Standardize usage of virtual/override/final specifiers.

chrome/browser/safe_browsing/download_feedback_service_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/safe_browsing/download_feedback_service.h"
 
 #include <vector>
 
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 119 matching lines @@
  public:
   DownloadFeedbackServiceTest()
       : file_task_runner_(content::BrowserThread::GetMessageLoopProxyForThread(
             content::BrowserThread::FILE)),
         io_task_runner_(content::BrowserThread::GetMessageLoopProxyForThread(
             content::BrowserThread::IO)),
         request_context_getter_(
             new net::TestURLRequestContextGetter(io_task_runner_)) {
   }
 
-  virtual void SetUp() override {
+  void SetUp() override {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     DownloadFeedback::RegisterFactory(&download_feedback_factory_);
   }
 
-  virtual void TearDown() override {
-    DownloadFeedback::RegisterFactory(NULL);
-  }
+  void TearDown() override { DownloadFeedback::RegisterFactory(NULL); }
 
   base::FilePath CreateTestFile(int n) const {
     base::FilePath upload_file_path(
         temp_dir_.path().AppendASCII("test file " + base::IntToString(n)));
     const std::string upload_file_data = "data";
     int wrote = base::WriteFile(
         upload_file_path, upload_file_data.data(), upload_file_data.size());
     EXPECT_EQ(static_cast<int>(upload_file_data.size()), wrote);
     return upload_file_path;
   }
@@ skipping 206 matching lines @@
   // was deleted.
   EXPECT_FALSE(base::PathExists(file_path[2]));
 
   // These files should still exist since the FakeDownloadFeedback does not
   // delete them.
   EXPECT_TRUE(base::PathExists(file_path[0]));
   EXPECT_TRUE(base::PathExists(file_path[1]));
 }
 
 }  // namespace safe_browsing