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diff --git a/third_party/libwebrtc/p2p/base/connection_info.h b/third_party/libwebrtc/p2p/base/connection_info.h
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+++ b/third_party/libwebrtc/p2p/base/connection_info.h
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+/*
+ *  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_CONNECTION_INFO_H_
+#define P2P_BASE_CONNECTION_INFO_H_
+
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/candidate.h"
+#include "api/units/timestamp.h"
+
+namespace cricket {
+
+// States are from RFC 5245. http://tools.ietf.org/html/rfc5245#section-5.7.4
+enum class IceCandidatePairState {
+  WAITING = 0,  // Check has not been performed, Waiting pair on CL.
+  IN_PROGRESS,  // Check has been sent, transaction is in progress.
+  SUCCEEDED,    // Check already done, produced a successful result.
+  FAILED,       // Check for this connection failed.
+  // According to spec there should also be a frozen state, but nothing is ever
+  // frozen because we have not implemented ICE freezing logic.
+};
+
+// Stats that we can return about the connections for a transport channel.
+// TODO(hta): Rename to ConnectionStats
+struct ConnectionInfo {
+  ConnectionInfo();
+  ConnectionInfo(const ConnectionInfo&);
+  ~ConnectionInfo();
+
+  bool best_connection;      // Is this the best connection we have?
+  bool writable;             // Has this connection received a STUN response?
+  bool receiving;            // Has this connection received anything?
+  bool timeout;              // Has this connection timed out?
+  size_t rtt;                // The STUN RTT for this connection.
+  size_t sent_discarded_bytes;  // Number of outgoing bytes discarded due to
+                                // socket errors.
+  size_t sent_total_bytes;      // Total bytes sent on this connection. Does not
+                                // include discarded bytes.
+  size_t sent_bytes_second;  // Bps over the last measurement interval.
+  size_t sent_discarded_packets;  // Number of outgoing packets discarded due to
+                                  // socket errors.
+  size_t sent_total_packets;  // Number of total outgoing packets attempted for
+                              // sending, including discarded packets.
+  size_t sent_ping_requests_total;  // Number of STUN ping request sent.
+  size_t sent_ping_requests_before_first_response;  // Number of STUN ping
+  // sent before receiving the first response.
+  size_t sent_ping_responses;  // Number of STUN ping response sent.
+
+  size_t recv_total_bytes;     // Total bytes received on this connection.
+  size_t recv_bytes_second;    // Bps over the last measurement interval.
+  size_t packets_received;     // Number of packets that were received.
+  size_t recv_ping_requests;   // Number of STUN ping request received.
+  size_t recv_ping_responses;  // Number of STUN ping response received.
+  Candidate local_candidate;   // The local candidate for this connection.
+  Candidate remote_candidate;  // The remote candidate for this connection.
+  void* key;                   // A static value that identifies this conn.
+  // https://w3c.github.io/webrtc-stats/#dom-rtcicecandidatepairstats-state
+  IceCandidatePairState state;
+  // https://w3c.github.io/webrtc-stats/#dom-rtcicecandidatepairstats-priority
+  uint64_t priority;
+  // https://w3c.github.io/webrtc-stats/#dom-rtcicecandidatepairstats-nominated
+  bool nominated;
+  // https://w3c.github.io/webrtc-stats/#dom-rtcicecandidatepairstats-totalroundtriptime
+  uint64_t total_round_trip_time_ms;
+  // https://w3c.github.io/webrtc-stats/#dom-rtcicecandidatepairstats-currentroundtriptime
+  absl::optional<uint32_t> current_round_trip_time_ms;
+
+  // https://w3c.github.io/webrtc-stats/#dom-rtcicecandidatepairstats-lastpacketreceivedtimestamp
+  absl::optional<webrtc::Timestamp> last_data_received;
+  absl::optional<webrtc::Timestamp> last_data_sent;
+};
+
+// Information about all the candidate pairs of a channel.
+typedef std::vector<ConnectionInfo> ConnectionInfos;
+
+}  // namespace cricket
+
+#endif  // P2P_BASE_CONNECTION_INFO_H_