Rename Blink constants generated from IDL files.

third_party/WebKit/Source/core/css/CSSMediaRule.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2002, 2006, 2008, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 32 matching lines @@
     void reattach(StyleRuleBase*) override;
     String cssText() const override;
 
     MediaList* media() const;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     CSSMediaRule(StyleRuleMedia*, CSSStyleSheet*);
 
-    CSSRule::Type type() const override { return MEDIA_RULE; }
+    CSSRule::Type type() const override { return kMediaRule; }
 
     MediaQuerySet* mediaQueries() const;
 
     mutable Member<MediaList> m_mediaCSSOMWrapper;
 };
 
-DEFINE_CSS_RULE_TYPE_CASTS(CSSMediaRule, MEDIA_RULE);
+DEFINE_CSS_RULE_TYPE_CASTS(CSSMediaRule, kMediaRule);
 
 } // namespace blink
 
 #endif // CSSMediaRule_h