Add a new flag to the installer to prevent registering for a Google Update la...

chrome/installer/setup/setup_main.cc

 // Copyright (c) 2009 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 <string>
 #include <windows.h>
 #include <msi.h>
 #include <shlobj.h>
 
 #include "base/at_exit.h"
@@ skipping 252 matching lines @@
             // If we failed to construct install path, it means the OS call to
             // get %ProgramFiles% or %AppData% failed. Report this as failure.
             install_msg_base = IDS_INSTALL_OS_ERROR_BASE;
             install_status = installer_util::OS_ERROR;
           } else {
             file_util::AppendToPath(&chrome_exe, installer_util::kChromeExe);
             chrome_exe = L"\"" + chrome_exe + L"\"";
             install_msg_base = 0;
           }
         }
+
+        bool write_chrome_launch_string =
+            !installer_util::GetDistroBooleanPreference(prefs,
+            installer_util::master_preferences::kDoNotRegisterForUpdateLaunch);
+
         InstallUtil::WriteInstallerResult(system_level, install_status,
-                                          install_msg_base, &chrome_exe);
+            install_msg_base, write_chrome_launch_string ? &chrome_exe : NULL);
+
         if (install_status == installer_util::FIRST_INSTALL_SUCCESS) {
           LOG(INFO) << "First install successful.";
           // We never want to launch Chrome in system level install mode.
           if (!system_level && !installer_util::GetDistroBooleanPreference(prefs,
               installer_util::master_preferences::kDoNotLaunchChrome))
             installer::LaunchChrome(system_level);
         }
       }
     }
     // There might be an experiment (for upgrade usually) that needs to happen.
@@ skipping 253 matching lines @@
   } else {
     install_status = InstallChrome(parsed_command_line,
                                    installed_version.get(),
                                    prefs.get());
   }
 
   CoUninitialize();
   BrowserDistribution* dist = BrowserDistribution::GetDistribution();
   return dist->GetInstallReturnCode(install_status);
 }