Further changes required by Servo

components/style/driver.rs

@@ -140,6 +140,7 @@ where
                     // ensures that we process all the elements at a given depth before
                     // proceeding to the next depth, which is important for style sharing.
                     rayon::scope_fifo(|scope| {
+                        #[cfg(feature = "gecko")]
                         gecko_profiler_label!(Layout, StyleComputation);
                         parallel::traverse_nodes(
                             drain,