Fix user-level Chrome self-destruction issues on Windows 8.

chrome/browser/chrome_browser_main_win.cc

Index: chrome/browser/chrome_browser_main_win.cc
diff --git a/chrome/browser/chrome_browser_main_win.cc b/chrome/browser/chrome_browser_main_win.cc
index 10ed28d3807543761ded08f6d77fd3101b70667a..afff87c18f13e659b266e51557cab917967867c5 100644
--- a/chrome/browser/chrome_browser_main_win.cc
+++ b/chrome/browser/chrome_browser_main_win.cc
@@ -361,18 +361,15 @@ bool ChromeBrowserMainPartsWin::CheckMachineLevelInstall() {
     std::wstring exe = exe_path.value();
     FilePath user_exe_path(installer::GetChromeInstallPath(false, dist));
     if (FilePath::CompareEqualIgnoreCase(exe, user_exe_path.value())) {
-      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);

[robertshield, 2012/11/16 20:23:33]

Let's only remove this on Win8/metro for now. We can take it out when we get the
auto-launching of system level in.

[grt (UTC plus 2), 2012/11/16 21:11:24]

what he said.

[gab, 2012/11/20 00:46:36]

Done.

       CommandLine uninstall_cmd(
           InstallUtil::GetChromeUninstallCmd(false, dist->GetType()));
       if (!uninstall_cmd.GetProgram().empty()) {
         uninstall_cmd.AppendSwitch(installer::switches::kForceUninstall);
         uninstall_cmd.AppendSwitch(
             installer::switches::kDoNotRemoveSharedItems);
-        base::LaunchProcess(uninstall_cmd, base::LaunchOptions(), NULL);
+        base::LaunchOptions launch_options;
+        launch_options.force_breakaway_from_job_ = true;
+        base::LaunchProcess(uninstall_cmd, launch_options, NULL);
       }
       return true;
     }