Update installer to use the new version of LaunchProcess.

chrome/installer/util/google_update_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/installer/util/google_update_util.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
@@ skipping 165 matching lines @@
     cmd.AppendSwitch(installer::switches::kVerboseLogging);
   }
 
   base::LaunchOptions launch_options;
   launch_options.force_breakaway_from_job_ = true;
 
   if (base::win::GetVersion() >= base::win::VERSION_VISTA &&
       base::win::UserAccountControlIsEnabled()) {
     base::LaunchElevatedProcess(cmd, launch_options);
   } else {
-    base::LaunchProcess(cmd, launch_options, NULL);
+    base::LaunchProcess(cmd, launch_options);
   }
 }
 
 }  // namespace google_update