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

Source/web/DateTimeChooserImpl.h

 /*
  * Copyright (C) 2012 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 26 matching lines @@
 
 namespace blink {
 
 class ChromeClientImpl;
 class DateTimeChooserClient;
 class PagePopup;
 
 class DateTimeChooserImpl final : public DateTimeChooser, public PagePopupClient {
 public:
     static PassRefPtr<DateTimeChooserImpl> create(ChromeClientImpl*, DateTimeChooserClient*, const DateTimeChooserParameters&);
-    virtual ~DateTimeChooserImpl();
+    ~DateTimeChooserImpl() override;
 
     // DateTimeChooser functions:
-    virtual void endChooser() override;
-    virtual AXObject* rootAXObject() override;
+    void endChooser() override;
+    AXObject* rootAXObject() override;
 
 private:
     DateTimeChooserImpl(ChromeClientImpl*, DateTimeChooserClient*, const DateTimeChooserParameters&);
     // PagePopupClient functions:
-    virtual IntSize contentSize() override;
-    virtual void writeDocument(SharedBuffer*) override;
-    virtual void selectFontsFromOwnerDocument(Document&) override { }
-    virtual Locale& locale() override;
-    virtual void setValueAndClosePopup(int, const String&) override;
-    virtual void setValue(const String&) override;
-    virtual void closePopup() override;
-    virtual Element& ownerElement() override;
-    virtual void didClosePopup() override;
+    IntSize contentSize() override;
+    void writeDocument(SharedBuffer*) override;
+    void selectFontsFromOwnerDocument(Document&) override { }
+    Locale& locale() override;
+    void setValueAndClosePopup(int, const String&) override;
+    void setValue(const String&) override;
+    void closePopup() override;
+    Element& ownerElement() override;
+    void didClosePopup() override;
 
     ChromeClientImpl* m_chromeClient;
     DateTimeChooserClient* m_client;
     PagePopup* m_popup;
     DateTimeChooserParameters m_parameters;
     OwnPtr<Locale> m_locale;
 };
 
 }
 
 #endif // ENABLE(INPUT_MULTIPLE_FIELDS_UI)
 
 #endif // DateTimeChooserImpl_h