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diff --git a/third_party/libwebrtc/pc/data_channel_utils.h b/third_party/libwebrtc/pc/data_channel_utils.h
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+++ b/third_party/libwebrtc/pc/data_channel_utils.h
@@ -0,0 +1,62 @@
+/*
+ *  Copyright 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 PC_DATA_CHANNEL_UTILS_H_
+#define PC_DATA_CHANNEL_UTILS_H_
+
+#include <stddef.h>
+#include <stdint.h>
+#include <deque>
+#include <memory>
+#include <string>
+#include <utility>
+
+#include "api/data_channel_interface.h"
+#include "media/base/media_engine.h"
+
+namespace webrtc {
+
+// A packet queue which tracks the total queued bytes. Queued packets are
+// owned by this class.
+class PacketQueue final {
+ public:
+  size_t byte_count() const { return byte_count_; }
+
+  bool Empty() const;
+
+  std::unique_ptr<DataBuffer> PopFront();
+
+  void PushFront(std::unique_ptr<DataBuffer> packet);
+  void PushBack(std::unique_ptr<DataBuffer> packet);
+
+  void Clear();
+
+  void Swap(PacketQueue* other);
+
+ private:
+  std::deque<std::unique_ptr<DataBuffer>> packets_;
+  size_t byte_count_ = 0;
+};
+
+struct DataChannelStats {
+  int internal_id;
+  int id;
+  std::string label;
+  std::string protocol;
+  DataChannelInterface::DataState state;
+  uint32_t messages_sent;
+  uint32_t messages_received;
+  uint64_t bytes_sent;
+  uint64_t bytes_received;
+};
+
+}  // namespace webrtc
+
+#endif  // PC_DATA_CHANNEL_UTILS_H_