Use FilePath::BaseName instead of the deprecated file_util::GetFilenameFromPath. Part 3.

chrome/test/mini_installer_test/chrome_mini_installer.cc

 // Copyright (c) 2010 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/test/mini_installer_test/chrome_mini_installer.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/platform_thread.h"
@@ skipping 112 matching lines @@
 // This method will get the latest full installer from nightly location
 // and installs it.
 void ChromeMiniInstaller::InstallFullInstaller(bool over_install) {
   ASSERT_TRUE(has_full_installer_);
   InstallMiniInstaller(over_install, full_installer_);
 }
 
 // Installs the Chrome mini-installer, checks the registry and shortcuts.
 void ChromeMiniInstaller::InstallMiniInstaller(bool over_install,
                                                const std::wstring& path) {
-  std::wstring exe_name = file_util::GetFilenameFromPath(path);
   printf("\nChrome will be installed at %ls level\n", install_type_.c_str());
   printf("\nWill proceed with the test only if this path exists: %ls\n\n",
          path.c_str());
-  ASSERT_TRUE(file_util::PathExists(FilePath(path))) << path
-                                                     << " does not exist.";
-  LaunchInstaller(path, exe_name.c_str());
+
+  FilePath exe_path(path);
+  ASSERT_TRUE(file_util::PathExists(exe_path)) << path << " does not exist.";
+  LaunchInstaller(path, exe_path.BaseName().value().c_str());
   BrowserDistribution* dist = BrowserDistribution::GetDistribution();
   ASSERT_TRUE(CheckRegistryKey(dist->GetVersionKey())) << dist->GetVersionKey()
                                                        << " does not exist.";
   VerifyInstall(over_install);
 }
 
 // This method tests the standalone installer by verifying the steps listed at:
 // https://sites.google.com/a/google.com/chrome-pmo/
 // standalone-installers/testing-standalone-installers
 // This method applies appropriate tags to standalone installer and deletes
@@ skipping 526 matching lines @@
 // This method will verify if the installed build is correct.
 bool ChromeMiniInstaller::VerifyStandaloneInstall() {
   std::wstring reg_key_value_returned, standalone_installer_version;
   MiniInstallerTestUtil::GetStandaloneVersion(&standalone_installer_version);
   GetChromeVersionFromRegistry(&reg_key_value_returned);
   if (standalone_installer_version.compare(reg_key_value_returned) == 0)
     return true;
   else
     return false;
 }