[Fixit-Dec-2012] Auto-launch system-level Chrome post user-level Chrome self-destruction.

chrome/browser/chrome_browser_main_win.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/browser/chrome_browser_main_win.h"
 
 #include <windows.h>
 #include <shellapi.h>
 
 #include <algorithm>
@@ skipping 340 matching lines @@
         // system-level Chrome instead.
         const string16 text =
             l10n_util::GetStringUTF16(IDS_MACHINE_LEVEL_INSTALL_CONFLICT);
         const string16 caption = l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
         const UINT flags = MB_OK | MB_ICONERROR | MB_TOPMOST;
         ui::MessageBox(NULL, text, caption, flags);
       }
       CommandLine uninstall_cmd(
           InstallUtil::GetChromeUninstallCmd(false, dist->GetType()));
       if (!uninstall_cmd.GetProgram().empty()) {
+        uninstall_cmd.AppendSwitch(installer::switches::kSelfDestruct);
         uninstall_cmd.AppendSwitch(installer::switches::kForceUninstall);
         uninstall_cmd.AppendSwitch(
             installer::switches::kDoNotRemoveSharedItems);
-        base::LaunchOptions launch_options;
+
+        const FilePath setup_exe(uninstall_cmd.GetProgram());
+        const string16 params(uninstall_cmd.GetArgumentsString());
+
+        SHELLEXECUTEINFO sei = { sizeof(sei) };
+        sei.fMask = SEE_MASK_NOASYNC;
+        sei.nShow = SW_SHOWNORMAL;
+        sei.lpFile = setup_exe.value().c_str();
+        sei.lpParameters = params.c_str();
+        // On Windows 8 SEE_MASK_FLAG_LOG_USAGE is necessary to guarantee we
+        // flip to the Desktop when launching.
         if (is_metro)
-          launch_options.force_breakaway_from_job_ = true;
-        base::LaunchProcess(uninstall_cmd, launch_options, NULL);
+          sei.fMask |= SEE_MASK_FLAG_LOG_USAGE;
+
+        if (!::ShellExecuteEx(&sei))
+          DPCHECK(false);
       }
       return true;
     }
   }
   return false;
 }
 
 string16 TranslationDelegate::GetLocalizedString(int installer_string_id) {
   int resource_id = 0;
   switch (installer_string_id) {
@@ skipping 11 matching lines @@
   if (resource_id)
     return l10n_util::GetStringUTF16(resource_id);
   return string16();
 }
 
 // static
 void ChromeBrowserMainPartsWin::SetupInstallerUtilStrings() {
   CR_DEFINE_STATIC_LOCAL(TranslationDelegate, delegate, ());
   installer::SetTranslationDelegate(&delegate);
 }