Replace FINAL and OVERRIDE with their C++11 counterparts in Source/core/events

Source/core/events/CustomEvent.h

Index: Source/core/events/CustomEvent.h
diff --git a/Source/core/events/CustomEvent.h b/Source/core/events/CustomEvent.h
index ece5719ac247811ba5f95a9fe96be7ed15004cc8..4ef505e151ca66441b44d6ed5cd55cc5ce1739a0 100644
--- a/Source/core/events/CustomEvent.h
+++ b/Source/core/events/CustomEvent.h
@@ -34,7 +34,7 @@ class SerializedScriptValue;
 
 typedef EventInit CustomEventInit;
 
-class CustomEvent FINAL : public Event {
+class CustomEvent final : public Event {
     DEFINE_WRAPPERTYPEINFO();
 public:
     virtual ~CustomEvent();
@@ -51,7 +51,7 @@ public:
 
     void initCustomEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<SerializedScriptValue>);
 
-    virtual const AtomicString& interfaceName() const OVERRIDE;
+    virtual const AtomicString& interfaceName() const override;
 
     SerializedScriptValue* serializedDetail() { return m_serializedDetail.get(); }
 
@@ -61,7 +61,7 @@ public:
         m_serializedDetail = detail;
     }
 
-    virtual void trace(Visitor*) OVERRIDE;
+    virtual void trace(Visitor*) override;
 
 private:
     CustomEvent();