NaCl: Clean up file descriptor setup in nacl_helper on linux

content/zygote/zygote_main_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 <dlfcn.h>
 #include <fcntl.h>
 #include <pthread.h>
 #include <stdio.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
@@ skipping 445 matching lines @@
   // There need to be a corresponding call to PreinitializeSandboxFinish()
   // for each new process, this will be done in the Zygote child, once we know
   // our process type.
   linux_sandbox->PreinitializeSandboxBegin();
 
   sandbox::SetuidSandboxClient* setuid_sandbox =
       linux_sandbox->setuid_sandbox_client();
 
   if (forkdelegate != NULL) {
     VLOG(1) << "ZygoteMain: initializing fork delegate";
-    forkdelegate->Init(Zygote::kBrowserDescriptor,
-                       Zygote::kMagicSandboxIPCDescriptor);
+    forkdelegate->Init(Zygote::kMagicSandboxIPCDescriptor);
   } else {
     VLOG(1) << "ZygoteMain: fork delegate is NULL";
   }
 
   // Turn on the SELinux or SUID sandbox.
   bool using_suid_sandbox = false;
   bool has_started_new_init = false;
 
   if (!EnterSandbox(setuid_sandbox,
                     &using_suid_sandbox,
@@ skipping 10 matching lines @@
   }
 
   int sandbox_flags = linux_sandbox->GetStatus();
 
   Zygote zygote(sandbox_flags, forkdelegate);
   // This function call can return multiple times, once per fork().
   return zygote.ProcessRequests();
 }
 
 }  // namespace content