Create new class "CastTransport", which encapsulates the message read and write event loops.

extensions/browser/api/cast_channel/logger.cc

 // Copyright 2014 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 "extensions/browser/api/cast_channel/logger.h"
 
 #include "base/strings/string_util.h"
 #include "base/time/tick_clock.h"
 #include "extensions/browser/api/cast_channel/cast_auth_util.h"
 #include "extensions/browser/api/cast_channel/logger_util.h"
@@ skipping 101 matching lines @@
   DCHECK(clock_);
 
   // Logger may not be necessarily be created on the IO thread, but logging
   // happens exclusively there.
   thread_checker_.DetachFromThread();
 }
 
 Logger::~Logger() {
 }
 
-void Logger::LogNewSocketEvent(const CastSocket& cast_socket) {
+void Logger::LogNewSocketEvent(const CastSocketImpl& cast_socket) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   int channel_id = cast_socket.id();
   SocketEvent event = CreateEvent(proto::CAST_SOCKET_CREATED);
   AggregatedSocketEvent& aggregated_socket_event =
       LogSocketEvent(channel_id, event);
 
   const net::IPAddressNumber& ip = cast_socket.ip_endpoint().address();
   aggregated_socket_event.set_endpoint_id(ip.back());
   aggregated_socket_event.set_channel_auth_type(cast_socket.channel_auth() ==
@@ skipping 218 matching lines @@
   if (it != aggregated_socket_events_.end()) {
     return it->second->last_errors;
   } else {
     return LastErrors();
   }
 }
 
 }  // namespace cast_channel
 }  // namespace api
 }  // namespace extensions