Pepper: Simplify LaunchSelLdr error reporting.

ppapi/native_client/src/trusted/plugin/sel_ldr_launcher_chrome.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 PPAPI_NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_SEL_LDR_LAUNCHER_CHROME_H_
 #define PPAPI_NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_SEL_LDR_LAUNCHER_CHROME_H_
 
 #include "native_client/src/trusted/nonnacl_util/sel_ldr_launcher.h"
 #include "ppapi/c/pp_instance.h"
-#include "ppapi/c/pp_var.h"
 #include "ppapi/c/private/ppb_nacl_private.h"
 #include "ppapi/cpp/completion_callback.h"
 
 namespace plugin {
 
 class SelLdrLauncherChrome : public nacl::SelLdrLauncherBase {
  public:
   virtual bool Start(const char* url);
   virtual void Start(PP_Instance instance,
+                     bool main_service_runtime,
                      const char* url,
                      bool uses_irt,
                      bool uses_ppapi,
                      bool uses_nonsfi_mode,
                      bool enable_ppapi_dev,
                      bool enable_dyncode_syscalls,
                      bool enable_exception_handling,
                      bool enable_crash_throttling,
                      const PPP_ManifestService* manifest_service_interface,
                      void* manifest_service_user_data,
-                     PP_Var* error_message,
                      pp::CompletionCallback callback);
 };
 
 }  // namespace plugin
 
 #endif