VaapiVideoAccelerator: make Vaapi accelerator work with ozone

ui/ozone/public/surface_factory_ozone.cc

Index: ui/ozone/public/surface_factory_ozone.cc
diff --git a/ui/ozone/public/surface_factory_ozone.cc b/ui/ozone/public/surface_factory_ozone.cc
index 46cee88d6b318a81e2eeb4567c8fa4d634af623a..9478dd6ddb06919d6cc0aaa485bb239a98817ac6 100644
--- a/ui/ozone/public/surface_factory_ozone.cc
+++ b/ui/ozone/public/surface_factory_ozone.cc
@@ -35,6 +35,10 @@ intptr_t SurfaceFactoryOzone::GetNativeDisplay() {
   return 0;
 }
 
+int SurfaceFactoryOzone::GetDrmFd() {
+  return -1;
+}
+
 scoped_ptr<SurfaceOzoneEGL> SurfaceFactoryOzone::CreateEGLSurfaceForWidget(
     gfx::AcceleratedWidget widget) {
   NOTIMPLEMENTED();