Clean up virtual functions in css/

Source/core/css/CSSKeyframeRule.h

 /*
  * Copyright (C) 2007, 2008, 2012 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 61 matching lines @@
     // These are both calculated lazily. Either one can be set, which invalidates the other.
     mutable String m_keyText;
     mutable OwnPtr<Vector<double> > m_keys;
 };
 
 class CSSKeyframeRule final : public CSSRule {
     DEFINE_WRAPPERTYPEINFO();
 public:
     virtual ~CSSKeyframeRule();
 
-    virtual CSSRule::Type type() const override { return KEYFRAME_RULE; }
     virtual String cssText() const override { return m_keyframe->cssText(); }
     virtual void reattach(StyleRuleBase*) override;
 
     String keyText() const { return m_keyframe->keyText(); }
     void setKeyText(const String& s) { m_keyframe->setKeyText(s); }
 
     CSSStyleDeclaration* style() const;
 
     virtual void trace(Visitor*) override;
 
 private:
     CSSKeyframeRule(StyleKeyframe*, CSSKeyframesRule* parent);
 
+    virtual CSSRule::Type type() const override { return KEYFRAME_RULE; }
+
     RefPtrWillBeMember<StyleKeyframe> m_keyframe;
     mutable RefPtrWillBeMember<StyleRuleCSSStyleDeclaration> m_propertiesCSSOMWrapper;
 
     friend class CSSKeyframesRule;
 };
 
 DEFINE_CSS_RULE_TYPE_CASTS(CSSKeyframeRule, KEYFRAME_RULE);
 
 } // namespace blink
 
 #endif // CSSKeyframeRule_h