Add an IPC channel between the NaCl loader process and the renderer.

chrome/common/nacl_types.h

 // Copyright (c) 2011 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 CHROME_COMMON_NACL_TYPES_H_
 #define CHROME_COMMON_NACL_TYPES_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 27 matching lines @@
 
 // Parameters sent to the NaCl process when we start it.
 //
 // If you change this, you will also need to update the IPC serialization in
 // nacl_messages.h.
 struct NaClStartParams {
   NaClStartParams();
   ~NaClStartParams();
 
   std::vector<FileDescriptor> handles;
+  std::string channel_name;
   std::string validation_cache_key;
 
   // Chrome version string. Sending the version string over IPC avoids linkage
   // issues in cases where NaCl is not compiled into the main Chromium
   // executable or DLL.
   std::string version;
 
   bool enable_exception_handling;
 };
 
 }  // namespace nacl
 
 #endif  // CHROME_COMMON_NACL_TYPES_H_