Cast:Transport: Dividing A/V Initialization pipeline

media/cast/transport/cast_transport_sender_impl.h

Index: media/cast/transport/cast_transport_sender_impl.h
diff --git a/media/cast/transport/cast_transport_sender_impl.h b/media/cast/transport/cast_transport_sender_impl.h
index a8084f8737dca0cafbfc6e4fbe23bdfc97db4ce6..ffc3636a0d53303ee4c2816dd67e4f18654fc6d0 100644
--- a/media/cast/transport/cast_transport_sender_impl.h
+++ b/media/cast/transport/cast_transport_sender_impl.h
@@ -28,13 +28,18 @@ class CastTransportSenderImpl : public CastTransportSender {
   // transport is provided.
   CastTransportSenderImpl(
       base::TickClock* clock,
-      const CastTransportConfig& config,
+      const net::IPEndPoint& local_end_point,
+      const net::IPEndPoint& remote_end_point,
       const CastTransportStatusCallback& status_callback,
       const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner,
       PacketSender* external_transport);
 
   virtual ~CastTransportSenderImpl();
 
+  virtual void InitializeAudio(const CastTransportAudioConfig& config) OVERRIDE;
+
+  virtual void InitializeVideo(const CastTransportVideoConfig& config) OVERRIDE;
+
   // CastTransportSender implementation.
   virtual void SetPacketReceiver(const PacketReceiverCallback& packet_receiver)
       OVERRIDE;
@@ -65,11 +70,14 @@ class CastTransportSenderImpl : public CastTransportSender {
       const CastTransportRtpStatistics& callback) OVERRIDE;
 
  private:
+  base::TickClock* clock_;  // Not owned by this class.
+  CastTransportStatusCallback status_callback_;
+  scoped_refptr<base::SingleThreadTaskRunner> transport_task_runner_;
   scoped_ptr<UdpTransport> transport_;
   PacedSender pacer_;
   RtcpBuilder rtcp_builder_;
-  TransportAudioSender audio_sender_;
-  TransportVideoSender video_sender_;
+  scoped_ptr<TransportAudioSender> audio_sender_;
+  scoped_ptr<TransportVideoSender> video_sender_;
 
   DISALLOW_COPY_AND_ASSIGN(CastTransportSenderImpl);
 };