Remove CSSParserValue::createCSSValue and unused callers

Source/core/css/CSSValueList.h

Index: Source/core/css/CSSValueList.h
diff --git a/Source/core/css/CSSValueList.h b/Source/core/css/CSSValueList.h
index 818ba1592a4b6aa13d46a8a788f1875b0c59d742..cf015a83d32ba6df5a00b2ca1cdb7db2f8148848 100644
--- a/Source/core/css/CSSValueList.h
+++ b/Source/core/css/CSSValueList.h
@@ -27,8 +27,6 @@
 
 namespace blink {
 
-class CSSParserValueList;
-
 class CSSValueList : public CSSValue {
 public:
     static PassRefPtrWillBeRawPtr<CSSValueList> createCommaSeparated()
@@ -43,10 +41,6 @@ public:
     {
         return adoptRefWillBeNoop(new CSSValueList(SlashSeparator));
     }
-    static PassRefPtrWillBeRawPtr<CSSValueList> createFromParserValueList(CSSParserValueList* list)
-    {
-        return adoptRefWillBeNoop(new CSSValueList(list));
-    }
 
     size_t length() const { return m_values.size(); }
     CSSValue* item(size_t index) { return m_values[index].get(); }
@@ -75,7 +69,6 @@ protected:
 
 private:
     explicit CSSValueList(ValueListSeparator);
-    explicit CSSValueList(CSSParserValueList*);
 
     WillBeHeapVector<RefPtrWillBeMember<CSSValue>, 4> m_values;
 };