Standardize usage of virtual/override/final specifiers.

content/browser/fileapi/native_file_util_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 <set>
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "storage/browser/fileapi/native_file_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using storage::FileSystemFileUtil;
 using storage::FileSystemOperation;
 using storage::NativeFileUtil;
 
 namespace content {
 
 class NativeFileUtilTest : public testing::Test {
  public:
   NativeFileUtilTest() {}
 
-  virtual void SetUp() {
-    ASSERT_TRUE(data_dir_.CreateUniqueTempDir());
-  }
+  void SetUp() override { ASSERT_TRUE(data_dir_.CreateUniqueTempDir()); }
 
  protected:
   base::FilePath Path() {
     return data_dir_.path();
   }
 
   base::FilePath Path(const char* file_name) {
     return data_dir_.path().AppendASCII(file_name);
   }
 
@@ skipping 363 matching lines @@
                 FileSystemOperation::OPTION_PRESERVE_LAST_MODIFIED,
                 NativeFileUtil::MOVE));
 
   ASSERT_TRUE(FileExists(to_file3));
   ASSERT_EQ(base::File::FILE_OK,
             NativeFileUtil::GetFileInfo(to_file2, &file_info2));
   EXPECT_EQ(file_info1.last_modified, file_info2.last_modified);
 }
 
 }  // namespace content