Fix bug where many extensions don't install due to sandbox.

chrome/utility/utility_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 "app/app_switches.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/system_monitor.h"
 #include "chrome/common/child_process.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.h"
+#include "chrome/common/extensions/extension_l10n_util.h"
 #include "chrome/common/logging_chrome.h"
 #include "chrome/common/main_function_params.h"
 #include "chrome/utility/utility_thread.h"
 
 #if defined(OS_WIN)
 #include "chrome/common/sandbox_init_wrapper.h"
 #include "sandbox/src/sandbox.h"
 #endif
 
 // Mainline routine for running as the utility process.
@@ skipping 10 matching lines @@
   utility_process.set_main_thread(new UtilityThread());
 #if defined(OS_WIN)
   sandbox::TargetServices* target_services =
       parameters.sandbox_info_.TargetServices();
   if (!target_services)
     return false;
 
   target_services->LowerToken();
 #endif
 
+  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  std::string lang = command_line->GetSwitchValueASCII(switches::kLang);
+  if (!lang.empty())
+    extension_l10n_util::SetProcessLocale(lang);
+
   MessageLoop::current()->Run();
 
   return 0;
 }