diff --git a/pc/peer_connection.cc b/pc/peer_connection.cc
index 26b70c63db..ad0a148f06 100644
--- a/pc/peer_connection.cc
+++ b/pc/peer_connection.cc
@@ -1031,18 +1031,6 @@ PeerConnection::AddTransceiver(
   return AddTransceiver(track, RtpTransceiverInit());
 }
 
-RtpTransportInternal* PeerConnection::GetRtpTransport(const std::string& mid) {
-  // TODO(bugs.webrtc.org/9987): Avoid the thread jump.
-  // This might be done by caching the value on the signaling thread.
-  RTC_DCHECK_RUN_ON(signaling_thread());
-  return network_thread()->BlockingCall([this, &mid] {
-    RTC_DCHECK_RUN_ON(network_thread());
-    auto rtp_transport = transport_controller_->GetRtpTransport(mid);
-    RTC_DCHECK(rtp_transport);
-    return rtp_transport;
-  });
-}
-
 RTCErrorOr<rtc::scoped_refptr<RtpTransceiverInterface>>
 PeerConnection::AddTransceiver(
     rtc::scoped_refptr<MediaStreamTrackInterface> track,
diff --git a/pc/peer_connection.h b/pc/peer_connection.h
index e6037a2698..406bc1cef2 100644
--- a/pc/peer_connection.h
+++ b/pc/peer_connection.h
@@ -417,9 +417,6 @@ class PeerConnection : public PeerConnectionInternal,
       const RtpTransceiverInit& init,
       bool fire_callback = true) override;
 
-  // Returns rtp transport, result can not be nullptr.
-  RtpTransportInternal* GetRtpTransport(const std::string& mid);
-
   // Returns true if SRTP (either using DTLS-SRTP or SDES) is required by
   // this session.
   bool SrtpRequired() const override;