Add an IPC channel between the NaCl loader process and the renderer.

chrome/nacl/nacl_ipc_adapter.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 "chrome/nacl/nacl_ipc_adapter.h"
 
 #include <limits.h>
 #include <string.h>
 
 #include "base/basictypes.h"
@@ skipping 263 matching lines @@
   cond_var_.Signal();
 
   task_runner_->PostTask(FROM_HERE,
       base::Bind(&NaClIPCAdapter::CloseChannelOnIOThread, this));
 }
 
 NaClDesc* NaClIPCAdapter::MakeNaClDesc() {
   return MakeNaClDescCustom(this);
 }
 
+#if defined(OS_POSIX)
+int NaClIPCAdapter::TakeClientFileDescriptor() {
+  return io_thread_data_.channel_->TakeClientFileDescriptor();
+}
+#endif
+
 bool NaClIPCAdapter::OnMessageReceived(const IPC::Message& message) {
   {
     base::AutoLock lock(lock_);
 
     // There is some padding in this structure (the "padding" member is 16
     // bits but this then gets padded to 32 bits). We want to be sure not to
     // leak data to the untrusted plugin, so zero everything out first.
     NaClMessageHeader header;
     memset(&header, 0, sizeof(NaClMessageHeader));
 
@@ skipping 99 matching lines @@
     NOTREACHED();
 }
 
 void NaClIPCAdapter::CloseChannelOnIOThread() {
   io_thread_data_.channel_->Close();
 }
 
 void NaClIPCAdapter::SendMessageOnIOThread(scoped_ptr<IPC::Message> message) {
   io_thread_data_.channel_->Send(message.release());
 }