Ozone: Dont hardcode format to YUV when using Overlay Composition.

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

Index: ui/ozone/platform/drm/gpu/drm_window.h
diff --git a/ui/ozone/platform/drm/gpu/drm_window.h b/ui/ozone/platform/drm/gpu/drm_window.h
index 629fbdcd7badd1721f9dac2c27560750c6ff9f2f..263531355403dc981702eb223890fcbd9ac707fc 100644
--- a/ui/ozone/platform/drm/gpu/drm_window.h
+++ b/ui/ozone/platform/drm/gpu/drm_window.h
@@ -96,6 +96,15 @@ class OZONE_EXPORT DrmWindow {
   void GetVSyncParameters(
       const gfx::VSyncProvider::UpdateVSyncCallback& callback) const;
 
+  // Returns optimal buffer configuration which can be supported by the display
+  // on which this window is shown.
+  OverlayBufferConfiguration GetOverlayBufferConfiguration(
+      const gfx::Rect& display_bounds,
+      const gfx::RectF& crop_rect,
+      const gfx::Size& current_buffer_size,
+      uint32_t z_order,
+      bool video_content);
+
  private:
   // Draw the last set cursor & update the cursor plane.
   void ResetCursor(bool bitmap_only);