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

chrome/browser/chromeos/drive/file_system/open_file_operation_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/file_system/open_file_operation.h"
 
 #include <map>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/task_runner_util.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/file_cache.h"
 #include "chrome/browser/chromeos/drive/file_change.h"
 #include "chrome/browser/chromeos/drive/file_errors.h"
 #include "chrome/browser/chromeos/drive/file_system/operation_test_base.h"
 #include "content/public/test/test_utils.h"
 #include "google_apis/drive/test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace drive {
 namespace file_system {
 
 class OpenFileOperationTest : public OperationTestBase {
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     OperationTestBase::SetUp();
 
     operation_.reset(new OpenFileOperation(
         blocking_task_runner(), delegate(), scheduler(), metadata(), cache(),
         temp_dir()));
   }
 
   scoped_ptr<OpenFileOperation> operation_;
 };
 
@@ skipping 210 matching lines @@
   EXPECT_TRUE(delegate()->updated_local_ids().empty());
 
   close_callback2.Run();
 
   // Here, all the clients close the file, so it should be uploaded then.
   EXPECT_EQ(1U, delegate()->updated_local_ids().count(src_entry.local_id()));
 }
 
 }  // namespace file_system
 }  // namespace drive