diff --git a/components/script/dom/htmlmetaelement.rs b/components/script/dom/htmlmetaelement.rs
index f91e4339f1d..168c29cdb0b 100644
--- a/components/script/dom/htmlmetaelement.rs
+++ b/components/script/dom/htmlmetaelement.rs
@@ -21,7 +21,6 @@ use crate::dom::node::{
 use crate::dom::virtualmethods::VirtualMethods;
 use dom_struct::dom_struct;
 use html5ever::{LocalName, Prefix};
-use parking_lot::RwLock;
 use servo_arc::Arc;
 use servo_config::pref;
 use std::sync::atomic::AtomicBool;
@@ -112,15 +111,12 @@ impl HTMLMetaElement {
                     let shared_lock = document.style_shared_lock();
                     let rule = CssRule::Viewport(Arc::new(shared_lock.wrap(translated_rule)));
                     let sheet = Arc::new(Stylesheet {
-                        contents: StylesheetContents {
-                            rules: CssRules::new(vec![rule], shared_lock),
-                            origin: Origin::Author,
-                            namespaces: Default::default(),
-                            quirks_mode: document.quirks_mode(),
-                            url_data: RwLock::new(window_from_node(self).get_url()),
-                            source_map_url: RwLock::new(None),
-                            source_url: RwLock::new(None),
-                        },
+                        contents: StylesheetContents::from_shared_data(
+                            CssRules::new(vec![rule], shared_lock),
+                            Origin::Author,
+                            window_from_node(self).get_url(),
+                            document.quirks_mode(),
+                        ),
                         media: Arc::new(shared_lock.wrap(MediaList::empty())),
                         shared_lock: shared_lock.clone(),
                         disabled: AtomicBool::new(false),
diff --git a/components/script/stylesheet_loader.rs b/components/script/stylesheet_loader.rs
index 20fa6872e49..48e3016458e 100644
--- a/components/script/stylesheet_loader.rs
+++ b/components/script/stylesheet_loader.rs
@@ -29,7 +29,6 @@ use net_traits::{
     FetchMetadata, FetchResponseListener, FilteredMetadata, Metadata, NetworkError, ReferrerPolicy,
 };
 use net_traits::{ResourceFetchTiming, ResourceTimingType};
-use parking_lot::RwLock;
 use servo_arc::Arc;
 use servo_url::ImmutableOrigin;
 use servo_url::ServoUrl;
@@ -41,9 +40,7 @@ use style::parser::ParserContext;
 use style::shared_lock::{Locked, SharedRwLock};
 use style::stylesheets::import_rule::ImportSheet;
 use style::stylesheets::StylesheetLoader as StyleStylesheetLoader;
-use style::stylesheets::{
-    CssRules, ImportRule, Namespaces, Origin, Stylesheet, StylesheetContents,
-};
+use style::stylesheets::{CssRules, ImportRule, Origin, Stylesheet, StylesheetContents};
 use style::values::CssUrl;
 
 pub trait StylesheetOwner {
@@ -363,15 +360,12 @@ impl<'a> StyleStylesheetLoader for StylesheetLoader<'a> {
         media: Arc<Locked<MediaList>>,
     ) -> Arc<Locked<ImportRule>> {
         let sheet = Arc::new(Stylesheet {
-            contents: StylesheetContents {
-                rules: CssRules::new(Vec::new(), lock),
-                origin: context.stylesheet_origin,
-                url_data: RwLock::new(context.url_data.clone()),
-                quirks_mode: context.quirks_mode,
-                namespaces: RwLock::new(Namespaces::default()),
-                source_map_url: RwLock::new(None),
-                source_url: RwLock::new(None),
-            },
+            contents: StylesheetContents::from_shared_data(
+                CssRules::new(Vec::new(), lock),
+                context.stylesheet_origin,
+                context.url_data.clone(),
+                context.quirks_mode,
+            ),
             media: media,
             shared_lock: lock.clone(),
             disabled: AtomicBool::new(false),