Use toCSSFooValue() generation macro for CSSInheritedValue, CSSVariableValue and CSSGridTemplateVal…

Source/core/css/CSSGridTemplateValue.h

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 38 matching lines @@
     size_t columnCount() const { return m_columnCount; }
 
 private:
     CSSGridTemplateValue(const NamedGridAreaMap&, size_t rowCount, size_t columnCount);
 
     NamedGridAreaMap m_gridAreaMap;
     size_t m_rowCount;
     size_t m_columnCount;
 };
 
-inline CSSGridTemplateValue* toCSSGridTemplateValue(CSSValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(value->isGridTemplateValue());
-    return static_cast<CSSGridTemplateValue*>(value);
-}
-
-inline const CSSGridTemplateValue* toCSSGridTemplateValue(const CSSValue* value)
-{
-    ASSERT_WITH_SECURITY_IMPLICATION(value->isGridTemplateValue());
-    return static_cast<const CSSGridTemplateValue*>(value);
-}
-
-// Catch unneeded cast.
-void toCSSGridTemplateValue(const CSSGridTemplateValue*);
+DEFINE_CSS_VALUE_TYPE_CASTS(GridTemplateValue);
 
 } // namespace WebCore
 
 #endif // CSSGridTemplateValue_h