Fix WebRTC transport to use single offer-answer exchange instead of two.

remoting/protocol/webrtc_connection_to_client.h

 // Copyright 2015 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.
 
 #ifndef REMOTING_PROTOCOL_WEBRTC_CONNECTION_TO_CLIENT_H_
 #define REMOTING_PROTOCOL_WEBRTC_CONNECTION_TO_CLIENT_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
+#include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "remoting/protocol/channel_dispatcher_base.h"
 #include "remoting/protocol/connection_to_client.h"
 #include "remoting/protocol/session.h"
 #include "remoting/protocol/webrtc_transport.h"
 
 namespace remoting {
 namespace protocol {
 
 class HostControlDispatcher;
@@ skipping 44 matching lines @@
   // Event handler for handling events sent from this object.
   ConnectionToClient::EventHandler* event_handler_ = nullptr;
 
   WebrtcTransport transport_;
 
   std::unique_ptr<Session> session_;
 
   std::unique_ptr<HostControlDispatcher> control_dispatcher_;
   std::unique_ptr<HostEventDispatcher> event_dispatcher_;
 
+  base::WeakPtrFactory<WebrtcConnectionToClient> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(WebrtcConnectionToClient);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_WEBRTC_CONNECTION_TO_CLIENT_H_