Cast: Avoid retransmit if we sent the same packet recently (less than RTT)

chrome/browser/media/cast_transport_host_filter.h

 // 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.
 
 #ifndef CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_
 #define CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_
 
 #include "base/id_map.h"
 #include "base/time/default_tick_clock.h"
 #include "chrome/common/cast_messages.h"
@@ skipping 36 matching lines @@
       int32 channel_id,
       const media::cast::transport::EncodedFrame& video_frame);
   void OnSendRtcpFromRtpSender(
       int32 channel_id,
       const media::cast::transport::SendRtcpFromRtpSenderData& data,
       const media::cast::transport::RtcpDlrrReportBlock& dlrr);
   void OnResendPackets(
       int32 channel_id,
       bool is_audio,
       const media::cast::MissingFramesAndPacketsMap& missing_packets,
-      bool cancel_rtx_if_not_in_list);
+      bool cancel_rtx_if_not_in_list,
+      base::TimeDelta dedupe_window);
   void OnNew(
       int32 channel_id,
       const net::IPEndPoint& remote_end_point);
   void OnDelete(int32 channel_id);
 
   IDMap<media::cast::transport::CastTransportSender, IDMapOwnPointer> id_map_;
 
   // Clock used by Cast transport.
   base::DefaultTickClock clock_;
 
   DISALLOW_COPY_AND_ASSIGN(CastTransportHostFilter);
 };
 
 }  // namespace cast
 
 #endif  // CHROME_BROWSER_MEDIA_CAST_TRANSPORT_HOST_FILTER_H_