style: Remove ServoStyleSet::PrependStyleSheet.

Differential Revision: https://phabricator.services.mozilla.com/D16284

1 files changed, 0 insertions, 22 deletions

diff --git a/components/style/stylesheet_set.rs b/components/style/stylesheet_set.rs
index 507534edc15..35060a959d6 100644
--- a/components/style/stylesheet_set.rs
+++ b/components/style/stylesheet_set.rs
@@ -345,14 +345,6 @@ where
         self.data_validity = cmp::max(validity, self.data_validity);
     }
 
-    fn prepend(&mut self, sheet: S) {
-        debug_assert!(!self.contains(&sheet));
-        // Inserting stylesheets somewhere but at the end changes the validity
-        // of the cascade data, but not the invalidation data.
-        self.set_data_validity_at_least(DataValidity::CascadeInvalid);
-        self.entries.insert(0, StylesheetSetEntry::new(sheet));
-    }
-
     /// Returns an iterator over the current list of stylesheets.
     fn iter(&self) -> StylesheetCollectionIterator<S> {
         StylesheetCollectionIterator(self.entries.iter())
@@ -417,20 +409,6 @@ macro_rules! sheet_set_methods {
             collection.append(sheet);
         }
 
-        /// Prepend a new stylesheet to the current set.
-        pub fn prepend_stylesheet(
-            &mut self,
-            device: Option<&Device>,
-            sheet: S,
-            guard: &SharedRwLockReadGuard,
-        ) {
-            debug!(concat!($set_name, "::prepend_stylesheet"));
-            self.collect_invalidations_for(device, &sheet, guard);
-
-            let collection = self.collection_for(&sheet, guard);
-            collection.prepend(sheet);
-        }
-
         /// Insert a given stylesheet before another stylesheet in the document.
         pub fn insert_stylesheet_before(
             &mut self,