Standardize usage of virtual/override/final specifiers.

chrome/browser/sync/test/integration/multiple_client_preferences_sync_test.cc

 // Copyright (c) 2011 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/strings/stringprintf.h"
 #include "base/values.h"
 #include "chrome/browser/sync/test/integration/preferences_helper.h"
 #include "chrome/browser/sync/test/integration/sync_test.h"
 #include "chrome/common/pref_names.h"
 
 using preferences_helper::ChangeListPref;
 using preferences_helper::AwaitListPrefMatches;
 
 class MultipleClientPreferencesSyncTest : public SyncTest {
  public:
   MultipleClientPreferencesSyncTest() : SyncTest(MULTIPLE_CLIENT) {}
-  virtual ~MultipleClientPreferencesSyncTest() {}
+  ~MultipleClientPreferencesSyncTest() override {}
 
   bool TestUsesSelfNotifications() override { return false; }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MultipleClientPreferencesSyncTest);
 };
 
 IN_PROC_BROWSER_TEST_F(MultipleClientPreferencesSyncTest, Sanity) {
   ASSERT_TRUE(SetupSync()) << "SetupSync() failed.";
   DisableVerifier();
 
   for (int i = 0; i < num_clients(); ++i) {
     base::ListValue urls;
     urls.Append(new base::StringValue(
         base::StringPrintf("http://www.google.com/%d", i)));
     ChangeListPref(i, prefs::kURLsToRestoreOnStartup, urls);
   }
 
   ASSERT_TRUE(AwaitListPrefMatches(prefs::kURLsToRestoreOnStartup));
 }