[Cast] Limit frames in flight by duration, and not by number of frames.

media/cast/net/cast_transport_config.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 MEDIA_CAST_NET_CAST_TRANSPORT_CONFIG_H_
 #define MEDIA_CAST_NET_CAST_TRANSPORT_CONFIG_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 23 matching lines @@
 
   // Identifier refering to this sender.
   uint32 ssrc;
 
   // Identifier for incoming RTCP traffic.
   uint32 feedback_ssrc;
 
   // RTP payload type enum: Specifies the type/encoding of frame data.
   int rtp_payload_type;
 
-  // The number of most-recent frames that must be stored in the transport
-  // layer, to facilitate re-transmissions.
-  int stored_frames;
-
   // The AES crypto key and initialization vector.  Each of these strings
   // contains the data in binary form, of size kAesKeySize.  If they are empty
   // strings, crypto is not being used.
   std::string aes_key;
   std::string aes_iv_mask;
 };
 
 // A combination of metadata and data for one encoded frame.  This can contain
 // audio data or video data or other.
 struct EncodedFrame {
@@ skipping 125 matching lines @@
          lhs.ntp_fraction == rhs.ntp_fraction &&
          lhs.rtp_timestamp == rhs.rtp_timestamp &&
          lhs.send_packet_count == rhs.send_packet_count &&
          lhs.send_octet_count == rhs.send_octet_count;
 }
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_NET_CAST_TRANSPORT_CONFIG_H_