replace OVERRIDE and FINAL with override and final in base/

base/threading/watchdog_unittest.cc

Index: base/threading/watchdog_unittest.cc
diff --git a/base/threading/watchdog_unittest.cc b/base/threading/watchdog_unittest.cc
index 7a4be4c764ca72b1584b2bebac76d4bd71c874d4..2dbfdbdd5e128ae1bbbcbaba1f6c570eaf9c46c3 100644
--- a/base/threading/watchdog_unittest.cc
+++ b/base/threading/watchdog_unittest.cc
@@ -28,7 +28,7 @@ class WatchdogCounter : public Watchdog {
 
   virtual ~WatchdogCounter() {}
 
-  virtual void Alarm() OVERRIDE {
+  virtual void Alarm() override {
     alarm_counter_++;
     Watchdog::Alarm();
   }
@@ -43,7 +43,7 @@ class WatchdogCounter : public Watchdog {
 
 class WatchdogTest : public testing::Test {
  public:
-  virtual void SetUp() OVERRIDE {
+  virtual void SetUp() override {
     Watchdog::ResetStaticData();
   }
 };