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diff --git a/third_party/libwebrtc/pc/media_factory.h b/third_party/libwebrtc/pc/media_factory.h
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+++ b/third_party/libwebrtc/pc/media_factory.h
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+/*
+ *  Copyright 2023 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 PC_MEDIA_FACTORY_H_
+#define PC_MEDIA_FACTORY_H_
+
+#include <memory>
+
+#include "api/environment/environment.h"
+#include "call/call.h"
+#include "call/call_config.h"
+#include "media/base/media_engine.h"
+
+namespace webrtc {
+
+// PeerConnectionFactoryDependencies is forward declared because of circular
+// dependency between MediaFactory and PeerConnectionFactoryDependencies:
+// PeerConnectionFactoryDependencies keeps an instance of MediaFactory and thus
+// needs to know how to destroy it.
+// MediaFactory mentions PeerConnectionFactoryDependencies in api, but does not
+// need its full definition.
+struct PeerConnectionFactoryDependencies;
+
+// Interface repsponsible for constructing media specific classes for
+// PeerConnectionFactory and PeerConnection.
+class MediaFactory {
+ public:
+  virtual ~MediaFactory() = default;
+
+  virtual std::unique_ptr<Call> CreateCall(const CallConfig& config) = 0;
+  virtual std::unique_ptr<cricket::MediaEngineInterface> CreateMediaEngine(
+      const Environment& env,
+      PeerConnectionFactoryDependencies& dependencies) = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // PC_MEDIA_FACTORY_H_