Switch to TimeDelta interfaces in chrome automation test infrastructure.

chrome/test/mini_installer_test/installer_test_util.cc

 // Copyright (c) 2012 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/installer_test_util.h"
 
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/process.h"
 #include "base/process_util.h"
@@ skipping 273 matching lines @@
     LOG(ERROR) << "Command executable does not exist: "
                << command.GetProgram().MaybeAsASCII();
     return false;
   }
   base::ProcessHandle process;
   if (!base::LaunchProcess(command, base::LaunchOptions(), &process)) {
     LOG(ERROR) << "Failed to launch command: "
                << command.GetCommandLineString();
     return false;
   }
-  if (!base::WaitForSingleProcess(process, 60 * 1000)) {
+  if (!base::WaitForSingleProcess(process, base::TimeDelta::FromMinutes(1))) {
     LOG(ERROR) << "Launched process did not complete.";
     return false;
   }
   return true;
 }
 
 }  // namespace