Non-SFI mode: Build ppapi libraries for nacl_helper_nonsfi.

ppapi/nacl_irt/irt_start.cc

Index: ppapi/nacl_irt/irt_start.cc
diff --git a/ppapi/nacl_irt/irt_start.cc b/ppapi/nacl_irt/irt_start.cc
index f184fa604c39fcc6ffc54444230ec281c9574f7c..f199de1383be730e1446c09f16e9c4f775539015 100644
--- a/ppapi/nacl_irt/irt_start.cc
+++ b/ppapi/nacl_irt/irt_start.cc
@@ -2,6 +2,12 @@
 // 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"
+
+// We need nacl_irt_start injection in SFI mode. Non-SFI has a different
+// start up procedure so we just exclude it.
+#if defined(OS_NACL_SFI)
+
 #include "base/at_exit.h"
 #include "native_client/src/public/chrome_main.h"
 #include "native_client/src/public/irt_core.h"
@@ -24,3 +30,5 @@ void nacl_irt_start(uint32_t* info) {
 
   nacl_irt_enter_user_code(info, chrome_irt_query);
 }
+
+#endif  // defined(OS_NACL_SFI)