Add virtual and OVERRIDE to base/ implementation files

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 51e49df5d9ea62b6fb8a70924176e3784ebd5abf..0afccd64b02234cecacc8b1922894c15e4aaf8be 100644
--- a/base/threading/watchdog_unittest.cc
+++ b/base/threading/watchdog_unittest.cc
@@ -22,12 +22,13 @@ class WatchdogCounter : public Watchdog {
   WatchdogCounter(const TimeDelta& duration,
                   const std::string& thread_watched_name,
                   bool enabled)
-      : Watchdog(duration, thread_watched_name, enabled), alarm_counter_(0) {
+      : Watchdog(duration, thread_watched_name, enabled),
+        alarm_counter_(0) {
   }
 
   virtual ~WatchdogCounter() {}
 
-  virtual void Alarm() {
+  virtual void Alarm() OVERRIDE {
     alarm_counter_++;
     Watchdog::Alarm();
   }
@@ -42,7 +43,7 @@ class WatchdogCounter : public Watchdog {
 
 class WatchdogTest : public testing::Test {
  public:
-  void SetUp() {
+  virtual void SetUp() OVERRIDE {
     Watchdog::ResetStaticData();
   }
 };