SurfaceFactoryOzone: expose scanout supported GpuMemoryBufferAttribs

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 389dfc54ef85dac62874888639648d7554c52e53..277b5557495641dc4dba1d79f43617e54c450a4d 100644
--- a/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.h
+++ b/ui/ozone/platform/drm/gpu/drm_gpu_display_manager.h
@@ -11,6 +11,7 @@
 #include <vector>
 
 #include "base/macros.h"
+#include "ui/gfx/buffer_types.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/ozone/common/gpu/ozone_gpu_message_params.h"
 
@@ -39,6 +40,13 @@ class DrmGpuDisplayManager {
   void GetScanoutFormats(gfx::AcceleratedWidget widget,
                          std::vector<gfx::BufferFormat>* scanout_formats);
 
+  // Returns all scanout GpuMemoryBufferAttribs for a particular display
+  // controller connected to |widget|, or for for the default display
+  // controller in case |widget| == kNullAcceleratedWidget.
+  void GetScanoutFormatsWithModifiers(
+      gfx::AcceleratedWidget widget,
+      gfx::GpuMemoryBufferAttribVector* scanout_combinations);
+
   // Takes/releases the control of the DRM devices.
   bool TakeDisplayControl();
   void RelinquishDisplayControl();