Update {virtual,override,final} to follow C++11 style in chrome/browser/chromeos/drive.

chrome/browser/chromeos/drive/sync/entry_update_performer_unittest.cc

 // Copyright 2013 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 "chrome/browser/chromeos/drive/sync/entry_update_performer.h"
 
 #include "base/callback_helpers.h"
 #include "base/files/file_util.h"
 #include "base/md5.h"
 #include "base/task_runner_util.h"
 #include "chrome/browser/chromeos/drive/file_cache.h"
 #include "chrome/browser/chromeos/drive/file_system/download_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/operation_test_base.h"
 #include "chrome/browser/chromeos/drive/job_scheduler.h"
 #include "chrome/browser/chromeos/drive/resource_metadata.h"
 #include "chrome/browser/drive/drive_api_util.h"
 #include "chrome/browser/drive/fake_drive_service.h"
 #include "content/public/test/test_utils.h"
 #include "google_apis/drive/drive_api_parser.h"
 #include "google_apis/drive/test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace drive {
 namespace internal {
 
 class EntryUpdatePerformerTest : public file_system::OperationTestBase {
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     OperationTestBase::SetUp();
     performer_.reset(new EntryUpdatePerformer(blocking_task_runner(),
                                               delegate(),
                                               scheduler(),
                                               metadata(),
                                               cache(),
                                               loader_controller()));
   }
 
   // Stores |content| to the cache and mark it as dirty.
@@ skipping 550 matching lines @@
 
   // This should result in reverting the local change.
   ResourceEntry result_entry;
   EXPECT_EQ(FILE_ERROR_OK,
             GetLocalResourceEntryById(src_entry.local_id(), &result_entry));
   EXPECT_EQ(src_entry.title(), result_entry.title());
 }
 
 }  // namespace internal
 }  // namespace drive