Clean up parseMediaQueryList from BisonCSSParser

Following https://codereview.chromium.org/171383002/ BisonCSSParser::parseMediaQueryList is no longer used. This CL removes that unused code.

BUG=

Review URL: https://codereview.chromium.org/201573006

git-svn-id: svn://svn.chromium.org/blink/trunk@169808 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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

@@ -1208,19 +1208,6 @@ 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();
-}
-
 static inline void filterProperties(bool important, const WillBeHeapVector<CSSProperty, 256>& input, WillBeHeapVector<CSSProperty, 256>& output, size_t& unusedEntries, BitArray<numCSSProperties>& seenProperties)
 {
     // Add properties in reverse order so that highest priority definitions are reached first. Duplicate definitions can then be ignored when found.

third_party/WebKit/Source/core/css/parser/BisonCSSParser.h

@@ -98,7 +98,6 @@ public:
     static PassRefPtrWillBeRawPtr<CSSValue> parseAnimationTimingFunctionValue(const String&);
     bool parseDeclaration(MutableStylePropertySet*, const String&, CSSParserObserver*, StyleSheetContents* contextStyleSheet);
     static PassRefPtr<ImmutableStylePropertySet> parseInlineStyleDeclaration(const String&, Element*);
-    PassRefPtrWillBeRawPtr<MediaQuerySet> parseMediaQueryList(const String&);
     PassOwnPtr<Vector<double> > parseKeyframeKeyList(const String&);
 
     static bool parseValue(MutableStylePropertySet*, CSSPropertyID, const String&, bool important, const Document&);