Adding status to swap complete

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

Index: ui/ozone/platform/drm/gpu/drm_surface.cc
diff --git a/ui/ozone/platform/drm/gpu/drm_surface.cc b/ui/ozone/platform/drm/gpu/drm_surface.cc
index 0964c9e6997ddfa7948cd6af8591295ffac63398..4b5796b35206090e7ec03e8e4eac9891eb7f174a 100644
--- a/ui/ozone/platform/drm/gpu/drm_surface.cc
+++ b/ui/ozone/platform/drm/gpu/drm_surface.cc
@@ -20,6 +20,8 @@
 namespace ui {
 
 namespace {
+void EmptyPageFlipCallback(gfx::SwapResult result) {
+}
 
 scoped_refptr<DrmBuffer> AllocateBuffer(const scoped_refptr<DrmDevice>& drm,
                                         const gfx::Size& size) {
@@ -71,7 +73,7 @@ void DrmSurface::PresentCanvas(const gfx::Rect& damage) {
 
   UpdateNativeSurface(damage);
   window_delegate_->SchedulePageFlip(false /* is_sync */,
-                                     base::Bind(&base::DoNothing));
+                                     base::Bind(&EmptyPageFlipCallback));
 
   // Update our front buffer pointer.
   front_buffer_ ^= 1;