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diff --git a/third_party/libwebrtc/api/video/video_adaptation_counters.h b/third_party/libwebrtc/api/video/video_adaptation_counters.h
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+/*
+ *  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 API_VIDEO_VIDEO_ADAPTATION_COUNTERS_H_
+#define API_VIDEO_VIDEO_ADAPTATION_COUNTERS_H_
+
+#include <string>
+
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+
+// Counts the number of adaptations have resulted due to resource overuse.
+// Today we can adapt resolution and fps.
+struct VideoAdaptationCounters {
+  VideoAdaptationCounters() : resolution_adaptations(0), fps_adaptations(0) {}
+  VideoAdaptationCounters(int resolution_adaptations, int fps_adaptations)
+      : resolution_adaptations(resolution_adaptations),
+        fps_adaptations(fps_adaptations) {
+    RTC_DCHECK_GE(resolution_adaptations, 0);
+    RTC_DCHECK_GE(fps_adaptations, 0);
+  }
+
+  int Total() const { return fps_adaptations + resolution_adaptations; }
+
+  bool operator==(const VideoAdaptationCounters& rhs) const;
+  bool operator!=(const VideoAdaptationCounters& rhs) const;
+
+  VideoAdaptationCounters operator+(const VideoAdaptationCounters& other) const;
+
+  std::string ToString() const;
+
+  int resolution_adaptations;
+  int fps_adaptations;
+};
+
+}  // namespace webrtc
+
+#endif  // API_VIDEO_VIDEO_ADAPTATION_COUNTERS_H_