--- a/layout/style/nsCSSParser.cpp
+++ b/layout/style/nsCSSParser.cpp
@@ -10807,17 +10807,17 @@ CSSParserImpl::ParseWebkitGradient(nsCSS
 bool
 CSSParserImpl::ParseWebkitTextStroke()
 {
   static const nsCSSProperty kWebkitTextStrokeIDs[] = {
     eCSSProperty__webkit_text_stroke_width,
     eCSSProperty__webkit_text_stroke_color
   };
 
-  const size_t numProps = ArrayLength(kWebkitTextStrokeIDs);
+  const size_t numProps = MOZ_ARRAY_LENGTH(kWebkitTextStrokeIDs);
   nsCSSValue values[numProps];
 
   int32_t found = ParseChoice(values, kWebkitTextStrokeIDs, numProps);
   if (found < 1) {
     return false;
   }
 
   if (!(found & 1)) { // Provide default -webkit-text-stroke-width