Bug 1506795 - Update WR bindings for API change in WR PR 3303. r=kats

Depends on D11759

Differential Revision: https://phabricator.services.mozilla.com/D11760

--HG--
extra : moz-landing-system : lando

gfx/webrender_bindings/src/bindings.rs

@@ -785,6 +785,9 @@ impl SceneBuilderHooks for APZCallbacks {
         unsafe { apz_register_updater(self.window_id) }
     }
 
+    fn pre_scene_build(&self) {
+    }
+
     fn pre_scene_swap(&self, scenebuild_time: u64) {
         unsafe {
             record_telemetry_time(TelemetryProbe::SceneBuildTime, scenebuild_time);
@@ -809,6 +812,9 @@ impl SceneBuilderHooks for APZCallbacks {
         unsafe { wr_schedule_render(self.window_id) }
     }
 
+    fn post_empty_scene_build(&self) {
+    }
+
     fn poke(&self) {
         unsafe { apz_run_updater(self.window_id) }
     }