Clean up virtual functions in css/

Source/core/css/CSSFontFaceRule.h

Index: Source/core/css/CSSFontFaceRule.h
diff --git a/Source/core/css/CSSFontFaceRule.h b/Source/core/css/CSSFontFaceRule.h
index 603669822b1ed37ea88eb9756c66eee497cfbea7..10f7622b811d93438787f47d8a8ce6c388d5d927 100644
--- a/Source/core/css/CSSFontFaceRule.h
+++ b/Source/core/css/CSSFontFaceRule.h
@@ -41,7 +41,6 @@ public:
 
     virtual ~CSSFontFaceRule();
 
-    virtual CSSRule::Type type() const override { return FONT_FACE_RULE; }
     virtual String cssText() const override;
     virtual void reattach(StyleRuleBase*) override;
 
@@ -54,6 +53,8 @@ public:
 private:
     CSSFontFaceRule(StyleRuleFontFace*, CSSStyleSheet* parent);
 
+    virtual CSSRule::Type type() const override { return FONT_FACE_RULE; }
+
     RefPtrWillBeMember<StyleRuleFontFace> m_fontFaceRule;
     mutable RefPtrWillBeMember<StyleRuleCSSStyleDeclaration> m_propertiesCSSOMWrapper;
 };