Avoid circular dependency rtp_rtcp <-> paced_sender

webrtc/modules/rtp_rtcp/interface/rtp_rtcp.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef WEBRTC_MODULES_RTP_RTCP_INTERFACE_RTP_RTCP_H_
 #define WEBRTC_MODULES_RTP_RTCP_INTERFACE_RTP_RTCP_H_
 
 #include <set>
 #include <vector>
 
 #include "webrtc/modules/interface/module.h"
 #include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp_defines.h"
 
 namespace webrtc {
 // Forward declarations.
-class PacedSender;
-class PacketRouter;
 class ReceiveStatistics;
 class RemoteBitrateEstimator;
 class RtpReceiver;
 class Transport;
 namespace rtcp {
 class TransportFeedback;
 }
 
 class RtpRtcp : public Module {
  public:
@@ skipping 28 matching lines @@
     Clock* clock;
     ReceiveStatistics* receive_statistics;
     Transport* outgoing_transport;
     RtcpIntraFrameObserver* intra_frame_callback;
     RtcpBandwidthObserver* bandwidth_callback;
     TransportFeedbackObserver* transport_feedback_callback;
     RtcpRttStats* rtt_stats;
     RtcpPacketTypeCounterObserver* rtcp_packet_type_counter_observer;
     RtpAudioFeedback* audio_messages;
     RemoteBitrateEstimator* remote_bitrate_estimator;
-    PacedSender* paced_sender;
-    PacketRouter* packet_router;
+    RtpPacketSender* paced_sender;
+    TransportSequenceNumberAllocator* transport_sequence_number_allocator;
     BitrateStatisticsObserver* send_bitrate_observer;
     FrameCountObserver* send_frame_count_observer;
     SendSideDelayObserver* send_side_delay_observer;
   };
 
   /*
    *   Create a RTP/RTCP module object using the system clock.
    *
    *   configuration  - Configuration of the RTP/RTCP module.
    */
@@ skipping 550 matching lines @@
 
     /*
     *   send a request for a keyframe
     *
     *   return -1 on failure else 0
     */
     virtual int32_t RequestKeyFrame() = 0;
 };
 }  // namespace webrtc
 #endif // WEBRTC_MODULES_RTP_RTCP_INTERFACE_RTP_RTCP_H_