Revert of Remove IPC::BrokerableAttachment.

components/nacl/loader/nacl_ipc_adapter.cc

 // Copyright 2013 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 "components/nacl/loader/nacl_ipc_adapter.h"
 
 #include <limits.h>
 #include <string.h>
 
 #include <memory>
@@ skipping 608 matching lines @@
   new_msg->set_reply();
   new_msg->WriteInt(IPC::SyncMessage::GetMessageId(orig_msg));
 
   // Write empty file tokens.
   new_msg->WriteUInt64(0);  // token_lo
   new_msg->WriteUInt64(0);  // token_hi
 
   ppapi::proxy::SerializedHandle::WriteHeader(sh.header(),
                                               new_msg.get());
   new_msg->WriteBool(true);  // valid == true
+  new_msg->WriteBool(false);  // brokerable == false
   // The file descriptor is at index 0. There's only ever one file
   // descriptor provided for this message type, so this will be correct.
   new_msg->WriteInt(0);
 
   return new_msg;
 }
 
 void NaClIPCAdapter::SaveOpenResourceMessage(
     const IPC::Message& orig_msg,
     IPC::PlatformFileForTransit ipc_fd,
@@ skipping 202 matching lines @@
   header.flags = msg.flags();
   header.num_fds = static_cast<uint16_t>(rewritten_msg->desc_count());
 
   rewritten_msg->SetData(header, msg.payload(), msg.payload_size());
   locked_data_.to_be_received_.push(rewritten_msg);
 }
 
 int TranslatePepperFileReadWriteOpenFlagsForTesting(int32_t pp_open_flags) {
   return TranslatePepperFileReadWriteOpenFlags(pp_open_flags);
 }