[Fixit Dec-2012] Refactor first_run, very few things should depend on whether the First Run senti...

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 <windows.h>
 #include <msi.h>
 #include <shellapi.h>
 #include <shlobj.h>
 
 #include "base/at_exit.h"
@@ skipping 570 matching lines @@
           if (install_path.empty()) {
             // Give up if we failed to construct the install path.
             *status = installer::OS_ERROR;
             installer_state->WriteInstallerResult(*status,
                                                   IDS_INSTALL_OS_ERROR_BASE,
                                                   NULL);
           } else {
             *status = installer::EXISTING_VERSION_LAUNCHED;
             FilePath chrome_exe = install_path.Append(installer::kChromeExe);
             CommandLine cmd(chrome_exe);
-            cmd.AppendSwitch(switches::kFirstRun);
+            cmd.AppendSwitch(switches::kForceFirstRun);
             installer_state->WriteInstallerResult(*status, 0, NULL);
             VLOG(1) << "Launching existing system-level chrome instead.";
             base::LaunchProcess(cmd, base::LaunchOptions(), NULL);
           }
         } else {
           // Display an error message for other products.
           *status = installer::SYSTEM_LEVEL_INSTALL_EXISTS;
           installer_state->WriteInstallerResult(
               *status, IDS_INSTALL_SYSTEM_LEVEL_EXISTS_BASE, NULL);
         }
@@ skipping 1065 matching lines @@
   if (!(installer_state.is_msi() && is_uninstall))
     // 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;
 }