Update remaining core classes to use OVERRIDE / FINAL when needed

Source/core/timing/PerformanceMeasure.h

 /*
  * Copyright (C) 2012 Intel 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #ifndef PerformanceMeasure_h
 #define PerformanceMeasure_h
 
 #include "core/timing/PerformanceEntry.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
-class PerformanceMeasure : public PerformanceEntry {
+class PerformanceMeasure FINAL : public PerformanceEntry {
 public:
     static PassRefPtr<PerformanceMeasure> create(const String& name, double startTime, double endTime) { return adoptRef(new PerformanceMeasure(name, startTime, endTime)); }
 
-    virtual bool isMeasure() { return true; }
+    virtual bool isMeasure() OVERRIDE { return true; }
 
 private:
     PerformanceMeasure(const String& name, double startTime, double endTime) : PerformanceEntry(name, "measure", startTime, endTime)
     {
         ScriptWrappable::init(this);
     }
-    ~PerformanceMeasure() { }
+    virtual ~PerformanceMeasure() { }
 };
 
 }
 
 #endif // !defined(PerformanceMeasure_h)