diff --git a/audio/audio_send_stream.cc b/audio/audio_send_stream.cc
index e86667d..3fd8a8a 100644
--- a/audio/audio_send_stream.cc
+++ b/audio/audio_send_stream.cc
@@ -296,8 +296,8 @@
     channel_send_->GetRtpRtcp()->DeregisterSendRtpHeaderExtension(
         kRtpExtensionAbsoluteSendTime);
     if (new_ids.abs_send_time) {
-      channel_send_->GetRtpRtcp()->RegisterSendRtpHeaderExtension(
-          kRtpExtensionAbsoluteSendTime, new_ids.abs_send_time);
+      rtp_rtcp_module_->RegisterRtpHeaderExtension(AbsoluteSendTime::kUri,
+                                                   new_ids.abs_send_time);
     }
   }
 
diff --git a/audio/channel_send.cc b/audio/channel_send.cc
index f803bf9..569615b 100644
--- a/audio/channel_send.cc
+++ b/audio/channel_send.cc
@@ -189,7 +189,7 @@
   void OnUplinkPacketLossRate(float packet_loss_rate);
   bool InputMute() const;
 
-  int SetSendRtpHeaderExtension(bool enable, RTPExtensionType type, int id);
+  void SetSendRtpHeaderExtension(bool enable, absl::string_view uri, int id);
 
   int32_t SendRtpAudio(AudioFrameType frameType,
                        uint8_t payloadType,
@@ -894,22 +894,18 @@
                          int repaired_extension_id) {
   RTC_DCHECK_RUN_ON(&worker_thread_checker_);
   if (extension_id != 0) {
-    int ret = SetSendRtpHeaderExtension(!rid.empty(), kRtpExtensionRtpStreamId,
-                                        extension_id);
-    RTC_DCHECK_EQ(0, ret);
+    SetSendRtpHeaderExtension(!rid.empty(), RtpStreamId::kUri, extension_id);
   }
   if (repaired_extension_id != 0) {
-    int ret = SetSendRtpHeaderExtension(!rid.empty(), kRtpExtensionRtpStreamId,
-                                        repaired_extension_id);
-    RTC_DCHECK_EQ(0, ret);
+    SetSendRtpHeaderExtension(!rid.empty(), RtpStreamId::kUri,
+                              repaired_extension_id);
   }
   _rtpRtcpModule->SetRid(rid);
 }
 
 void ChannelSend::SetMid(const std::string& mid, int extension_id) {
   RTC_DCHECK_RUN_ON(&worker_thread_checker_);
-  int ret = SetSendRtpHeaderExtension(true, kRtpExtensionMid, extension_id);
-  RTC_DCHECK_EQ(0, ret);
+  SetSendRtpHeaderExtension(true, RtpMid::kUri, extension_id);
   _rtpRtcpModule->SetMid(mid);
 }
 
@@ -921,15 +917,12 @@
 void ChannelSend::SetSendAudioLevelIndicationStatus(bool enable, int id) {
   RTC_DCHECK_RUN_ON(&worker_thread_checker_);
   _includeAudioLevelIndication = enable;
-  int ret = SetSendRtpHeaderExtension(enable, kRtpExtensionAudioLevel, id);
-  RTC_DCHECK_EQ(0, ret);
+  SetSendRtpHeaderExtension(enable, AudioLevel::kUri, id);
 }
 
 void ChannelSend::EnableSendTransportSequenceNumber(int id) {
   RTC_DCHECK_RUN_ON(&worker_thread_checker_);
-  int ret =
-      SetSendRtpHeaderExtension(true, kRtpExtensionTransportSequenceNumber, id);
-  RTC_DCHECK_EQ(0, ret);
+  SetSendRtpHeaderExtension(true, TransportSequenceNumber::kUri, id);
 }
 
 void ChannelSend::RegisterSenderCongestionControlObjects(
@@ -1093,18 +1086,13 @@
   return _rtpRtcpModule.get();
 }
 
-int ChannelSend::SetSendRtpHeaderExtension(bool enable,
-                                           RTPExtensionType type,
-                                           int id) {
-  int error = 0;
-  _rtpRtcpModule->DeregisterSendRtpHeaderExtension(type);
+void ChannelSend::SetSendRtpHeaderExtension(bool enable,
+                                            absl::string_view uri,
+                                            int id) {
+  _rtpRtcpModule->DeregisterSendRtpHeaderExtension(uri);
   if (enable) {
-    // TODO(nisse): RtpRtcp::RegisterSendRtpHeaderExtension to take an int
-    // argument. Currently it wants an uint8_t.
-    error = _rtpRtcpModule->RegisterSendRtpHeaderExtension(
-        type, rtc::dchecked_cast<uint8_t>(id));
+    _rtpRtcpModule->RegisterRtpHeaderExtension(uri, id);
   }
-  return error;
 }
 
