replace OVERRIDE and FINAL with override and final in base/

base/threading/sequenced_worker_pool.cc

Index: base/threading/sequenced_worker_pool.cc
diff --git a/base/threading/sequenced_worker_pool.cc b/base/threading/sequenced_worker_pool.cc
index 38b299847b1add386cc537733e4f55752ce9b3d9..5304f37cee39acd4633a6708d471a7d804317026 100644
--- a/base/threading/sequenced_worker_pool.cc
+++ b/base/threading/sequenced_worker_pool.cc
@@ -100,8 +100,8 @@ class SequencedWorkerPoolTaskRunner : public TaskRunner {
   // TaskRunner implementation
   virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
                                const Closure& task,
-                               TimeDelta delay) OVERRIDE;
-  virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
+                               TimeDelta delay) override;
+  virtual bool RunsTasksOnCurrentThread() const override;
 
  private:
   virtual ~SequencedWorkerPoolTaskRunner();
@@ -153,14 +153,14 @@ class SequencedWorkerPoolSequencedTaskRunner : public SequencedTaskRunner {
   // TaskRunner implementation
   virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
                                const Closure& task,
-                               TimeDelta delay) OVERRIDE;
-  virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
+                               TimeDelta delay) override;
+  virtual bool RunsTasksOnCurrentThread() const override;
 
   // SequencedTaskRunner implementation
   virtual bool PostNonNestableDelayedTask(
       const tracked_objects::Location& from_here,
       const Closure& task,
-      TimeDelta delay) OVERRIDE;
+      TimeDelta delay) override;
 
  private:
   virtual ~SequencedWorkerPoolSequencedTaskRunner();
@@ -238,7 +238,7 @@ class SequencedWorkerPool::Worker : public SimpleThread {
   virtual ~Worker();
 
   // SimpleThread implementation. This actually runs the background thread.
-  virtual void Run() OVERRIDE;
+  virtual void Run() override;
 
   void set_running_task_info(SequenceToken token,
                              WorkerShutdown shutdown_behavior) {