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

Source/bindings/core/v8/V8AbstractEventListener.h

 /*
  * Copyright (C) 2006, 2007, 2008, 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 35 matching lines @@
 // There are two kinds of event listeners: HTML or non-HMTL. onload,
 // onfocus, etc (attributes) are always HTML event handler type; Event
 // listeners added by Window.addEventListener or
 // EventTargetNode::addEventListener are non-HTML type.
 //
 // Why does this matter?
 // WebKit does not allow duplicated HTML event handlers of the same type,
 // but ALLOWs duplicated non-HTML event handlers.
 class CORE_EXPORT V8AbstractEventListener : public EventListener {
 public:
-    virtual ~V8AbstractEventListener();
+    ~V8AbstractEventListener() override;
 
     static const V8AbstractEventListener* cast(const EventListener* listener)
     {
         return listener->type() == JSEventListenerType
             ? static_cast<const V8AbstractEventListener*>(listener)
             : 0;
     }
 
     static V8AbstractEventListener* cast(EventListener* listener)
     {
         return const_cast<V8AbstractEventListener*>(cast(const_cast<const EventListener*>(listener)));
     }
 
     // Implementation of EventListener interface.
 
-    virtual bool operator==(const EventListener& other) override { return this == &other; }
+    bool operator==(const EventListener& other) override { return this == &other; }
 
-    virtual void handleEvent(ExecutionContext*, Event*) override final;
+    void handleEvent(ExecutionContext*, Event*) final;
     virtual void handleEvent(ScriptState*, Event*);
 
     // Returns the listener object, either a function or an object.
     v8::Local<v8::Object> getListenerObject(ExecutionContext* executionContext)
     {
         // prepareListenerObject can potentially deref this event listener
         // as it may attempt to compile a function (lazy event listener), get an error
         // and invoke onerror callback which can execute arbitrary JS code.
         // Protect this event listener to keep it alive.
         RefPtr<V8AbstractEventListener> guard(this);
@@ skipping 16 matching lines @@
     bool hasExistingListenerObject()
     {
         return !m_listener.isEmpty();
     }
 
     void clearListenerObject()
     {
         m_listener.clear();
     }
 
-    virtual bool belongsToTheCurrentWorld() const override final;
+    bool belongsToTheCurrentWorld() const final;
     v8::Isolate* isolate() const { return m_isolate; }
     DOMWrapperWorld& world() const { return *m_world; }
 
 protected:
     V8AbstractEventListener(bool isAttribute, DOMWrapperWorld&, v8::Isolate*);
 
     virtual void prepareListenerObject(ExecutionContext*) { }
 
     void setListenerObject(v8::Local<v8::Object>);
 
     void invokeEventHandler(ScriptState*, Event*, v8::Local<v8::Value>);
 
     // Get the receiver object to use for event listener call.
     v8::Local<v8::Object> getReceiverObject(ScriptState*, Event*);
 
 private:
     // Implementation of EventListener function.
-    virtual bool virtualisAttribute() const override { return m_isAttribute; }
+    bool virtualisAttribute() const override { return m_isAttribute; }
 
     // This could return an empty handle and callers need to check return value.
     // We don't use v8::MaybeLocal because it can fail without exception.
     virtual v8::Local<v8::Value> callListenerFunction(ScriptState*, v8::Local<v8::Value> jsevent, Event*) = 0;
 
     virtual bool shouldPreventDefault(v8::Local<v8::Value> returnValue);
 
     static void setWeakCallback(const v8::WeakCallbackInfo<V8AbstractEventListener>&);
 
     ScopedPersistent<v8::Object> m_listener;
 
     // Indicates if this is an HTML type listener.
     bool m_isAttribute;
 
     RefPtr<DOMWrapperWorld> m_world;
     v8::Isolate* m_isolate;
 };
 
 } // namespace blink
 
 #endif // V8AbstractEventListener_h