 int64_t ChannelSend::GetRTT() const {
diff --git a/call/rtp_video_sender.cc b/call/rtp_video_sender.cc
index 73e356d..2b2a0a0 100644
--- a/call/rtp_video_sender.cc
+++ b/call/rtp_video_sender.cc
@@ -381,7 +381,7 @@
     int id = rtp_config_.extensions[i].id;
     RTC_DCHECK(RtpExtension::IsSupportedForVideo(extension));
     for (const RtpStreamSender& stream : rtp_streams_) {
-      RTC_CHECK(stream.rtp_rtcp->RegisterRtpHeaderExtension(extension, id));
+      stream.rtp_rtcp->RegisterRtpHeaderExtension(extension, id);
     }
   }
 
diff --git a/modules/rtp_rtcp/include/rtp_header_extension_map.h b/modules/rtp_rtcp/include/rtp_header_extension_map.h
index e945ce8..360a619 100644
--- a/modules/rtp_rtcp/include/rtp_header_extension_map.h
+++ b/modules/rtp_rtcp/include/rtp_header_extension_map.h
@@ -37,7 +37,7 @@
     return Register(id, Extension::kId, Extension::kUri);
   }
   bool RegisterByType(int id, RTPExtensionType type);
-  bool RegisterByUri(int id, const std::string& uri);
+  bool RegisterByUri(int id, absl::string_view uri);
 
   bool IsRegistered(RTPExtensionType type) const {
     return GetId(type) != kInvalidId;
@@ -56,6 +56,7 @@
     return RegisterByType(id, type) ? 0 : -1;
   }
   int32_t Deregister(RTPExtensionType type);
+  void Deregister(absl::string_view uri);
 
   // Corresponds to the SDP attribute extmap-allow-mixed, see RFC8285.
   // Set to true if it's allowed to mix one- and two-byte RTP header extensions
diff --git a/modules/rtp_rtcp/include/rtp_rtcp.h b/modules/rtp_rtcp/include/rtp_rtcp.h
index 69ca8f8..efb216e 100644
--- a/modules/rtp_rtcp/include/rtp_rtcp.h
+++ b/modules/rtp_rtcp/include/rtp_rtcp.h
@@ -164,12 +164,14 @@
 
   // (De)registers RTP header extension type and id.
   // Returns -1 on failure else 0.
-  virtual int32_t RegisterSendRtpHeaderExtension(RTPExtensionType type,
-                                                 uint8_t id) = 0;
-  // Register extension by uri, returns false on failure.
-  virtual bool RegisterRtpHeaderExtension(const std::string& uri, int id) = 0;
+  RTC_DEPRECATED virtual int32_t RegisterSendRtpHeaderExtension(
+      RTPExtensionType type,
+      uint8_t id) = 0;
+  // Register extension by uri, triggers CHECK on falure.
+  virtual void RegisterRtpHeaderExtension(absl::string_view uri, int id) = 0;
 
   virtual int32_t DeregisterSendRtpHeaderExtension(RTPExtensionType type) = 0;
+  virtual void DeregisterSendRtpHeaderExtension(absl::string_view uri) = 0;
 
   // Returns true if RTP module is send media, and any of the extensions
   // required for bandwidth estimation is registered.
diff --git a/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h b/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h
index bf280f3..3b64de7 100644
--- a/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h
+++ b/modules/rtp_rtcp/mocks/mock_rtp_rtcp.h
@@ -45,10 +45,10 @@
   MOCK_METHOD1(SetExtmapAllowMixed, void(bool extmap_allow_mixed));
   MOCK_METHOD2(RegisterSendRtpHeaderExtension,
                int32_t(RTPExtensionType type, uint8_t id));
-  MOCK_METHOD2(RegisterRtpHeaderExtension,
-               bool(const std::string& uri, int id));
+  MOCK_METHOD2(RegisterRtpHeaderExtension, void(absl::string_view uri, int id));
   MOCK_METHOD1(DeregisterSendRtpHeaderExtension,
                int32_t(RTPExtensionType type));
+  MOCK_METHOD1(DeregisterSendRtpHeaderExtension, void(absl::string_view uri));
   MOCK_CONST_METHOD0(SupportsPadding, bool());
   MOCK_CONST_METHOD0(SupportsRtxPayloadPadding, bool());
   MOCK_CONST_METHOD0(StartTimestamp, uint32_t());
diff --git a/modules/rtp_rtcp/source/rtp_header_extension_map.cc b/modules/rtp_rtcp/source/rtp_header_extension_map.cc
index 3ff6f45..dbcdff6 100644
--- a/modules/rtp_rtcp/source/rtp_header_extension_map.cc
+++ b/modules/rtp_rtcp/source/rtp_header_extension_map.cc
@@ -85,7 +85,7 @@
   return false;
 }
 
-bool RtpHeaderExtensionMap::RegisterByUri(int id, const std::string& uri) {
+bool RtpHeaderExtensionMap::RegisterByUri(int id, absl::string_view uri) {
   for (const ExtensionInfo& extension : kExtensions)
     if (uri == extension.uri)
       return Register(id, extension.type, extension.uri);
@@ -113,6 +113,15 @@
   return 0;
 }
 
