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diff --git a/third_party/libwebrtc/p2p/base/default_ice_transport_factory.h b/third_party/libwebrtc/p2p/base/default_ice_transport_factory.h
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+++ b/third_party/libwebrtc/p2p/base/default_ice_transport_factory.h
@@ -0,0 +1,58 @@
+/*
+ *  Copyright 2019 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 P2P_BASE_DEFAULT_ICE_TRANSPORT_FACTORY_H_
+#define P2P_BASE_DEFAULT_ICE_TRANSPORT_FACTORY_H_
+
+#include <memory>
+#include <string>
+
+#include "api/ice_transport_interface.h"
+#include "p2p/base/p2p_transport_channel.h"
+#include "rtc_base/thread.h"
+
+namespace webrtc {
+
+// The default ICE transport wraps the implementation of IceTransportInternal
+// provided by P2PTransportChannel. This default transport is not thread safe
+// and must be constructed, used and destroyed on the same network thread on
+// which the internal P2PTransportChannel lives.
+class DefaultIceTransport : public IceTransportInterface {
+ public:
+  explicit DefaultIceTransport(
+      std::unique_ptr<cricket::P2PTransportChannel> internal);
+  ~DefaultIceTransport();
+
+  cricket::IceTransportInternal* internal() override {
+    RTC_DCHECK_RUN_ON(&thread_checker_);
+    return internal_.get();
+  }
+
+ private:
+  const SequenceChecker thread_checker_{};
+  std::unique_ptr<cricket::P2PTransportChannel> internal_
+      RTC_GUARDED_BY(thread_checker_);
+};
+
+class DefaultIceTransportFactory : public IceTransportFactory {
+ public:
+  DefaultIceTransportFactory() = default;
+  ~DefaultIceTransportFactory() = default;
+
+  // Must be called on the network thread and returns a DefaultIceTransport.
+  rtc::scoped_refptr<IceTransportInterface> CreateIceTransport(
+      const std::string& transport_name,
+      int component,
+      IceTransportInit init) override;
+};
+
+}  // namespace webrtc
+
+#endif  // P2P_BASE_DEFAULT_ICE_TRANSPORT_FACTORY_H_