diff --git a/components/style/build_gecko.rs b/components/style/build_gecko.rs
index f5bb4a598f3..6bb3b4aeddb 100644
--- a/components/style/build_gecko.rs
+++ b/components/style/build_gecko.rs
@@ -517,6 +517,7 @@ mod bindings {
             "nsCursorImage",
             "nsFont",
             "nsIAtom",
+            "nsMediaFeature",
             "nsRestyleHint",
             "nsStyleBackground",
             "nsStyleBorder",
diff --git a/components/style/gecko_bindings/bindings.rs b/components/style/gecko_bindings/bindings.rs
index 9d355444e27..19635b5af26 100644
--- a/components/style/gecko_bindings/bindings.rs
+++ b/components/style/gecko_bindings/bindings.rs
@@ -29,6 +29,7 @@ use gecko_bindings::structs::nsChangeHint;
 use gecko_bindings::structs::nsCursorImage;
 use gecko_bindings::structs::nsFont;
 use gecko_bindings::structs::nsIAtom;
+use gecko_bindings::structs::nsMediaFeature;
 use gecko_bindings::structs::nsRestyleHint;
 use gecko_bindings::structs::nsStyleBackground;
 unsafe impl Send for nsStyleBackground {}
@@ -759,6 +760,9 @@ extern "C" {
 extern "C" {
     pub fn Gecko_PropertyId_IsPrefEnabled(id: nsCSSPropertyID) -> bool;
 }
+extern "C" {
+    pub fn Gecko_GetMediaFeatures() -> *const nsMediaFeature;
+}
 extern "C" {
     pub fn Gecko_Construct_Default_nsStyleFont(ptr: *mut nsStyleFont,
                                                pres_context: