Build nacl_helper_nonsfi with GN

ppapi/nacl_irt/irt_pnacl_translator_link.cc

Index: ppapi/nacl_irt/irt_pnacl_translator_link.cc
diff --git a/ppapi/nacl_irt/irt_pnacl_translator_link.cc b/ppapi/nacl_irt/irt_pnacl_translator_link.cc
index f5569aa54acb25d180a14432fd9f922c4b2c3c57..af31fd464b60c889cff8bb141efb4f439ba6f8b1 100644
--- a/ppapi/nacl_irt/irt_pnacl_translator_link.cc
+++ b/ppapi/nacl_irt/irt_pnacl_translator_link.cc
@@ -2,11 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "build/build_config.h"
 #include "native_client/src/shared/platform/nacl_log.h"
 #include "native_client/src/shared/srpc/nacl_srpc.h"
 #include "native_client/src/untrusted/irt/irt_dev.h"
 #include "ppapi/nacl_irt/irt_interfaces.h"
 
+#if !defined(OS_NACL_NONSFI)
+
 namespace {
 
 const int kMaxObjectFiles = 16;
@@ -59,3 +62,5 @@ const struct nacl_irt_private_pnacl_translator_link
     nacl_irt_private_pnacl_translator_link = {
   ServeLinkRequest
 };
+
+#endif  // !defined(OS_NACL_NONSFI)