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diff --git a/third_party/libwebrtc/api/task_queue/task_queue_factory.h b/third_party/libwebrtc/api/task_queue/task_queue_factory.h
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+++ b/third_party/libwebrtc/api/task_queue/task_queue_factory.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 API_TASK_QUEUE_TASK_QUEUE_FACTORY_H_
+#define API_TASK_QUEUE_TASK_QUEUE_FACTORY_H_
+
+#include <memory>
+
+#include "absl/strings/string_view.h"
+#include "api/task_queue/task_queue_base.h"
+
+namespace webrtc {
+
+// The implementation of this interface must be thread-safe.
+class TaskQueueFactory {
+ public:
+  // TaskQueue priority levels. On some platforms these will map to thread
+  // priorities, on others such as Mac and iOS, GCD queue priorities.
+  enum class Priority { NORMAL = 0, HIGH, LOW };
+
+  virtual ~TaskQueueFactory() = default;
+  virtual std::unique_ptr<TaskQueueBase, TaskQueueDeleter> CreateTaskQueue(
+      absl::string_view name,
+      Priority priority) const = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TASK_QUEUE_TASK_QUEUE_FACTORY_H_