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diff --git a/third_party/libwebrtc/video/config/encoder_stream_factory.h b/third_party/libwebrtc/video/config/encoder_stream_factory.h
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+++ b/third_party/libwebrtc/video/config/encoder_stream_factory.h
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+/*
+ *  Copyright (c) 2022 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 VIDEO_CONFIG_ENCODER_STREAM_FACTORY_H_
+#define VIDEO_CONFIG_ENCODER_STREAM_FACTORY_H_
+
+#include <string>
+#include <vector>
+
+#include "api/transport/field_trial_based_config.h"
+#include "api/units/data_rate.h"
+#include "api/video_codecs/video_encoder.h"
+#include "call/adaptation/video_source_restrictions.h"
+#include "video/config/video_encoder_config.h"
+
+namespace cricket {
+
+class EncoderStreamFactory
+    : public webrtc::VideoEncoderConfig::VideoStreamFactoryInterface {
+ public:
+  // Note: this constructor is used by testcase in downstream.
+  EncoderStreamFactory(std::string codec_name,
+                       int max_qp,
+                       bool is_screenshare,
+                       bool conference_mode);
+
+  EncoderStreamFactory(std::string codec_name,
+                       int max_qp,
+                       bool is_screenshare,
+                       bool conference_mode,
+                       const webrtc::VideoEncoder::EncoderInfo& encoder_info,
+                       absl::optional<webrtc::VideoSourceRestrictions>
+                           restrictions = absl::nullopt,
+                       const webrtc::FieldTrialsView* trials = nullptr);
+
+  std::vector<webrtc::VideoStream> CreateEncoderStreams(
+      int width,
+      int height,
+      const webrtc::VideoEncoderConfig& encoder_config) override;
+
+ private:
+  std::vector<webrtc::VideoStream> CreateDefaultVideoStreams(
+      int width,
+      int height,
+      const webrtc::VideoEncoderConfig& encoder_config,
+      const absl::optional<webrtc::DataRate>& experimental_min_bitrate) const;
+
+  std::vector<webrtc::VideoStream>
+  CreateSimulcastOrConferenceModeScreenshareStreams(
+      int width,
+      int height,
+      const webrtc::VideoEncoderConfig& encoder_config,
+      const absl::optional<webrtc::DataRate>& experimental_min_bitrate) const;
+
+  webrtc::Resolution GetLayerResolutionFromRequestedResolution(
+      int in_frame_width,
+      int in_frame_height,
+      webrtc::Resolution requested_resolution) const;
+
+  const std::string codec_name_;
+  const int max_qp_;
+  const bool is_screenshare_;
+  // Allows a screenshare specific configuration, which enables temporal
+  // layering and various settings.
+  const bool conference_mode_;
+  const webrtc::FieldTrialBasedConfig fallback_trials_;
+  const webrtc::FieldTrialsView& trials_;
+  const int encoder_info_requested_resolution_alignment_;
+  const absl::optional<webrtc::VideoSourceRestrictions> restrictions_;
+};
+
+}  // namespace cricket
+
+#endif  // VIDEO_CONFIG_ENCODER_STREAM_FACTORY_H_