diff --git a/components/style/build_gecko.rs b/components/style/build_gecko.rs
index fa08db83622..0812e902707 100644
--- a/components/style/build_gecko.rs
+++ b/components/style/build_gecko.rs
@@ -662,7 +662,8 @@ mod bindings {
             .header(add_include("mozilla/ServoBindings.h"))
             .hide_type("nsACString_internal")
             .hide_type("nsAString_internal")
-            .raw_line("pub use nsstring::{nsACString, nsAString, nsString};")
+            .raw_line("pub use nsstring::{nsACString, nsAString, nsString, nsStringRepr};")
+            .raw_line("use gecko_bindings::structs::nsTArray;")
             .raw_line("type nsACString_internal = nsACString;")
             .raw_line("type nsAString_internal = nsAString;")
             .whitelisted_function("Servo_.*")
@@ -859,7 +860,13 @@ mod bindings {
             // type with zero_size_type. If we ever introduce immutable borrow types
             // which _do_ need to be opaque, we'll need a separate mode.
         }
-        write_binding_file(builder, BINDINGS_FILE, &Vec::new());
+        let fixups = vec![
+            Fixup {     // hack for gecko-owned string
+                pat: "<nsString".into(),
+                rep: "<nsStringRepr".into()
+            },
+        ];
+        write_binding_file(builder, BINDINGS_FILE, &fixups);
     }
 
     fn generate_atoms() {
diff --git a/components/style/gecko/generated/bindings.rs b/components/style/gecko/generated/bindings.rs
index 2008a696f11..ee99ffb4fe0 100644
--- a/components/style/gecko/generated/bindings.rs
+++ b/components/style/gecko/generated/bindings.rs
@@ -1,6 +1,7 @@
 /* automatically generated by rust-bindgen */
 
-pub use nsstring::{nsACString, nsAString, nsString};
+pub use nsstring::{nsACString, nsAString, nsString, nsStringRepr};
+use gecko_bindings::structs::nsTArray;
 type nsACString_internal = nsACString;
 type nsAString_internal = nsAString;
 use gecko_bindings::structs::mozilla::css::GridTemplateAreasValue;
@@ -943,6 +944,15 @@ extern "C" {
 extern "C" {
     pub fn Gecko_DropElementSnapshot(snapshot: ServoElementSnapshotOwned);
 }
+extern "C" {
+    pub fn Gecko_ResizeTArrayForStrings(array: *mut nsTArray<nsStringRepr>,
+                                        length: u32);
+}
+extern "C" {
+    pub fn Gecko_SetStyleGridTemplateArrayLengths(grid_template:
+                                                      *mut nsStyleGridTemplate,
+                                                  track_sizes: u32);
+}
 extern "C" {
     pub fn Gecko_CopyStyleGridTemplateValues(grid_template:
                                                  *mut nsStyleGridTemplate,