ class DrmGpuDisplayManager {
   // displays is refreshed.
   std::vector<DisplaySnapshot_Params> GetDisplays();
 
+  // Returns all formats which can be scanned out by this PlaneManager.
+  const std::vector<uint32_t>& GetSupportedFormats() const;
+
   // Takes/releases the control of the DRM devices.
   bool TakeDisplayControl();
   void RelinquishDisplayControl();