mac: Fix an attachment broker race condition.

ipc/ipc_channel_posix.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 "ipc/ipc_channel_posix.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <stddef.h>
 #include <stdint.h>
@@ skipping 999 matching lines @@
     case Channel::HELLO_MESSAGE_TYPE:
       int pid;
       if (!iter.ReadInt(&pid))
         NOTREACHED();
 
       peer_pid_ = pid;
       listener()->OnChannelConnected(pid);
 
       if (!FlushPrelimQueue())
         ClosePipeOnError();
+
+      if (IsAttachmentBrokerEndpoint() &&
+          AttachmentBroker::GetGlobal() &&
+          AttachmentBroker::GetGlobal()->IsPrivilegedBroker()) {
+        AttachmentBroker::GetGlobal()->ReceivedPeerPid(pid);
+      }
       break;
 
 #if defined(OS_MACOSX)
     case Channel::CLOSE_FD_MESSAGE_TYPE:
       int fd, hops;
       if (!iter.ReadInt(&hops))
         NOTREACHED();
       if (!iter.ReadInt(&fd))
         NOTREACHED();
       if (hops == 0) {
@@ skipping 103 matching lines @@
 // static
 void Channel::SetGlobalPid(int pid) {
   ChannelPosix::SetGlobalPid(pid);
 }
 int Channel::GetGlobalPid() {
   return ChannelPosix::GetGlobalPid();
 }
 #endif  // OS_LINUX
 
 }  // namespace IPC