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

chrome/browser/media_galleries/fileapi/iapps_finder_impl_win_browsertest.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 "base/base64.h"
 #include "base/base_paths_win.h"
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
@@ skipping 19 matching lines @@
 }
 
 void TouchFile(const base::FilePath& file) {
   ASSERT_EQ(1, base::WriteFile(file, " ", 1));
 }
 
 class ITunesFinderWinTest : public InProcessBrowserTest {
  public:
   ITunesFinderWinTest() : test_finder_callback_called_(false) {}
 
-  virtual ~ITunesFinderWinTest() {}
+  ~ITunesFinderWinTest() override {}
 
-  virtual void SetUp() override {
+  void SetUp() override {
     ASSERT_TRUE(app_data_dir_.CreateUniqueTempDir());
     ASSERT_TRUE(music_dir_.CreateUniqueTempDir());
     app_data_dir_override_.reset(
         new base::ScopedPathOverride(base::DIR_APP_DATA, app_data_dir()));
     music_dir_override_.reset(
         new base::ScopedPathOverride(chrome::DIR_USER_MUSIC, music_dir()));
     InProcessBrowserTest::SetUp();
   }
 
   const base::FilePath& app_data_dir() {
@@ skipping 132 matching lines @@
       "</plist>", EncodePath(library_xml).c_str());
   WritePrefFile(xml);
   TestFindITunesLibrary();
   EXPECT_TRUE(test_finder_callback_called());
   EXPECT_TRUE(EmptyResult());
 }
 
 }  // namespace
 
 }  // namespace iapps