DEFINE_CSS_VALUE_TYPE_CASTS starts to use DEFINE_TYPE_CASTS

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 41 matching lines @@
     CSSValueList* arguments() const { return m_args.get(); }
 
 private:
     explicit CSSFunctionValue(CSSParserFunction*);
     CSSFunctionValue(String, PassRefPtr<CSSValueList>);
 
     String m_name;
     RefPtr<CSSValueList> m_args;
 };
 
-DEFINE_CSS_VALUE_TYPE_CASTS(FunctionValue);
+DEFINE_CSS_VALUE_TYPE_CASTS(CSSFunctionValue, isFunctionValue());
 
 } // namespace WebCore
 
 #endif