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diff --git a/third_party/libwebrtc/api/jsep_ice_candidate.h b/third_party/libwebrtc/api/jsep_ice_candidate.h
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+/*
+ *  Copyright 2012 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.
+ */
+
+// TODO(deadbeef): Move this out of api/; it's an implementation detail and
+// shouldn't be used externally.
+
+#ifndef API_JSEP_ICE_CANDIDATE_H_
+#define API_JSEP_ICE_CANDIDATE_H_
+
+#include <stddef.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "api/candidate.h"
+#include "api/jsep.h"
+#include "rtc_base/system/rtc_export.h"
+
+namespace webrtc {
+
+// Implementation of IceCandidateInterface.
+class RTC_EXPORT JsepIceCandidate : public IceCandidateInterface {
+ public:
+  JsepIceCandidate(const std::string& sdp_mid, int sdp_mline_index);
+  JsepIceCandidate(const std::string& sdp_mid,
+                   int sdp_mline_index,
+                   const cricket::Candidate& candidate);
+  JsepIceCandidate(const JsepIceCandidate&) = delete;
+  JsepIceCandidate& operator=(const JsepIceCandidate&) = delete;
+  ~JsepIceCandidate() override;
+  // `err` may be null.
+  bool Initialize(const std::string& sdp, SdpParseError* err);
+  void SetCandidate(const cricket::Candidate& candidate) {
+    candidate_ = candidate;
+  }
+
+  std::string sdp_mid() const override;
+  int sdp_mline_index() const override;
+  const cricket::Candidate& candidate() const override;
+
+  std::string server_url() const override;
+
+  bool ToString(std::string* out) const override;
+
+ private:
+  std::string sdp_mid_;
+  int sdp_mline_index_;
+  cricket::Candidate candidate_;
+};
+
+// Implementation of IceCandidateCollection which stores JsepIceCandidates.
+class JsepCandidateCollection : public IceCandidateCollection {
+ public:
+  JsepCandidateCollection();
+  // Move constructor is defined so that a vector of JsepCandidateCollections
+  // can be resized.
+  JsepCandidateCollection(JsepCandidateCollection&& o);
+
+  JsepCandidateCollection(const JsepCandidateCollection&) = delete;
+  JsepCandidateCollection& operator=(const JsepCandidateCollection&) = delete;
+
+  // Returns a copy of the candidate collection.
+  JsepCandidateCollection Clone() const;
+  size_t count() const override;
+  bool HasCandidate(const IceCandidateInterface* candidate) const override;
+  // Adds and takes ownership of the JsepIceCandidate.
+  // TODO(deadbeef): Make this use an std::unique_ptr<>, so ownership logic is
+  // more clear.
+  virtual void add(JsepIceCandidate* candidate);
+  const IceCandidateInterface* at(size_t index) const override;
+  // Removes the candidate that has a matching address and protocol.
+  //
+  // Returns the number of candidates that were removed.
+  size_t remove(const cricket::Candidate& candidate);
+
+ private:
+  std::vector<std::unique_ptr<JsepIceCandidate>> candidates_;
+};
+
+}  // namespace webrtc
+
+#endif  // API_JSEP_ICE_CANDIDATE_H_