Replace RwLock<MediaList> with shared_lock::Locked<MediaList>

1 files changed, 4 insertions, 1 deletions

diff --git a/components/script/dom/htmlmetaelement.rs b/components/script/dom/htmlmetaelement.rs
index a751486de7d..2f78e74d3b4 100644
--- a/components/script/dom/htmlmetaelement.rs
+++ b/components/script/dom/htmlmetaelement.rs
@@ -99,12 +99,15 @@ impl HTMLMetaElement {
             let content = content.value();
             if !content.is_empty() {
                 if let Some(translated_rule) = ViewportRule::from_meta(&**content) {
+                    let document = self.upcast::<Node>().owner_doc();
+                    let shared_lock = document.style_shared_lock();
                     *self.stylesheet.borrow_mut() = Some(Arc::new(Stylesheet {
                         rules: CssRules::new(vec![CssRule::Viewport(Arc::new(RwLock::new(translated_rule)))]),
                         origin: Origin::Author,
+                        shared_lock: shared_lock.clone(),
                         base_url: window_from_node(self).get_url(),
                         namespaces: Default::default(),
-                        media: Default::default(),
+                        media: Arc::new(shared_lock.wrap(Default::default())),
                         // Viewport constraints are always recomputed on resize; they don't need to
                         // force all styles to be recomputed.
                         dirty_on_viewport_size_change: AtomicBool::new(false),