Adds routed interface support between RenderFrameHost and RenderFrame

ipc/message_router.cc

 // Copyright (c) 2011 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/message_router.h"
 
 #include "ipc/ipc_message.h"
 
 namespace IPC {
 
@@ skipping 19 matching lines @@
     return false;
   }
   routes_.AddWithID(listener, routing_id);
   return true;
 }
 
 void MessageRouter::RemoveRoute(int32_t routing_id) {
   routes_.Remove(routing_id);
 }
 
+Listener* MessageRouter::GetRoute(int32_t routing_id) {
+  return routes_.Lookup(routing_id);
+}
+
 bool MessageRouter::OnMessageReceived(const IPC::Message& msg) {
   if (msg.routing_id() == MSG_ROUTING_CONTROL)
     return OnControlMessageReceived(msg);
 
   return RouteMessage(msg);
 }
 
 bool MessageRouter::RouteMessage(const IPC::Message& msg) {
   IPC::Listener* listener = routes_.Lookup(msg.routing_id());
   if (!listener)
     return false;
 
   return listener->OnMessageReceived(msg);
 }
 
 }  // namespace IPC