Standardize usage of virtual/override/final specifiers.

components/search_engines/default_search_manager_unittest.cc

 // Copyright 2014 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/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
@@ skipping 123 matching lines @@
   data->last_modified = base::Time();
   return data.Pass();
 }
 
 }  // namespace
 
 class DefaultSearchManagerTest : public testing::Test {
  public:
   DefaultSearchManagerTest() {};
 
-  virtual void SetUp() override {
+  void SetUp() override {
     pref_service_.reset(new user_prefs::TestingPrefServiceSyncable);
     DefaultSearchManager::RegisterProfilePrefs(pref_service_->registry());
     TemplateURLPrepopulateData::RegisterProfilePrefs(pref_service_->registry());
   }
 
   user_prefs::TestingPrefServiceSyncable* pref_service() {
     return pref_service_.get();
   }
 
  private:
@@ skipping 160 matching lines @@
 
   ExpectSimilar(extension_data_3.get(),
                 manager.GetDefaultSearchEngine(&source));
   EXPECT_EQ(DefaultSearchManager::FROM_EXTENSION, source);
 
   manager.ClearExtensionControlledDefaultSearchEngine();
 
   ExpectSimilar(data.get(), manager.GetDefaultSearchEngine(&source));
   EXPECT_EQ(DefaultSearchManager::FROM_USER, source);
 }