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diff --git a/third_party/libwebrtc/api/video/video_bitrate_allocator.h b/third_party/libwebrtc/api/video/video_bitrate_allocator.h
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+++ b/third_party/libwebrtc/api/video/video_bitrate_allocator.h
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+/*
+ *  Copyright (c) 2016 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_BITRATE_ALLOCATOR_H_
+#define API_VIDEO_VIDEO_BITRATE_ALLOCATOR_H_
+
+#include "api/units/data_rate.h"
+#include "api/video/video_bitrate_allocation.h"
+
+namespace webrtc {
+
+struct VideoBitrateAllocationParameters {
+  VideoBitrateAllocationParameters(uint32_t total_bitrate_bps,
+                                   uint32_t framerate);
+  VideoBitrateAllocationParameters(DataRate total_bitrate, double framerate);
+  VideoBitrateAllocationParameters(DataRate total_bitrate,
+                                   DataRate stable_bitrate,
+                                   double framerate);
+  ~VideoBitrateAllocationParameters();
+
+  DataRate total_bitrate;
+  DataRate stable_bitrate;
+  double framerate;
+};
+
+class VideoBitrateAllocator {
+ public:
+  VideoBitrateAllocator() {}
+  virtual ~VideoBitrateAllocator() {}
+
+  virtual VideoBitrateAllocation GetAllocation(uint32_t total_bitrate_bps,
+                                               uint32_t framerate);
+
+  virtual VideoBitrateAllocation Allocate(
+      VideoBitrateAllocationParameters parameters);
+
+  // Deprecated: Only used to work around issues with the legacy conference
+  // screenshare mode and shouldn't be needed by any subclasses.
+  virtual void SetLegacyConferenceMode(bool enabled);
+};
+
+class VideoBitrateAllocationObserver {
+ public:
+  VideoBitrateAllocationObserver() {}
+  virtual ~VideoBitrateAllocationObserver() {}
+
+  virtual void OnBitrateAllocationUpdated(
+      const VideoBitrateAllocation& allocation) = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // API_VIDEO_VIDEO_BITRATE_ALLOCATOR_H_