Fix virtual/override/final usage in Source/platform/.

Source/platform/text/LocaleMac.h

Index: Source/platform/text/LocaleMac.h
diff --git a/Source/platform/text/LocaleMac.h b/Source/platform/text/LocaleMac.h
index 0b233070a0d30ca10a77817b7c6269fa896725cf..8a8a5630e8cc236d85d42582e40c9194013e3fc0 100644
--- a/Source/platform/text/LocaleMac.h
+++ b/Source/platform/text/LocaleMac.h
@@ -49,27 +49,27 @@ public:
     static PassOwnPtr<LocaleMac> create(NSLocale*);
     ~LocaleMac();
 
-    virtual const Vector<String>& weekDayShortLabels() override;
-    virtual unsigned firstDayOfWeek() override;
-    virtual bool isRTL() override;
+    const Vector<String>& weekDayShortLabels() override;
+    unsigned firstDayOfWeek() override;
+    bool isRTL() override;
 
-    virtual String dateFormat() override;
-    virtual String monthFormat() override;
-    virtual String shortMonthFormat() override;
-    virtual String timeFormat() override;
-    virtual String shortTimeFormat() override;
-    virtual String dateTimeFormatWithSeconds() override;
-    virtual String dateTimeFormatWithoutSeconds() override;
-    virtual const Vector<String>& monthLabels() override;
-    virtual const Vector<String>& shortMonthLabels() override;
-    virtual const Vector<String>& standAloneMonthLabels() override;
-    virtual const Vector<String>& shortStandAloneMonthLabels() override;
-    virtual const Vector<String>& timeAMPMLabels() override;
+    String dateFormat() override;
+    String monthFormat() override;
+    String shortMonthFormat() override;
+    String timeFormat() override;
+    String shortTimeFormat() override;
+    String dateTimeFormatWithSeconds() override;
+    String dateTimeFormatWithoutSeconds() override;
+    const Vector<String>& monthLabels() override;
+    const Vector<String>& shortMonthLabels() override;
+    const Vector<String>& standAloneMonthLabels() override;
+    const Vector<String>& shortStandAloneMonthLabels() override;
+    const Vector<String>& timeAMPMLabels() override;
 
 private:
     explicit LocaleMac(NSLocale*);
     RetainPtr<NSDateFormatter> shortDateFormatter();
-    virtual void initializeLocaleData() override;
+    void initializeLocaleData() override;
 
     RetainPtr<NSLocale> m_locale;
     RetainPtr<NSCalendar> m_gregorianCalendar;