Non-SFI mode: Use dummy PID for NaCl's IPC channel on Linux platform.

ipc/ipc_channel_posix.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 IPC_IPC_CHANNEL_POSIX_H_
 #define IPC_IPC_CHANNEL_POSIX_H_
 
 #include "ipc/ipc_channel.h"
 
 #include <sys/socket.h>  // for CMSG macros
@@ skipping 67 matching lines @@
   // for more connections.
   void ResetToAcceptingConnectionState();
 
   // Returns true if the peer process' effective user id can be determined, in
   // which case the supplied peer_euid is updated with it.
   bool GetPeerEuid(uid_t* peer_euid) const;
 
   void CloseClientFileDescriptor();
 
   static bool IsNamedServerInitialized(const std::string& channel_id);
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_NACL_NONSFI)
   static void SetGlobalPid(int pid);
-#endif  // OS_LINUX
+#endif  // defined(OS_LINUX) || defined(OS_NACL_NONSFI)
 
  private:
   bool CreatePipe(const IPC::ChannelHandle& channel_handle);
 
   bool ProcessOutgoingMessages();
 
   bool AcceptConnection();
   void ClosePipeOnError();
   int GetHelloMessageProcId() const;
   void QueueHelloMessage();
@@ skipping 104 matching lines @@
 #if defined(OS_MACOSX)
   // On OSX, sent FDs must not be closed until we get an ack.
   // Keep track of sent FDs here to make sure the remote is not
   // trying to bamboozle us.
   std::set<int> fds_to_close_;
 #endif
 
   // True if we are responsible for unlinking the unix domain socket file.
   bool must_unlink_;
 
-#if defined(OS_LINUX)
+#if defined(OS_LINUX) || defined(OS_NACL_NONSFI)
   // If non-zero, overrides the process ID sent in the hello message.
   static int global_pid_;
-#endif  // OS_LINUX
+#endif  // defined(OS_LINUX) || defined(OS_NACL_NONSFI)
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ChannelPosix);
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_CHANNEL_POSIX_H_