Change PacketKey to be unique for each frame packet by including

media/cast/net/rtp/rtp_packetizer.cc

 // 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.
 
 #include "media/cast/net/rtp/rtp_packetizer.h"
 
 #include <string>
 
 #include "base/big_endian.h"
 #include "base/logging.h"
@@ skipping 89 matching lines @@
       packet->data.push_back(
           static_cast<uint8>(frame.new_playout_delay_ms));
     }
 
     // Copy payload data.
     packet->data.insert(packet->data.end(),
                         data_iter,
                         data_iter + payload_length);
     data_iter += payload_length;
 
-    const PacketKey key =
-        PacedPacketSender::MakePacketKey(frame.reference_time,
-                                         config_.ssrc,
-                                         packet_id_++);
+    const PacketKey key = PacedPacketSender::MakePacketKey(
+        PacketKey::RTP, frame.frame_id, config_.ssrc, packet_id_++);
     packets.push_back(make_pair(key, packet));
 
     // Update stats.
     ++send_packet_count_;
     send_octet_count_ += payload_length;
   }
   DCHECK(packet_id_ == num_packets) << "Invalid state";
 
   packet_storage_->StoreFrame(frame.frame_id, packets);
 
@@ skipping 15 matching lines @@
   base::BigEndianWriter big_endian_writer(
       reinterpret_cast<char*>(&((*packet)[start_size])), 10);
   big_endian_writer.WriteU16(sequence_number_);
   big_endian_writer.WriteU32(time_stamp);
   big_endian_writer.WriteU32(config_.ssrc);
   ++sequence_number_;
 }
 
 }  // namespace cast
 }  // namespace media