Add a Mojo EDK for Chrome that uses one OS pipe per message pipe.

ipc/ipc_channel_proxy.cc

Index: ipc/ipc_channel_proxy.cc
diff --git a/ipc/ipc_channel_proxy.cc b/ipc/ipc_channel_proxy.cc
index 84f87fc873365477af257b9dc5b64f2045417fca..75a549d4c09f78245cb2602f92073fbb054a028f 100644
--- a/ipc/ipc_channel_proxy.cc
+++ b/ipc/ipc_channel_proxy.cc
@@ -86,6 +86,14 @@ bool ChannelProxy::Context::TryFilters(const Message& message) {
 
 // Called on the IPC::Channel thread
 bool ChannelProxy::Context::OnMessageReceived(const Message& message) {
+
+  if (listener_task_runner_->BelongsToCurrentThread()) {
+    OnDispatchMessage(message);
+    return true;
+  }
+
+
+
   // First give a chance to the filters to process this message.
   if (!TryFilters(message))
     OnMessageReceivedNoFilter(message);