NaCl: Send fatal log messages via shared memory.

ppapi/native_client/src/trusted/plugin/service_runtime.cc

 /*
  * 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.
  */
 
 #define NACL_LOG_MODULE_NAME "Plugin_ServiceRuntime"
 
 #include "ppapi/native_client/src/trusted/plugin/service_runtime.h"
 
@@ skipping 570 matching lines @@
   NaClCondVarDtor(&cond_);
   NaClMutexDtor(&mu_);
 }
 
 void ServiceRuntime::set_exit_status(int exit_status) {
   nacl::MutexLocker take(&mu_);
   if (main_service_runtime_)
     plugin_->set_exit_status(exit_status & 0xff);
 }
 
-nacl::string ServiceRuntime::GetCrashLogOutput() {
-  if (NULL != subprocess_.get()) {
-    return subprocess_->GetCrashLogOutput();
-  } else {
-    return std::string();
-  }
-}
-
 }  // namespace plugin