replace OVERRIDE and FINAL with override and final in base/

base/timer/mock_timer.h

Index: base/timer/mock_timer.h
diff --git a/base/timer/mock_timer.h b/base/timer/mock_timer.h
index 456cb5be90b65b4e37dc837d5940f018f442890b..c4aa92e918d0842cc0b6ab580507e8a311ec89ea 100644
--- a/base/timer/mock_timer.h
+++ b/base/timer/mock_timer.h
@@ -19,13 +19,13 @@ class BASE_EXPORT MockTimer : public Timer {
   virtual ~MockTimer();
 
   // base::Timer implementation.
-  virtual bool IsRunning() const OVERRIDE;
-  virtual base::TimeDelta GetCurrentDelay() const OVERRIDE;
+  virtual bool IsRunning() const override;
+  virtual base::TimeDelta GetCurrentDelay() const override;
   virtual void Start(const tracked_objects::Location& posted_from,
                      base::TimeDelta delay,
-                     const base::Closure& user_task) OVERRIDE;
-  virtual void Stop() OVERRIDE;
-  virtual void Reset() OVERRIDE;
+                     const base::Closure& user_task) override;
+  virtual void Stop() override;
+  virtual void Reset() override;
 
   // Testing methods.
   void Fire();