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diff --git a/third_party/libwebrtc/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.h b/third_party/libwebrtc/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.h
new file mode 100644
index 0000000000..20f9a5caa9
--- /dev/null
+++ b/third_party/libwebrtc/modules/rtp_rtcp/source/rtp_video_stream_receiver_frame_transformer_delegate.h
@@ -0,0 +1,76 @@
+/*
+ *  Copyright (c) 2020 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 MODULES_RTP_RTCP_SOURCE_RTP_VIDEO_STREAM_RECEIVER_FRAME_TRANSFORMER_DELEGATE_H_
+#define MODULES_RTP_RTCP_SOURCE_RTP_VIDEO_STREAM_RECEIVER_FRAME_TRANSFORMER_DELEGATE_H_
+
+#include <memory>
+
+#include "api/frame_transformer_interface.h"
+#include "api/sequence_checker.h"
+#include "modules/rtp_rtcp/source/frame_object.h"
+#include "rtc_base/system/no_unique_address.h"
+#include "rtc_base/thread.h"
+#include "system_wrappers/include/clock.h"
+
+namespace webrtc {
+
+// Called back by RtpVideoStreamReceiverFrameTransformerDelegate on the network
+// thread after transformation.
+class RtpVideoFrameReceiver {
+ public:
+  virtual void ManageFrame(std::unique_ptr<RtpFrameObject> frame) = 0;
+
+ protected:
+  virtual ~RtpVideoFrameReceiver() = default;
+};
+
+// Delegates calls to FrameTransformerInterface to transform frames, and to
+// RtpVideoStreamReceiver to manage transformed frames on the `network_thread_`.
+class RtpVideoStreamReceiverFrameTransformerDelegate
+    : public TransformedFrameCallback {
+ public:
+  RtpVideoStreamReceiverFrameTransformerDelegate(
+      RtpVideoFrameReceiver* receiver,
+      Clock* clock,
+      rtc::scoped_refptr<FrameTransformerInterface> frame_transformer,
+      TaskQueueBase* network_thread, uint32_t ssrc);
+
+  void Init();
+  void Reset();
+
+  // Delegates the call to FrameTransformerInterface::TransformFrame.
+  void TransformFrame(std::unique_ptr<RtpFrameObject> frame);
+
+  // Implements TransformedFrameCallback. Can be called on any thread. Posts
+  // the transformed frame to be managed on the `network_thread_`.
+  void OnTransformedFrame(
+      std::unique_ptr<TransformableFrameInterface> frame) override;
+
+  // Delegates the call to RtpVideoFrameReceiver::ManageFrame on the
+  // `network_thread_`.
+  void ManageFrame(std::unique_ptr<TransformableFrameInterface> frame);
+
+ protected:
+  ~RtpVideoStreamReceiverFrameTransformerDelegate() override = default;
+
+ private:
+  RTC_NO_UNIQUE_ADDRESS SequenceChecker network_sequence_checker_;
+  RtpVideoFrameReceiver* receiver_ RTC_GUARDED_BY(network_sequence_checker_);
+  rtc::scoped_refptr<FrameTransformerInterface> frame_transformer_
+      RTC_GUARDED_BY(network_sequence_checker_);
+  TaskQueueBase* const network_thread_;
+  const uint32_t ssrc_;
+  Clock* const clock_;
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_RTP_RTCP_SOURCE_RTP_VIDEO_STREAM_RECEIVER_FRAME_TRANSFORMER_DELEGATE_H_