Use FilePath::Extension instead of the deprecated file_util::GetFileExtensionFromPath.

chrome/test/mini_installer_test/mini_installer_test_util.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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/mini_installer_test_util.h"
 
+#include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/string_util.h"
 #include "base/test/test_timeouts.h"
 #include "base/threading/platform_thread.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/installer/util/logging_installer.h"
 #include "chrome/test/mini_installer_test/mini_installer_test_constants.h"
@@ skipping 121 matching lines @@
   if (file_handle == INVALID_HANDLE_VALUE) {
     VLOG(1) << "Handle is invalid.";
     return false;
   }
   BOOL ret = TRUE;
   bool return_val = false;
   while (ret) {
     std::wstring search_path = find_file_data.cFileName;
     size_t position_found = search_path.find(pattern);
     if (position_found != -1) {
-      std::wstring extension = file_util::GetFileExtensionFromPath(file_name);
-      if ((base::strcasecmp(WideToUTF8(extension).c_str(), "exe")) == 0) {
+      std::wstring extension = FilePath(file_name).Extension();
+      if ((base::strcasecmp(WideToUTF8(extension).c_str(), ".exe")) == 0) {
         file_details->push_back(FileInfo(find_file_data.cFileName, 0));
         return_val = true;
         break;
       } else {
         FILETIME file_time = find_file_data.ftCreationTime;
         base::Time creation_time = base::Time::FromFileTime(file_time);
         file_details->push_back(FileInfo(find_file_data.cFileName,
                                 static_cast<int>(creation_time.ToDoubleT())));
         return_val = true;
       }
@@ skipping 140 matching lines @@
   }
   return true;
 }
 
 bool MiniInstallerTestUtil::VerifyProcessHandleClosed(
     base::ProcessHandle handle) {
   DWORD result = WaitForSingleObject(handle,
       TestTimeouts::large_test_timeout_ms());
   return result == WAIT_OBJECT_0;
 }