Revert of Convert NaCl renderer-loader messages to mojo.

components/nacl/loader/nacl_listener.h

 // Copyright 2013 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 COMPONENTS_NACL_LOADER_NACL_LISTENER_H_
 #define COMPONENTS_NACL_LOADER_NACL_LISTENER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 92 matching lines @@
   // The outer sandbox on Linux and OSX prevents
   // sysconf(_SC_NPROCESSORS) from working; in Windows, there are no
   // problems with invoking GetSystemInfo.  Therefore, only in
   // OS_POSIX do we need to supply the number of cores into the
   // NaClChromeMainArgs object.
   int number_of_cores_;
 #endif
 
   std::unique_ptr<base::SharedMemory> crash_info_shmem_;
 
-  std::unique_ptr<NaClTrustedListener> trusted_listener_;
+  scoped_refptr<NaClTrustedListener> trusted_listener_;
 
   ResolveFileTokenCallback resolved_cb_;
 
   // Used to identify what thread we're on.
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
 
   typedef std::map<
     std::string,  // manifest key
     std::pair<IPC::PlatformFileForTransit,
               base::FilePath> > PrefetchedResourceFilesMap;
   PrefetchedResourceFilesMap prefetched_resource_files_;
 
   bool is_started_;
 
   std::unique_ptr<mojo::edk::ScopedIPCSupport> mojo_ipc_support_;
 
   DISALLOW_COPY_AND_ASSIGN(NaClListener);
 };
 
 #endif  // COMPONENTS_NACL_LOADER_NACL_LISTENER_H_