+void RtpHeaderExtensionMap::Deregister(absl::string_view uri) {
+  for (const ExtensionInfo& extension : kExtensions) {
+    if (extension.uri == uri) {
+      ids_[extension.type] = kInvalidId;
+      break;
+    }
+  }
+}
+
 bool RtpHeaderExtensionMap::Register(int id,
                                      RTPExtensionType type,
                                      const char* uri) {
diff --git a/modules/rtp_rtcp/source/rtp_rtcp_impl.cc b/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
index 7d8e338..b96a56c 100644
--- a/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
+++ b/modules/rtp_rtcp/source/rtp_rtcp_impl.cc
@@ -538,15 +538,20 @@
   return rtp_sender_->RegisterRtpHeaderExtension(type, id);
 }
 
-bool ModuleRtpRtcpImpl::RegisterRtpHeaderExtension(const std::string& uri,
+void ModuleRtpRtcpImpl::RegisterRtpHeaderExtension(absl::string_view uri,
                                                    int id) {
-  return rtp_sender_->RegisterRtpHeaderExtension(uri, id);
+  bool registered = rtp_sender_->RegisterRtpHeaderExtension(uri, id);
+  RTC_CHECK(registered);
 }
 
 int32_t ModuleRtpRtcpImpl::DeregisterSendRtpHeaderExtension(
     const RTPExtensionType type) {
   return rtp_sender_->DeregisterRtpHeaderExtension(type);
 }
+void ModuleRtpRtcpImpl::DeregisterSendRtpHeaderExtension(
+    absl::string_view uri) {
+  rtp_sender_->DeregisterRtpHeaderExtension(uri);
+}
 
 // (TMMBR) Temporary Max Media Bit Rate.
 bool ModuleRtpRtcpImpl::TMMBR() const {
diff --git a/modules/rtp_rtcp/source/rtp_rtcp_impl.h b/modules/rtp_rtcp/source/rtp_rtcp_impl.h
index 9ec481c..2793945 100644
--- a/modules/rtp_rtcp/source/rtp_rtcp_impl.h
+++ b/modules/rtp_rtcp/source/rtp_rtcp_impl.h
@@ -71,9 +71,9 @@
   // Register RTP header extension.
   int32_t RegisterSendRtpHeaderExtension(RTPExtensionType type,
                                          uint8_t id) override;
-  bool RegisterRtpHeaderExtension(const std::string& uri, int id) override;
-
+  void RegisterRtpHeaderExtension(absl::string_view uri, int id) override;
   int32_t DeregisterSendRtpHeaderExtension(RTPExtensionType type) override;
+  void DeregisterSendRtpHeaderExtension(absl::string_view uri) override;
 
   bool SupportsPadding() const override;
   bool SupportsRtxPayloadPadding() const override;
diff --git a/modules/rtp_rtcp/source/rtp_sender.cc b/modules/rtp_rtcp/source/rtp_sender.cc
index c88e0e2..9c3dbd6 100644
--- a/modules/rtp_rtcp/source/rtp_sender.cc
+++ b/modules/rtp_rtcp/source/rtp_sender.cc
@@ -227,7 +227,7 @@
   return registered ? 0 : -1;
 }
 
-bool RTPSender::RegisterRtpHeaderExtension(const std::string& uri, int id) {
+bool RTPSender::RegisterRtpHeaderExtension(absl::string_view uri, int id) {
   rtc::CritScope lock(&send_critsect_);
   bool registered = rtp_header_extension_map_.RegisterByUri(id, uri);
   supports_bwe_extension_ = HasBweExtension(rtp_header_extension_map_);
@@ -246,6 +246,12 @@
   return deregistered;
 }
 
+void RTPSender::DeregisterRtpHeaderExtension(absl::string_view uri) {
+  rtc::CritScope lock(&send_critsect_);
+  rtp_header_extension_map_.Deregister(uri);
+  supports_bwe_extension_ = HasBweExtension(rtp_header_extension_map_);
+}
+
 void RTPSender::SetMaxRtpPacketSize(size_t max_packet_size) {
   RTC_DCHECK_GE(max_packet_size, 100);
   RTC_DCHECK_LE(max_packet_size, IP_PACKET_SIZE);
diff --git a/modules/rtp_rtcp/source/rtp_sender.h b/modules/rtp_rtcp/source/rtp_sender.h
index d0a8396..5489217 100644
--- a/modules/rtp_rtcp/source/rtp_sender.h
+++ b/modules/rtp_rtcp/source/rtp_sender.h
@@ -85,9 +85,10 @@
 
   // RTP header extension
   int32_t RegisterRtpHeaderExtension(RTPExtensionType type, uint8_t id);
-  bool RegisterRtpHeaderExtension(const std::string& uri, int id);
+  bool RegisterRtpHeaderExtension(absl::string_view uri, int id);
   bool IsRtpHeaderExtensionRegistered(RTPExtensionType type) const;
   int32_t DeregisterRtpHeaderExtension(RTPExtensionType type);
+  void DeregisterRtpHeaderExtension(absl::string_view uri);
 
   // Tries to send packet to transport. Also updates any timing extensions,
   // calls observers waiting for packet send events, and updates stats.