--- a/layout/style/ServoBindingList.h
+++ b/layout/style/ServoBindingList.h
@@ -218,16 +218,19 @@ SERVO_BINDING_FUNC(Servo_DeclarationBloc
                    RawGeckoURLExtraData* data,
                    mozilla::LengthParsingMode length_parsing_mode)
 SERVO_BINDING_FUNC(Servo_DeclarationBlock_RemoveProperty, void,
                    RawServoDeclarationBlockBorrowed declarations,
                    const nsACString* property)
 SERVO_BINDING_FUNC(Servo_DeclarationBlock_RemovePropertyById, void,
                    RawServoDeclarationBlockBorrowed declarations,
                    nsCSSPropertyID property)
+SERVO_BINDING_FUNC(Servo_DeclarationBlock_HasCSSWideKeyword, bool,
+                   RawServoDeclarationBlockBorrowed declarations,
+                   nsCSSPropertyID property)
 // Compose animation value for a given property.
 // |base_values| is nsRefPtrHashtable<nsUint32HashKey, RawServoAnimationValue>.
 // We use void* to avoid exposing nsRefPtrHashtable in FFI.
 SERVO_BINDING_FUNC(Servo_AnimationCompose, void,
                    RawServoAnimationValueMapBorrowed animation_values,
                    void* base_values,
                    nsCSSPropertyID property,
                    RawGeckoAnimationPropertySegmentBorrowed animation_segment,