Pepper: Simplify LaunchSelLdr error reporting.

ppapi/native_client/src/trusted/plugin/nacl_entry_points.h

 /*
  * Copyright (c) 2012 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.
  */
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_NACL_ENTRY_POINTS_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_NACL_ENTRY_POINTS_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <string>
 
 #include "native_client/src/shared/imc/nacl_imc_c.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/private/ppb_instance_private.h"
 #include "ppapi/c/private/ppb_nacl_private.h"
 
 typedef PP_ExternalPluginResult (*LaunchNaClProcessFunc)(
     PP_Instance instance,
+    PP_Bool main_service_runtime,
     const char* alleged_url,
     PP_Bool uses_irt,
     PP_Bool uses_ppapi,
     PP_Bool uses_nonsfi_mode,
     PP_Bool enable_ppapi_dev,
     PP_Bool enable_dyncode_syscalls,
     PP_Bool enable_exception_handling,
     PP_Bool enable_crash_throttling,
     const PPP_ManifestService* manifest_service_interface,
     void* manifest_service_user_data,
     NaClHandle* result_socket,
-    struct PP_Var* error_message,
     PP_CompletionCallback callback);
 
-
 extern LaunchNaClProcessFunc launch_nacl_process;
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_NACL_ENTRY_POINTS_H_