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

chrome/nacl/nacl_listener.cc

Index: chrome/nacl/nacl_listener.cc
===================================================================
--- chrome/nacl/nacl_listener.cc	(revision 133072)
+++ chrome/nacl/nacl_listener.cc	(working copy)
@@ -180,6 +180,11 @@
     return;
   }
 
+  scoped_ptr<IPC::SyncChannel> ipc_channel(
+      new IPC::SyncChannel(this, io_thread_.message_loop_proxy(),
+                           &shutdown_event_));
+  ipc_channel->Init(params.channel_name, IPC::Channel::MODE_SERVER, true);

[dmichael (off chromium), 2012/04/25 21:06:00]

You're not doing anything with ipc_channel yet. Is that intentional? If so,
maybe it would be good to have a TODO here?

+
   std::vector<nacl::FileDescriptor> handles = params.handles;
 
 #if defined(OS_LINUX) || defined(OS_MACOSX)