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

content/zygote/zygote_linux.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.
 
 #include "content/zygote/zygote_linux.h"
 
 #include <fcntl.h>
 #include <string.h>
 #include <sys/socket.h>
 #include <sys/types.h>
@@ skipping 377 matching lines @@
     base::ProcessId real_pid;
     if (!base::ReadFromFD(read_pipe.get(),
                           reinterpret_cast<char*>(&real_pid),
                           sizeof(real_pid))) {
       LOG(FATAL) << "Failed to synchronise with parent zygote process";
     }
     if (real_pid <= 0) {
       LOG(FATAL) << "Invalid pid from parent zygote";
     }
 #if defined(OS_LINUX)
-    // Sandboxed processes need to send the global, non-namespaced PID when
-    // setting up an IPC channel to their parent.
-    IPC::Channel::SetGlobalPid(real_pid);
     // Force the real PID so chrome event data have a PID that corresponds
     // to system trace event data.
     base::debug::TraceLog::GetInstance()->SetProcessID(
         static_cast<int>(real_pid));
 #endif
     return 0;
   }
 
   // In the parent process.
   read_pipe.reset();
@@ skipping 174 matching lines @@
                                     PickleIterator iter) {
   if (HANDLE_EINTR(write(fd, &sandbox_flags_, sizeof(sandbox_flags_))) !=
                    sizeof(sandbox_flags_)) {
     PLOG(ERROR) << "write";
   }
 
   return false;
 }
 
 }  // namespace content