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

media/cast/net/rtp/rtp_sender.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.
 
 // This file contains the interface to the cast RTP sender.
 
 #ifndef MEDIA_CAST_NET_RTP_RTP_SENDER_H_
 #define MEDIA_CAST_NET_RTP_RTP_SENDER_H_
 
 #include <map>
@@ skipping 53 matching lines @@
   size_t send_octet_count() const {
     return packetizer_ ? packetizer_->send_octet_count() : 0;
   }
   uint32 ssrc() const { return config_.ssrc; }
 
  private:
   void UpdateSequenceNumber(Packet* packet);
 
   base::TickClock* clock_;  // Not owned by this class.
   RtpPacketizerConfig config_;
+  PacketStorage storage_;
   scoped_ptr<RtpPacketizer> packetizer_;
-  scoped_ptr<PacketStorage> storage_;
   PacedSender* const transport_;
   scoped_refptr<base::SingleThreadTaskRunner> transport_task_runner_;
 
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<RtpSender> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RtpSender);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_NET_RTP_SENDER_RTP_SENDER_H_