Standardize usage of virtual/override/final specifiers.

components/metrics/serialization/serialization_utils_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 "components/metrics/serialization/serialization_utils.h"
 
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "components/metrics/serialization/metric_sample.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace metrics {
 namespace {
 
 class SerializationUtilsTest : public testing::Test {
  protected:
   SerializationUtilsTest() {
     bool success = temporary_dir.CreateUniqueTempDir();
     if (success) {
       base::FilePath dir_path = temporary_dir.path();
       filename = dir_path.value() + "chromeossampletest";
       filepath = base::FilePath(filename);
     }
   }
 
-  virtual void SetUp() override {
-    base::DeleteFile(filepath, false);
-  }
+  void SetUp() override { base::DeleteFile(filepath, false); }
 
   void TestSerialization(MetricSample* sample) {
     std::string serialized(sample->ToString());
     ASSERT_EQ('\0', serialized[serialized.length() - 1]);
     scoped_ptr<MetricSample> deserialized =
         SerializationUtils::ParseSample(serialized);
     ASSERT_TRUE(deserialized);
     EXPECT_TRUE(sample->IsEqual(*deserialized.get()));
   }
 
@@ skipping 120 matching lines @@
   EXPECT_TRUE(shist->IsEqual(*vect[3]));
   EXPECT_TRUE(action->IsEqual(*vect[4]));
 
   int64 size = 0;
   ASSERT_TRUE(base::GetFileSize(filepath, &size));
   ASSERT_EQ(0, size);
 }
 
 }  // namespace
 }  // namespace metrics