Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

124 files changed, 11204 insertions, 0 deletions

diff --git a/third_party/libwebrtc/api/test/DEPS b/third_party/libwebrtc/api/test/DEPS
new file mode 100644
index 0000000000..270b274c5f
--- /dev/null
+++ b/third_party/libwebrtc/api/test/DEPS
@@ -0,0 +1,39 @@
+specific_include_rules = {
+  ".*": [
+    "+modules/video_coding",
+  ],
+  ".*": [
+    "+video"
+  ],
+  "dummy_peer_connection\.h": [
+    "+rtc_base/ref_counted_object.h",
+  ],
+  "neteq_factory_with_codecs\.h": [
+    "+system_wrappers/include/clock.h",
+  ],
+  "network_emulation_manager\.h": [
+    "+rtc_base/thread.h",
+    "+rtc_base/network.h",
+    "+rtc_base/network_constants.h",
+  ],
+  "peer_network_dependencies\.h": [
+    "+rtc_base/network.h",
+    "+rtc_base/thread.h",
+  ],
+  "peerconnection_quality_test_fixture\.h": [
+    "+logging/rtc_event_log/rtc_event_log_factory_interface.h",
+    "+rtc_base/network.h",
+    "+rtc_base/rtc_certificate_generator.h",
+    "+rtc_base/ssl_certificate.h",
+    "+rtc_base/thread.h",
+    "+media/base/media_constants.h",
+    "+modules/audio_processing/include/audio_processing.h",
+  ],
+  "time_controller\.h": [
+    "+rtc_base/synchronization/yield_policy.h",
+    "+system_wrappers/include/clock.h",
+  ],
+  "create_frame_generator\.h": [
+    "+system_wrappers/include/clock.h",
+  ],
+}
diff --git a/third_party/libwebrtc/api/test/OWNERS b/third_party/libwebrtc/api/test/OWNERS
new file mode 100644
index 0000000000..a7392abe31
--- /dev/null
+++ b/third_party/libwebrtc/api/test/OWNERS
@@ -0,0 +1,5 @@
+mbonadei@webrtc.org
+sprang@webrtc.org
+srte@webrtc.org
+titovartem@webrtc.org
+
diff --git a/third_party/libwebrtc/api/test/audio_quality_analyzer_interface.h b/third_party/libwebrtc/api/test/audio_quality_analyzer_interface.h
new file mode 100644
index 0000000000..2eb7817445
--- /dev/null
+++ b/third_party/libwebrtc/api/test/audio_quality_analyzer_interface.h
@@ -0,0 +1,44 @@
+/*
+ *  Copyright (c) 2018 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_TEST_AUDIO_QUALITY_ANALYZER_INTERFACE_H_
+#define API_TEST_AUDIO_QUALITY_ANALYZER_INTERFACE_H_
+
+#include <string>
+
+#include "api/test/stats_observer_interface.h"
+#include "api/test/track_id_stream_info_map.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// API is in development. Can be changed/removed without notice.
+class AudioQualityAnalyzerInterface : public StatsObserverInterface {
+ public:
+  ~AudioQualityAnalyzerInterface() override = default;
+
+  // Will be called by the framework before the test.
+  // `test_case_name` is name of test case, that should be used to report all
+  // audio metrics.
+  // `analyzer_helper` is a pointer to a class that will allow track_id to
+  // stream_id matching. The caller is responsible for ensuring the
+  // AnalyzerHelper outlives the instance of the AudioQualityAnalyzerInterface.
+  virtual void Start(std::string test_case_name,
+                     TrackIdStreamInfoMap* analyzer_helper) = 0;
+
+  // Will be called by the framework at the end of the test. The analyzer
+  // has to finalize all its stats and it should report them.
