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

chrome/browser/chromeos/drive/change_list_processor_unittest.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 "chrome/browser/chromeos/drive/change_list_processor.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
@@ skipping 77 matching lines @@
   file.set_resource_id("1_orphanfile_resource_id");
   change_lists[0]->mutable_entries()->push_back(file);
   change_lists[0]->mutable_parent_resource_ids()->push_back("");
 
   change_lists[0]->set_largest_changestamp(kBaseResourceListChangestamp);
   return change_lists.Pass();
 }
 
 class ChangeListProcessorTest : public testing::Test {
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
 
     metadata_storage_.reset(new ResourceMetadataStorage(
         temp_dir_.path(), base::MessageLoopProxy::current().get()));
     ASSERT_TRUE(metadata_storage_->Initialize());
 
     fake_free_disk_space_getter_.reset(new FakeFreeDiskSpaceGetter);
     cache_.reset(new FileCache(metadata_storage_.get(),
                                temp_dir_.path(),
                                base::MessageLoopProxy::current().get(),
@@ skipping 531 matching lines @@
             ApplyChangeList(change_lists.Pass(), &changed_files));
 
   // The change is rejected due to the old modification date.
   ResourceEntry entry;
   EXPECT_EQ(FILE_ERROR_OK, metadata_->GetResourceEntryById(local_id, &entry));
   EXPECT_EQ(new_file_local.title(), entry.title());
 }
 
 }  // namespace internal
 }  // namespace drive