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

chrome/app/chrome_main.cc

Index: chrome/app/chrome_main.cc
diff --git a/chrome/app/chrome_main.cc b/chrome/app/chrome_main.cc
index b13944cf0bb8ed9c518a55e64b35e46ae971c94e..1397cf9b2229d57a8af4d1bafb1d7a3f6d4e5dfb 100644
--- a/chrome/app/chrome_main.cc
+++ b/chrome/app/chrome_main.cc
@@ -13,6 +13,7 @@
 #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"
@@ -710,6 +711,10 @@ int ChromeMain(int argc, char** argv) {
   }
   SetupCRT(command_line);
 
+#if defined(USE_NSS)
+  base::EarlySetupForNSSInit();
+#endif
+
   // Initialize the Chrome path provider.
   app::RegisterPathProvider();
   chrome::RegisterPathProvider();