Standardize usage of virtual/override/final specifiers.

chrome/browser/sync/test/integration/two_client_preferences_sync_test.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/pref_service.h"
 #include "chrome/browser/sync/test/integration/preferences_helper.h"
 #include "chrome/browser/sync/test/integration/profile_sync_service_harness.h"
 #include "chrome/browser/sync/test/integration/sync_integration_test_util.h"
 #include "chrome/browser/sync/test/integration/sync_test.h"
 #include "chrome/common/pref_names.h"
 
 using preferences_helper::AwaitBooleanPrefMatches;
 using preferences_helper::AwaitIntegerPrefMatches;
 using preferences_helper::AwaitListPrefMatches;
 using preferences_helper::AwaitStringPrefMatches;
 using preferences_helper::BooleanPrefMatches;
 using preferences_helper::ChangeBooleanPref;
 using preferences_helper::ChangeIntegerPref;
 using preferences_helper::ChangeListPref;
 using preferences_helper::ChangeStringPref;
 using preferences_helper::GetPrefs;
 
 class TwoClientPreferencesSyncTest : public SyncTest {
  public:
   TwoClientPreferencesSyncTest() : SyncTest(TWO_CLIENT) {}
-  virtual ~TwoClientPreferencesSyncTest() {}
+  ~TwoClientPreferencesSyncTest() override {}
 
   bool TestUsesSelfNotifications() override { return false; }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TwoClientPreferencesSyncTest);
 };
 
 IN_PROC_BROWSER_TEST_F(TwoClientPreferencesSyncTest, BooleanPref) {
   ASSERT_TRUE(SetupSync());
   ASSERT_TRUE(AwaitBooleanPrefMatches(prefs::kHomePageIsNewTabPage));
@@ skipping 109 matching lines @@
 
   ChangeBooleanPref(0, prefs::kHomePageIsNewTabPage);
   ASSERT_TRUE(EnableEncryption(0));
   ASSERT_TRUE(EnableEncryption(1));
   ASSERT_TRUE(AwaitBooleanPrefMatches(prefs::kHomePageIsNewTabPage));
 
   ASSERT_TRUE(AwaitBooleanPrefMatches(prefs::kShowHomeButton));
   ChangeBooleanPref(0, prefs::kShowHomeButton);
   ASSERT_TRUE(AwaitBooleanPrefMatches(prefs::kShowHomeButton));
 }