Remove CSSParserValue::createCSSValue and unused callers

Source/core/css/CSSFunctionValue.h

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #ifndef CSSFunctionValue_h
 #define CSSFunctionValue_h
 
 #include "core/css/CSSValue.h"
 
 namespace blink {
 
 class CSSValueList;
-struct CSSParserFunction;
 
 class CSSFunctionValue : public CSSValue {
 public:
-    static PassRefPtrWillBeRawPtr<CSSFunctionValue> create(CSSParserFunction* function)
-    {
-        return adoptRefWillBeNoop(new CSSFunctionValue(function));
-    }
-
     static PassRefPtrWillBeRawPtr<CSSFunctionValue> create(String name, PassRefPtrWillBeRawPtr<CSSValueList> args)
     {
         return adoptRefWillBeNoop(new CSSFunctionValue(name, args));
     }
 
     String customCSSText() const;
 
     bool equals(const CSSFunctionValue&) const;
 
     CSSValueList* arguments() const { return m_args.get(); }
 
     void traceAfterDispatch(Visitor*);
 
 private:
-    explicit CSSFunctionValue(CSSParserFunction*);
     CSSFunctionValue(String, PassRefPtrWillBeRawPtr<CSSValueList>);
 
     String m_name;
     RefPtrWillBeMember<CSSValueList> m_args;
 };
 
 DEFINE_CSS_VALUE_TYPE_CASTS(CSSFunctionValue, isFunctionValue());
 
 } // namespace blink
 
 #endif