Fix extension packer command-line code for Mac

chrome/browser/process_singleton_win.cc

Index: chrome/browser/process_singleton_win.cc
diff --git a/chrome/browser/process_singleton_win.cc b/chrome/browser/process_singleton_win.cc
index 6ace2f51794fc3d3512980f4f60c30df0937f3dd..4925d24e1d1320fd3f0ec667ae7d3b7a2eb5d6a2 100644
--- a/chrome/browser/process_singleton_win.cc
+++ b/chrome/browser/process_singleton_win.cc
@@ -285,8 +285,8 @@ LRESULT ProcessSingleton::OnCopyData(HWND hwnd, const COPYDATASTRUCT* cds) {
     // in the process that is running with the target profile, otherwise the
     // uninstall will fail to unload and remove all components.
     if (parsed_command_line.HasSwitch(switches::kUninstallExtension)) {
-      extensions_startup::HandleUninstallExtension(parsed_command_line,
-                                                   profile);
+      ExtensionsStartupUtil ext_startup_util;
+      ext_startup_util.UninstallExtension(parsed_command_line, profile);
       return TRUE;
     }