Remove RuntimeEnabledFeatures flag MediaQueryParser (status=stable)

Source/core/css/MediaList.cpp

Index: Source/core/css/MediaList.cpp
diff --git a/Source/core/css/MediaList.cpp b/Source/core/css/MediaList.cpp
index fb8eca12c027be855681e604260212f5501c5ba9..defe15301d87e53e3f96ed63d4d2711d5f2cc08a 100644
--- a/Source/core/css/MediaList.cpp
+++ b/Source/core/css/MediaList.cpp
@@ -72,11 +72,7 @@ PassRefPtrWillBeRawPtr<MediaQuerySet> MediaQuerySet::create(const String& mediaS
     if (mediaString.isEmpty())
         return MediaQuerySet::create();
 
-    if (RuntimeEnabledFeatures::mediaQueryParserEnabled())
-        return MediaQueryParser::parseMediaQuerySet(mediaString);
-
-    BisonCSSParser parser(strictCSSParserContext());
-    return parser.parseMediaQueryList(mediaString);
+    return MediaQueryParser::parseMediaQuerySet(mediaString);
 }
 
 PassRefPtrWillBeRawPtr<MediaQuerySet> MediaQuerySet::createOffMainThread(const String& mediaString)