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

chrome/test/mini_installer_test/mini_installer_test_util.cc

Index: chrome/test/mini_installer_test/mini_installer_test_util.cc
diff --git a/chrome/test/mini_installer_test/mini_installer_test_util.cc b/chrome/test/mini_installer_test/mini_installer_test_util.cc
index 1fb022740cdcc008aee7d3550aeb185746c1d659..a07ada566e7b7df5cff0b7889c4d5b70d046a954 100644
--- a/chrome/test/mini_installer_test/mini_installer_test_util.cc
+++ b/chrome/test/mini_installer_test/mini_installer_test_util.cc
@@ -90,7 +90,7 @@ std::wstring MiniInstallerTestUtil::GetFilePath(const wchar_t* exe_name) {
   PathService::Get(base::DIR_EXE, &installer_path);
   installer_path = installer_path.Append(exe_name);
   VLOG(1) << "Chrome exe path: " << installer_path.value().c_str();
-  return installer_path.ToWStringHack();
+  return installer_path.value();
 }
 
 // This method will first call GetLatestFile to get the list of all
@@ -168,9 +168,9 @@ bool MiniInstallerTestUtil::GetLatestFile(const wchar_t* file_name,
 // This method retrieves the previous build version for the given diff
 // installer path.
 bool MiniInstallerTestUtil::GetPreviousBuildNumber(const std::wstring& path,
-    std::wstring *build_number) {
+                                                   std::wstring *build_number) {
 
-  std::wstring diff_name = file_util::GetFilenameFromPath(path);
+  std::wstring diff_name = FilePath(path).BaseName().value();
   // We want to remove 'from_', so add its length to found index (which is 5)
   std::wstring::size_type start_position = diff_name.find(L"from_") + 5;
   std::wstring::size_type end_position = diff_name.find(L"_c");
@@ -188,7 +188,7 @@ bool MiniInstallerTestUtil::GetPreviousBuildNumber(const std::wstring& path,
   if (folder.empty())
     return false;
 
-  build_number->assign(folder.BaseName().ToWStringHack());
+  build_number->assign(folder.BaseName().value());
   return true;
 }