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

Source/core/events/PageTransitionEvent.h

Index: Source/core/events/PageTransitionEvent.h
diff --git a/Source/core/events/PageTransitionEvent.h b/Source/core/events/PageTransitionEvent.h
index 9397bba98294b38372dd4d6b152884df56650fbd..fe0ed53f53431012633f28bfe61a79556e86f7a3 100644
--- a/Source/core/events/PageTransitionEvent.h
+++ b/Source/core/events/PageTransitionEvent.h
@@ -36,7 +36,7 @@ struct PageTransitionEventInit : public EventInit {
     bool persisted;
 };
 
-class PageTransitionEvent FINAL : public Event {
+class PageTransitionEvent final : public Event {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<PageTransitionEvent> create()
@@ -54,11 +54,11 @@ public:
 
     virtual ~PageTransitionEvent();
 
-    virtual const AtomicString& interfaceName() const OVERRIDE;
+    virtual const AtomicString& interfaceName() const override;
 
     bool persisted() const { return m_persisted; }
 
-    virtual void trace(Visitor*) OVERRIDE;
+    virtual void trace(Visitor*) override;
 
 private:
     PageTransitionEvent();