ozone: Allocate scanout buffers according to KMS modifiers.

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

Index: ui/ozone/platform/drm/gpu/crtc_controller.cc
diff --git a/ui/ozone/platform/drm/gpu/crtc_controller.cc b/ui/ozone/platform/drm/gpu/crtc_controller.cc
index 11e39dd5f7abfe6069d0ff7695717ba06e2523b6..68d504aaecd9674f0ec72f3b9c9504a459623427 100644
--- a/ui/ozone/platform/drm/gpu/crtc_controller.cc
+++ b/ui/ozone/platform/drm/gpu/crtc_controller.cc
@@ -120,6 +120,10 @@ bool CrtcController::IsFormatSupported(uint32_t fourcc_format,
                                                   crtc_);
 }
 
+std::vector<uint64_t> CrtcController::GetFormatModifiers(uint32_t format) {
+  return drm_->plane_manager()->GetFormatModifiers(crtc_, format);
+}
+
 void CrtcController::OnPageFlipEvent(unsigned int frame,
                                      unsigned int seconds,
                                      unsigned int useconds) {