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

remoting/protocol/protocol_mock_objects.h

 // Copyright (c) 2012 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_PROTOCOL_MOCK_OBJECTS_H_
 #define REMOTING_PROTOCOL_PROTOCOL_MOCK_OBJECTS_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 24 matching lines @@
 
 class MockConnectionToClientEventHandler
     : public ConnectionToClient::EventHandler {
  public:
   MockConnectionToClientEventHandler();
   ~MockConnectionToClientEventHandler() override;
 
   MOCK_METHOD1(OnConnectionAuthenticating,
                void(ConnectionToClient* connection));
   MOCK_METHOD1(OnConnectionAuthenticated, void(ConnectionToClient* connection));
+  MOCK_METHOD1(CreateVideoStreams, void(ConnectionToClient* connection));
   MOCK_METHOD1(OnConnectionChannelsConnected,
                void(ConnectionToClient* connection));
   MOCK_METHOD2(OnConnectionClosed,
                void(ConnectionToClient* connection, ErrorCode error));
   MOCK_METHOD1(OnCreateVideoEncoder, void(scoped_ptr<VideoEncoder>* encoder));
   MOCK_METHOD2(OnInputEventReceived,
                void(ConnectionToClient* connection, int64_t timestamp));
   MOCK_METHOD3(OnRouteChange,
                void(ConnectionToClient* connection,
                     const std::string& channel_name,
@@ skipping 180 matching lines @@
   // Runs tasks synchronously instead of posting them to |task_runner|.
   void PostTask(const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
                 const tracked_objects::Location& from_here,
                 const base::Closure& task) override;
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_PROTOCOL_MOCK_OBJECTS_H_