Update installer to use the new version of LaunchProcess.

chrome/installer/setup/setup_main.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/setup/setup_main.h"
 
 #include <windows.h>
 #include <msi.h>
 #include <shellapi.h>
 #include <shlobj.h>
@@ skipping 569 matching lines @@
                                                   IDS_INSTALL_OS_ERROR_BASE,
                                                   NULL);
           } else {
             *status = installer::EXISTING_VERSION_LAUNCHED;
             base::FilePath chrome_exe =
                 install_path.Append(installer::kChromeExe);
             CommandLine cmd(chrome_exe);
             cmd.AppendSwitch(switches::kForceFirstRun);
             installer_state->WriteInstallerResult(*status, 0, NULL);
             VLOG(1) << "Launching existing system-level chrome instead.";
-            base::LaunchProcess(cmd, base::LaunchOptions(), NULL);
+            base::LaunchProcess(cmd, base::LaunchOptions());
           }
         } else {
           // It's no longer possible for |product| to be anything other than
           // Chrome.
           NOTREACHED();
         }
         return false;
       }
     }
 
@@ skipping 121 matching lines @@
   // delete them.
   installer::DeleteChromeDirectoriesIfEmpty(installer_state.target_path());
 
   // Trigger Active Setup if it was requested for the chrome product. This needs
   // to be done after the UninstallProduct calls as some of them might
   // otherwise terminate the process launched by TriggerActiveSetupCommand().
   if (chrome && cmd_line.HasSwitch(installer::switches::kTriggerActiveSetup))
     InstallUtil::TriggerActiveSetupCommand();
 
   if (!system_level_cmd.GetProgram().empty())
-    base::LaunchProcess(system_level_cmd, base::LaunchOptions(), NULL);
+    base::LaunchProcess(system_level_cmd, base::LaunchOptions());
 
   // Tell Google Update that an uninstall has taken place.
   // Ignore the return value: success or failure of Google Update
   // has no bearing on the success or failure of Chrome's uninstallation.
   google_update::UninstallGoogleUpdate(installer_state.system_install());
 
   return install_status;
 }
 
 // Uninstall the binaries if they are the only product present and they're not
@@ skipping 1076 matching lines @@
     // Note that we allow the status installer::UNINSTALL_REQUIRES_REBOOT
     // to pass through, since this is only returned on uninstall which is
     // never invoked directly by Google Update.
     return_code = InstallUtil::GetInstallReturnCode(install_status);
   }
 
   VLOG(1) << "Installation complete, returning: " << return_code;
 
   return return_code;
 }