Cast: Move retransmission to the transport

media/cast/net/cast_transport_sender.h

Index: media/cast/net/cast_transport_sender.h
diff --git a/media/cast/net/cast_transport_sender.h b/media/cast/net/cast_transport_sender.h
index 31166f549d4822cd6b56dc3c840376011ef9d7de..e6d3dc68ab299665bf83a1b0b4b0442ea096f3e1 100644
--- a/media/cast/net/cast_transport_sender.h
+++ b/media/cast/net/cast_transport_sender.h
@@ -85,19 +85,15 @@ class CastTransportSender : public base::NonThreadSafe {
       base::TimeTicks current_time,
       uint32 current_time_as_rtp_timestamp) = 0;
 
-  // Retransmission request.
-  // |missing_packets| includes the list of frames and packets in each
-  // frame to be re-transmitted.
-  // If |cancel_rtx_if_not_in_list| is used as an optimization to cancel
-  // pending re-transmission requests of packets not listed in
-  // |missing_packets|. If the requested packet(s) were sent recently
-  // (how long is specified by |dedupe_window|) then this re-transmit
-  // will be ignored.
-  virtual void ResendPackets(
-      bool is_audio,
-      const MissingFramesAndPacketsMap& missing_packets,
-      bool cancel_rtx_if_not_in_list,
-      base::TimeDelta dedupe_window) = 0;
+  // Cancels sending packets for the frames in the set.
+  // |ssrc| is the SSRC for the stream.
+  // |frame_ids| contains the IDs of the frames that will be cancelled.
+  virtual void CancelSendingFrames(uint32 ssrc,
+                                   const std::set<uint32>& frame_ids) = 0;
+
+  // Resends a frame or part of a frame to kickstart. This is used when the
+  // stream appears to be stalled.
+  virtual void ResendFrameForKickstart(uint32 ssrc, uint32 frame_id) = 0;
 
   // Returns a callback for receiving packets for testing purposes.
   virtual PacketReceiverCallback PacketReceiverForTesting();