--- a/servo/components/style/gecko/generated/bindings.rs
+++ b/servo/components/style/gecko/generated/bindings.rs
@@ -1924,17 +1924,19 @@ extern "C" {
     pub fn Servo_StyleSheet_FromUTF8Bytes(loader: *mut Loader,
                                           gecko_stylesheet:
                                               *mut ServoStyleSheet,
                                           data: *const nsACString,
                                           parsing_mode: SheetParsingMode,
                                           extra_data:
                                               *mut RawGeckoURLExtraData,
                                           line_number_offset: u32,
-                                          quirks_mode: nsCompatibility)
+                                          quirks_mode: nsCompatibility,
+                                          reusable_sheets:
+                                              *mut LoaderReusableStyleSheets)
      -> RawServoStyleSheetContentsStrong;
 }
 extern "C" {
     pub fn Servo_StyleSheet_Empty(parsing_mode: SheetParsingMode)
      -> RawServoStyleSheetContentsStrong;
 }
 extern "C" {
     pub fn Servo_StyleSheet_HasRules(sheet:

--- a/servo/ports/geckolib/glue.rs
+++ b/servo/ports/geckolib/glue.rs
@@ -64,17 +64,18 @@ use style::gecko_bindings::bindings::Raw
 use style::gecko_bindings::bindings::RawServoAnimationValueTableBorrowed;
 use style::gecko_bindings::bindings::RawServoStyleRuleBorrowed;
 use style::gecko_bindings::bindings::RawServoStyleSet;
 use style::gecko_bindings::bindings::ServoStyleContextBorrowedOrNull;
 use style::gecko_bindings::bindings::nsTArrayBorrowed_uintptr_t;
 use style::gecko_bindings::bindings::nsTimingFunctionBorrowed;
 use style::gecko_bindings::bindings::nsTimingFunctionBorrowedMut;
 use style::gecko_bindings::structs;
-use style::gecko_bindings::structs::{CSSPseudoElementType, CompositeOperation, Loader};
+use style::gecko_bindings::structs::{CSSPseudoElementType, CompositeOperation};
+use style::gecko_bindings::structs::{Loader, LoaderReusableStyleSheets};
 use style::gecko_bindings::structs::{RawServoStyleRule, ServoStyleContextStrong};
 use style::gecko_bindings::structs::{ServoStyleSheet, SheetParsingMode, nsIAtom, nsCSSPropertyID};
 use style::gecko_bindings::structs::{nsCSSFontFaceRule, nsCSSCounterStyleRule};
 use style::gecko_bindings::structs::{nsRestyleHint, nsChangeHint, PropertyValuePair};
 use style::gecko_bindings::structs::IterationCompositeOperation;
 use style::gecko_bindings::structs::MallocSizeOf;
 use style::gecko_bindings::structs::OriginFlags;
 use style::gecko_bindings::structs::OriginFlags_Author;
@@ -862,34 +863,35 @@ pub extern "C" fn Servo_StyleSheet_Empty
 #[no_mangle]
 pub extern "C" fn Servo_StyleSheet_FromUTF8Bytes(
     loader: *mut Loader,
     stylesheet: *mut ServoStyleSheet,
     data: *const nsACString,
     mode: SheetParsingMode,
     extra_data: *mut URLExtraData,
     line_number_offset: u32,
-    quirks_mode: nsCompatibility
+    quirks_mode: nsCompatibility,
+    reusable_sheets: *mut LoaderReusableStyleSheets
 ) -> RawServoStyleSheetContentsStrong {
     let global_style_data = &*GLOBAL_STYLE_DATA;
     let input = unsafe { data.as_ref().unwrap().as_str_unchecked() };
 
     let origin = match mode {
         SheetParsingMode::eAuthorSheetFeatures => Origin::Author,
         SheetParsingMode::eUserSheetFeatures => Origin::User,
         SheetParsingMode::eAgentSheetFeatures => Origin::UserAgent,
         SheetParsingMode::eSafeAgentSheetFeatures => Origin::UserAgent,
     };
 
     let reporter = ErrorReporter::new(stylesheet, loader, extra_data);
     let url_data = unsafe { RefPtr::from_ptr_ref(&extra_data) };
     let loader = if loader.is_null() {
         None
     } else {
-        Some(StylesheetLoader::new(loader, stylesheet, ptr::null_mut()))
+        Some(StylesheetLoader::new(loader, stylesheet, reusable_sheets))
     };
 
     // FIXME(emilio): loader.as_ref() doesn't typecheck for some reason?
     let loader: Option<&StyleStylesheetLoader> = match loader {
         None => None,
         Some(ref s) => Some(s),
     };