Standardize usage of virtual/override/final specifiers in base/.

base/prefs/pref_value_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 <string>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_notifier.h"
@@ skipping 80 matching lines @@
 const char kSupervisedUserValue[] = "default:supervised_user";
 const char kExtensionValue[] = "default:extension";
 const char kCommandLineValue[] = "default:command_line";
 const char kUserValue[] = "default:user";
 const char kRecommendedValue[] = "default:recommended";
 const char kDefaultValue[] = "default:default";
 }
 
 class PrefValueStoreTest : public testing::Test {
  protected:
-  virtual void SetUp() {
+  void SetUp() override {
     // Create TestingPrefStores.
     CreateManagedPrefs();
     CreateSupervisedUserPrefs();
     CreateExtensionPrefs();
     CreateCommandLinePrefs();
     CreateUserPrefs();
     CreateRecommendedPrefs();
     CreateDefaultPrefs();
     sync_associator_.reset(new MockPrefModelAssociator());
 
@@ skipping 549 matching lines @@
       prefs::kCommandLinePref));
   EXPECT_TRUE(pref_value_store_->PrefValueExtensionModifiable(
       prefs::kUserPref));
   EXPECT_TRUE(pref_value_store_->PrefValueExtensionModifiable(
       prefs::kRecommendedPref));
   EXPECT_TRUE(pref_value_store_->PrefValueExtensionModifiable(
       prefs::kDefaultPref));
   EXPECT_TRUE(pref_value_store_->PrefValueExtensionModifiable(
       prefs::kMissingPref));
 }