Build nacl_helper_nonsfi with GN

ppapi/nacl_irt/irt_pnacl_translator_compile.cc

Index: ppapi/nacl_irt/irt_pnacl_translator_compile.cc
diff --git a/ppapi/nacl_irt/irt_pnacl_translator_compile.cc b/ppapi/nacl_irt/irt_pnacl_translator_compile.cc
index e546098c3de817a94d1e44eacb41f216461012e9..9afd505b6b94eef0081aecc0e17b6e93aaee3ba9 100644
--- a/ppapi/nacl_irt/irt_pnacl_translator_compile.cc
+++ b/ppapi/nacl_irt/irt_pnacl_translator_compile.cc
@@ -5,11 +5,14 @@
 #include <argz.h>
 #include <string.h>
 
+#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;
@@ -115,3 +118,5 @@ const struct nacl_irt_private_pnacl_translator_compile
     nacl_irt_private_pnacl_translator_compile = {
   ServeTranslateRequest
 };
+
+#endif  // !defined(OS_NACL_NONSFI)