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

Source/core/dom/ExecutionContextTask.h

 /*
  * Copyright (C) 2013 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.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 31 matching lines @@
     WTF_MAKE_FAST_ALLOCATED;
 public:
     ExecutionContextTask() { }
     virtual ~ExecutionContextTask() { }
     virtual void performTask(ExecutionContext*) = 0;
     // Certain tasks get marked specially so that they aren't discarded, and are executed, when the context is shutting down its message queue.
     virtual bool isCleanupTask() const { return false; }
     virtual String taskNameForInstrumentation() const { return String(); }
 };
 
-class CallClosureTask FINAL : public ExecutionContextTask {
+class CallClosureTask final : public ExecutionContextTask {
 public:
     // Do not use |create| other than in createCrossThreadTask and
     // createSameThreadTask.
     // See http://crbug.com/390851
     static PassOwnPtr<CallClosureTask> create(const Closure& closure)
     {
         return adoptPtr(new CallClosureTask(closure));
     }
-    virtual void performTask(ExecutionContext*) OVERRIDE { m_closure(); }
+    virtual void performTask(ExecutionContext*) override { m_closure(); }
 
 private:
     explicit CallClosureTask(const Closure& closure) : m_closure(closure) { }
     Closure m_closure;
 };
 
 // Create tasks passed within a single thread.
 // When posting tasks within a thread, use |createSameThreadTask| instead
 // of using |bind| directly to state explicitly that there is no need to care
 // about thread safety when posting the task.
 // When posting tasks across threads, use |createCrossThreadTask|.
 template<typename FunctionType, typename... P>
 PassOwnPtr<ExecutionContextTask> createSameThreadTask(
     FunctionType function, const P&... parameters)
 {
     return CallClosureTask::create(bind(function, parameters...));
 }
 
 } // namespace
 
 #endif