NSS: don't set environment variables when multi-threaded.

chrome/app/chrome_main.cc

 // Copyright (c) 2010 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_paths.h"
 #include "app/app_switches.h"
 #include "app/resource_bundle.h"
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/i18n/icu_util.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/message_loop.h"
 #include "base/metrics/stats_counters.h"
 #include "base/metrics/stats_table.h"
+#include "base/nss_util.h"
 #include "base/path_service.h"
 #include "base/process_util.h"
 #include "base/string_number_conversions.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/diagnostics/diagnostics_main.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
@@ skipping 677 matching lines @@
     //
     // Note that we *can't* rely on BeingDebugged to catch this case because we
     // are the child process, which is not being debugged.
     // TODO(evanm): move this to some shared subprocess-init function.
     if (!base::debug::BeingDebugged())
       signal(SIGINT, SIG_IGN);
 #endif
   }
   SetupCRT(command_line);
 
+#if defined(USE_NSS)
+  base::EarlySetupForNSSInit();
+#endif
+
   // Initialize the Chrome path provider.
   app::RegisterPathProvider();
   chrome::RegisterPathProvider();
 
   // Notice a user data directory override if any
   const FilePath user_data_dir =
       command_line.GetSwitchValuePath(switches::kUserDataDir);
   if (!user_data_dir.empty())
     CHECK(PathService::Override(chrome::DIR_USER_DATA, user_data_dir));
 
@@ skipping 190 matching lines @@
 
   int exit_code = RunNamedProcessTypeMain(process_type, main_params);
 
   if (SubprocessNeedsResourceBundle(process_type))
     ResourceBundle::CleanupSharedInstance();
 
   LowLevelShutdown();
 
   return exit_code;
 }