+  virtual void Stop() = 0;
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_AUDIO_QUALITY_ANALYZER_INTERFACE_H_
diff --git a/third_party/libwebrtc/api/test/audioproc_float.cc b/third_party/libwebrtc/api/test/audioproc_float.cc
new file mode 100644
index 0000000000..c8d7ff7193
--- /dev/null
+++ b/third_party/libwebrtc/api/test/audioproc_float.cc
@@ -0,0 +1,44 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#include "api/test/audioproc_float.h"
+
+#include <utility>
+
+#include "modules/audio_processing/test/audioproc_float_impl.h"
+
+namespace webrtc {
+namespace test {
+
+int AudioprocFloat(rtc::scoped_refptr<AudioProcessing> audio_processing,
+                   int argc,
+                   char* argv[]) {
+  return AudioprocFloatImpl(std::move(audio_processing), argc, argv);
+}
+
+int AudioprocFloat(std::unique_ptr<AudioProcessingBuilder> ap_builder,
+                   int argc,
+                   char* argv[]) {
+  return AudioprocFloatImpl(std::move(ap_builder), argc, argv,
+                            /*input_aecdump=*/"",
+                            /*processed_capture_samples=*/nullptr);
+}
+
+int AudioprocFloat(std::unique_ptr<AudioProcessingBuilder> ap_builder,
+                   int argc,
+                   char* argv[],
+                   absl::string_view input_aecdump,
+                   std::vector<float>* processed_capture_samples) {
+  return AudioprocFloatImpl(std::move(ap_builder), argc, argv, input_aecdump,
+                            processed_capture_samples);
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/audioproc_float.h b/third_party/libwebrtc/api/test/audioproc_float.h
new file mode 100644
index 0000000000..1ef1c9828f
--- /dev/null
+++ b/third_party/libwebrtc/api/test/audioproc_float.h
@@ -0,0 +1,71 @@
+/*
+ *  Copyright (c) 2018 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_TEST_AUDIOPROC_FLOAT_H_
+#define API_TEST_AUDIOPROC_FLOAT_H_
+
+#include <memory>
+#include <vector>
+
+#include "modules/audio_processing/include/audio_processing.h"
+
+namespace webrtc {
+namespace test {
+
+// This is an interface for the audio processing simulation utility. This
+// utility can be used to simulate the audioprocessing module using a recording
+// (either an AEC dump or wav files), and generate the output as a wav file.
+// Any audio_processing object specified in the input is used for the
+// simulation. The optional `audio_processing` object provides the
+// AudioProcessing instance that is used during the simulation. Note that when
+// the audio_processing object is specified all functionality that relies on
+// using the AudioProcessingBuilder is deactivated, since the AudioProcessing
+// object is already created and the builder is not used in the simulation. It
+// is needed to pass the command line flags as `argc` and `argv`, so these can
+// be interpreted properly by the utility. To see a list of all supported
+// command line flags, run the executable with the '--help' flag.
+int AudioprocFloat(rtc::scoped_refptr<AudioProcessing> audio_processing,
+                   int argc,
+                   char* argv[]);
+
+// This is an interface for the audio processing simulation utility. This
+// utility can be used to simulate the audioprocessing module using a recording
+// (either an AEC dump or wav files), and generate the output as a wav file.
+// The `ap_builder` object will be used to create the AudioProcessing instance
+// that is used during the simulation. The `ap_builder` supports setting of
+// injectable components, which will be passed on to the created AudioProcessing
+// instance. It is needed to pass the command line flags as `argc` and `argv`,
+// so these can be interpreted properly by the utility.
+// To get a fully-working audioproc_f utility, all that is needed is to write a
+// main function, create an AudioProcessingBuilder, optionally set custom
+// processing components on it, and pass the builder together with the command
+// line arguments into this function.
+// To see a list of all supported command line flags, run the executable with
+// the '--help' flag.
+int AudioprocFloat(std::unique_ptr<AudioProcessingBuilder> ap_builder,
+                   int argc,
+                   char* argv[]);
+
+// Interface for the audio processing simulation utility, which is similar to
+// the one above, but which adds the option of receiving the input as a string
+// and returning the output as an array. The first three arguments fulfill the
+// same purpose as above. Pass the `input_aecdump` to provide the content of an
+// AEC dump file as a string. After the simulation is completed,
+// `processed_capture_samples` will contain the the samples processed on the
+// capture side.
+int AudioprocFloat(std::unique_ptr<AudioProcessingBuilder> ap_builder,
+                   int argc,
+                   char* argv[],
+                   absl::string_view input_aecdump,
+                   std::vector<float>* processed_capture_samples);
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_AUDIOPROC_FLOAT_H_
diff --git a/third_party/libwebrtc/api/test/compile_all_headers.cc b/third_party/libwebrtc/api/test/compile_all_headers.cc
new file mode 100644
index 0000000000..1fcf63e97b
--- /dev/null
+++ b/third_party/libwebrtc/api/test/compile_all_headers.cc
@@ -0,0 +1,53 @@
+/*
+ *  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.
+ */
+
+// This file verifies that all include files in this directory can be
+// compiled without errors or other required includes.
+
+// Note: The following header files are not not tested here, as their
+// associated targets are not included in all configurations.
