Update web classes to use OVERRIDE / FINAL when needed

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 WebCore {
 class PagePopup;
 class DateTimeChooserClient;
 }
 
 namespace blink {
 
 class ChromeClientImpl;
 
-class DateTimeChooserImpl : public WebCore::DateTimeChooser, public WebCore::PagePopupClient {
+class DateTimeChooserImpl FINAL : public WebCore::DateTimeChooser, public WebCore::PagePopupClient {
 public:
     static PassRefPtr<DateTimeChooserImpl> create(ChromeClientImpl*, WebCore::DateTimeChooserClient*, const WebCore::DateTimeChooserParameters&);
     virtual ~DateTimeChooserImpl();
 
     // DateTimeChooser functions:
     virtual void endChooser() OVERRIDE;
 
 private:
     DateTimeChooserImpl(ChromeClientImpl*, WebCore::DateTimeChooserClient*, const WebCore::DateTimeChooserParameters&);
     // PagePopupClient functions:
@@ skipping 10 matching lines @@
     WebCore::PagePopup* m_popup;
     WebCore::DateTimeChooserParameters m_parameters;
     OwnPtr<WebCore::Locale> m_locale;
 };
 
 }
 
 #endif // ENABLE(INPUT_MULTIPLE_FIELDS_UI)
 
 #endif // DateTimeChooserImpl_h