diff --git a/components/style/gecko/wrapper.rs b/components/style/gecko/wrapper.rs
index d4d0c2dd3db..85ed9152580 100644
--- a/components/style/gecko/wrapper.rs
+++ b/components/style/gecko/wrapper.rs
@@ -296,13 +296,10 @@ impl<'le> fmt::Debug for GeckoElement<'le> {
 
 impl<'le> GeckoElement<'le> {
     /// Parse the style attribute of an element.
-    pub fn parse_style_attribute(value: &str) -> PropertyDeclarationBlock {
-        // FIXME(bholley): Real base URL and error reporter.
-        let base_url = &*DUMMY_BASE_URL;
-        // FIXME(heycam): Needs real ParserContextExtraData so that URLs parse
-        // properly.
-        let extra_data = ParserContextExtraData::default();
-        parse_style_attribute(value, &base_url, Box::new(StdoutErrorReporter), extra_data)
+    pub fn parse_style_attribute(value: &str,
+                                 base_url: &ServoUrl,
+                                 extra_data: ParserContextExtraData) -> PropertyDeclarationBlock {
+        parse_style_attribute(value, base_url, Box::new(StdoutErrorReporter), extra_data)
     }
 
     fn flags(&self) -> u32 {
diff --git a/components/style/gecko_bindings/bindings.rs b/components/style/gecko_bindings/bindings.rs
index 8a38318de01..a4454c46039 100644
--- a/components/style/gecko_bindings/bindings.rs
+++ b/components/style/gecko_bindings/bindings.rs
@@ -1415,7 +1415,9 @@ extern "C" {
      -> bool;
 }
 extern "C" {
-    pub fn Servo_ParseStyleAttribute(data: *const nsACString_internal)
+    pub fn Servo_ParseStyleAttribute(data: *const nsACString_internal,
+                                     base: *const nsACString_internal,
+                                     extraData: *const GeckoParserExtraData)
      -> RawServoDeclarationBlockStrong;
 }
 extern "C" {
diff --git a/ports/geckolib/glue.rs b/ports/geckolib/glue.rs
index 0c85b8a45a7..1a3ee5ac9a9 100644
--- a/ports/geckolib/glue.rs
+++ b/ports/geckolib/glue.rs
@@ -718,9 +718,13 @@ pub extern "C" fn Servo_ParseProperty(property: *const nsACString, value: *const
 }
 
 #[no_mangle]
-pub extern "C" fn Servo_ParseStyleAttribute(data: *const nsACString) -> RawServoDeclarationBlockStrong {
+pub extern "C" fn Servo_ParseStyleAttribute(data: *const nsACString,
+                                            base: *const nsACString,
+                                            raw_extra_data: *const structs::GeckoParserExtraData)
+                                            -> RawServoDeclarationBlockStrong {
     let value = unsafe { data.as_ref().unwrap().as_str_unchecked() };
-    Arc::new(RwLock::new(GeckoElement::parse_style_attribute(value))).into_strong()
+    make_context!((base, raw_extra_data) => (base_url, extra_data));
+    Arc::new(RwLock::new(GeckoElement::parse_style_attribute(value, &base_url, extra_data))).into_strong()
 }
 
 #[no_mangle]