Update {virtual,override} to follow C++11 style in chrome.

chrome/common/safe_browsing/binary_feature_extractor_win_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 "chrome/common/safe_browsing/binary_feature_extractor.h"
 
 #include <string>
 #include <vector>
 
 #include "base/base_paths.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/path_service.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/safe_browsing/csd.pb.h"
 #include "net/cert/x509_cert_types.h"
 #include "net/cert/x509_certificate.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace safe_browsing {
 
 class BinaryFeatureExtractorWinTest : public testing::Test {
  protected:
-  virtual void SetUp() override {
+  void SetUp() override {
     base::FilePath source_path;
     ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &source_path));
     testdata_path_ = source_path
         .AppendASCII("safe_browsing")
         .AppendASCII("download_protection");
 
     binary_feature_extractor_ = new BinaryFeatureExtractor();
   }
 
   // Given a certificate chain protobuf, parse it into X509Certificates.
@@ skipping 163 matching lines @@
   ClientDownloadRequest_ImageHeaders image_headers;
   google::protobuf::RepeatedPtrField<std::string> signed_data;
   ASSERT_TRUE(binary_feature_extractor_->ExtractImageFeatures(
       testdata_path_.AppendASCII("wow_helper.exe"),
       BinaryFeatureExtractor::kDefaultOptions, &image_headers, &signed_data));
   ASSERT_EQ(1, signed_data.size());
   ASSERT_LT(0U, signed_data.Get(0).size());
 }
 
 }  // namespace safe_browsing