Remove RuntimeEnabledFeatures flag MediaQueryParser (status=stable)

Source/core/css/parser/BisonCSSParser-in.cpp

Index: Source/core/css/parser/BisonCSSParser-in.cpp
diff --git a/Source/core/css/parser/BisonCSSParser-in.cpp b/Source/core/css/parser/BisonCSSParser-in.cpp
index b77044b993c7e784bfea3ccbb2cfc40938f38606..242b3b7cb4c5a6c0845cd15c549b88e56d3e5977 100644
--- a/Source/core/css/parser/BisonCSSParser-in.cpp
+++ b/Source/core/css/parser/BisonCSSParser-in.cpp
@@ -1103,19 +1103,6 @@ bool BisonCSSParser::parseDeclaration(MutableStylePropertySet* declaration, cons
     return ok;
 }
 
-PassRefPtrWillBeRawPtr<MediaQuerySet> BisonCSSParser::parseMediaQueryList(const String& string)
-{
-    ASSERT(!m_mediaList);
-
-    // can't use { because tokenizer state switches from mediaquery to initial state when it sees { token.
-    // instead insert one " " (which is caught by maybe_space in CSSGrammar.y)
-    setupParser("@-internal-medialist ", string, "");
-    cssyyparse(this);
-
-    ASSERT(m_mediaList);
-    return m_mediaList.release();
-}
-
 bool BisonCSSParser::parseAttributeMatchType(CSSSelector::AttributeMatchType& matchType, const String& string)
 {
     if (!RuntimeEnabledFeatures::cssAttributeCaseSensitivityEnabled() && !isUASheetBehavior(m_context.mode()))