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

Source/web/EditorClientImpl.h

 /*
  * Copyright (C) 2009 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 24 matching lines @@
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class LocalFrame;
 class WebViewImpl;
 
 class EditorClientImpl final : public EditorClient {
 public:
     explicit EditorClientImpl(WebViewImpl*);
-    virtual ~EditorClientImpl();
+    ~EditorClientImpl() override;
 
-    virtual void respondToChangedContents() override;
-    virtual void respondToChangedSelection(LocalFrame*, SelectionType) override;
-    virtual bool canCopyCut(LocalFrame*, bool defaultValue) const override;
-    virtual bool canPaste(LocalFrame*, bool defaultValue) const override;
-    virtual bool handleKeyboardEvent() override;
+    void respondToChangedContents() override;
+    void respondToChangedSelection(LocalFrame*, SelectionType) override;
+    bool canCopyCut(LocalFrame*, bool defaultValue) const override;
+    bool canPaste(LocalFrame*, bool defaultValue) const override;
+    bool handleKeyboardEvent() override;
 
 private:
     WebViewImpl* m_webView;
 };
 
 } // namespace blink
 
 #endif