replace 'virtual ... OVERRIDE' with '... override'

base/prefs/default_pref_store_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/prefs/default_pref_store.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::StringValue;
 using base::Value;
 
 namespace {
 
 class MockPrefStoreObserver : public PrefStore::Observer {
  public:
   explicit MockPrefStoreObserver(DefaultPrefStore* pref_store);
   virtual ~MockPrefStoreObserver();
 
   int change_count() {
     return change_count_;
   }
 
   // PrefStore::Observer implementation:
-  virtual void OnPrefValueChanged(const std::string& key) OVERRIDE;
-  virtual void OnInitializationCompleted(bool succeeded) OVERRIDE {}
+  void OnPrefValueChanged(const std::string& key) override;
+  void OnInitializationCompleted(bool succeeded) override {}
 
  private:
   DefaultPrefStore* pref_store_;
 
   int change_count_;
 
   DISALLOW_COPY_AND_ASSIGN(MockPrefStoreObserver);
 };
 
 MockPrefStoreObserver::MockPrefStoreObserver(DefaultPrefStore* pref_store)
@@ skipping 25 matching lines @@
   pref_store->ReplaceDefaultValue(kPrefKey,
                                   scoped_ptr<Value>(new StringValue("bar")));
   EXPECT_EQ(1, observer.change_count());
 
   // But only if the value actually changed.
   pref_store->ReplaceDefaultValue(kPrefKey,
                                   scoped_ptr<Value>(new StringValue("bar")));
   EXPECT_EQ(1, observer.change_count());
 }