Move RemoteBitrateEstimator::RemoveStream calls from receive streams to Call.

webrtc/video/rtp_stream_receiver.h

Index: webrtc/video/rtp_stream_receiver.h
diff --git a/webrtc/video/rtp_stream_receiver.h b/webrtc/video/rtp_stream_receiver.h
index b82539e3ca0ce2111962646acc8f8317141038d4..dd217899f2d7914361ae8488115cce69ccf67089 100644
--- a/webrtc/video/rtp_stream_receiver.h
+++ b/webrtc/video/rtp_stream_receiver.h
@@ -41,7 +41,6 @@ class PacketRouter;
 class ProcessThread;
 class ReceiveStatistics;
 class ReceiveStatisticsProxy;
-class RemoteBitrateEstimator;
 class RemoteNtpTimeEstimator;
 class RtcpRttStats;
 class RtpHeaderParser;
@@ -66,7 +65,6 @@ class RtpStreamReceiver : public RtpData,
  public:
   RtpStreamReceiver(
       vcm::VideoReceiver* video_receiver,
-      RemoteBitrateEstimator* remote_bitrate_estimator,
       Transport* transport,
       RtcpRttStats* rtt_stats,
       PacketRouter* packet_router,
@@ -163,7 +161,6 @@ class RtpStreamReceiver : public RtpData,
   // Ownership of this object lies with VideoReceiveStream, which owns |this|.
   const VideoReceiveStream::Config& config_;
   vcm::VideoReceiver* const video_receiver_;
-  RemoteBitrateEstimator* const remote_bitrate_estimator_;
   PacketRouter* const packet_router_;
   VieRemb* const remb_;
   ProcessThread* const process_thread_;