+// "api/test/audioproc_float.h"
+// "api/test/create_video_quality_test_fixture.h"
+// "api/test/neteq_simulator_factory.h"
+// "api/test/video_quality_test_fixture.h"
+// The following header files are also not tested:
+// "api/test/create_simulcast_test_fixture.h"
+// "api/test/create_videocodec_test_fixture.h"
+// "api/test/neteq_simulator.h"
+// "api/test/simulated_network.h"
+// "api/test/simulcast_test_fixture.h"
+// "api/test/test_dependency_factory.h"
+// "api/test/videocodec_test_fixture.h"
+// "api/test/videocodec_test_stats.h"
+
+#include "api/test/fake_frame_decryptor.h"
+#include "api/test/fake_frame_encryptor.h"
+#include "api/test/mock_async_dns_resolver.h"
+#include "api/test/mock_audio_mixer.h"
+#include "api/test/mock_audio_sink.h"
+#include "api/test/mock_data_channel.h"
+#include "api/test/mock_dtmf_sender.h"
+#include "api/test/mock_frame_decryptor.h"
+#include "api/test/mock_frame_encryptor.h"
+#include "api/test/mock_media_stream_interface.h"
+#include "api/test/mock_peer_connection_factory_interface.h"
+#include "api/test/mock_peerconnectioninterface.h"
+#include "api/test/mock_rtp_transceiver.h"
+#include "api/test/mock_rtpreceiver.h"
+#include "api/test/mock_rtpsender.h"
+#include "api/test/mock_session_description_interface.h"
+#include "api/test/mock_transformable_video_frame.h"
+#include "api/test/mock_video_bitrate_allocator.h"
+#include "api/test/mock_video_bitrate_allocator_factory.h"
+#include "api/test/mock_video_decoder.h"
+#include "api/test/mock_video_decoder_factory.h"
+#include "api/test/mock_video_encoder.h"
+#include "api/test/mock_video_encoder_factory.h"
+#include "api/test/mock_video_track.h"
diff --git a/third_party/libwebrtc/api/test/create_frame_generator.cc b/third_party/libwebrtc/api/test/create_frame_generator.cc
new file mode 100644
index 0000000000..5e6fb3228b
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_frame_generator.cc
@@ -0,0 +1,101 @@
+/*
+ *  Copyright (c) 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.
+ */
+
+#include "api/test/create_frame_generator.h"
+
+#include <cstdio>
+#include <utility>
+
+#include "rtc_base/checks.h"
+#include "test/frame_generator.h"
+#include "test/testsupport/ivf_video_frame_generator.h"
+
+namespace webrtc {
+namespace test {
+
+std::unique_ptr<FrameGeneratorInterface> CreateSquareFrameGenerator(
+    int width,
+    int height,
+    absl::optional<FrameGeneratorInterface::OutputType> type,
+    absl::optional<int> num_squares) {
+  return std::make_unique<SquareGenerator>(
+      width, height, type.value_or(FrameGeneratorInterface::OutputType::kI420),
+      num_squares.value_or(10));
+}
+
+std::unique_ptr<FrameGeneratorInterface> CreateFromYuvFileFrameGenerator(
+    std::vector<std::string> filenames,
+    size_t width,
+    size_t height,
+    int frame_repeat_count) {
+  RTC_DCHECK(!filenames.empty());
+  std::vector<FILE*> files;
+  for (const std::string& filename : filenames) {
+    FILE* file = fopen(filename.c_str(), "rb");
+    RTC_DCHECK(file != nullptr) << "Failed to open: '" << filename << "'\n";
+    files.push_back(file);
+  }
+
+  return std::make_unique<YuvFileGenerator>(files, width, height,
+                                            frame_repeat_count);
+}
+
+std::unique_ptr<FrameGeneratorInterface> CreateFromNV12FileFrameGenerator(
+    std::vector<std::string> filenames,
+    size_t width,
+    size_t height,
+    int frame_repeat_count) {
+  RTC_DCHECK(!filenames.empty());
+  std::vector<FILE*> files;
+  for (const std::string& filename : filenames) {
+    FILE* file = fopen(filename.c_str(), "rb");
+    RTC_DCHECK(file != nullptr) << "Failed to open: '" << filename << "'\n";
+    files.push_back(file);
+  }
+
+  return std::make_unique<NV12FileGenerator>(files, width, height,
+                                             frame_repeat_count);
+}
+
+std::unique_ptr<FrameGeneratorInterface> CreateFromIvfFileFrameGenerator(
+    std::string filename) {
+  return std::make_unique<IvfVideoFrameGenerator>(std::move(filename));
+}
+
+std::unique_ptr<FrameGeneratorInterface>
+CreateScrollingInputFromYuvFilesFrameGenerator(
+    Clock* clock,
+    std::vector<std::string> filenames,
+    size_t source_width,
+    size_t source_height,
+    size_t target_width,
+    size_t target_height,
+    int64_t scroll_time_ms,
+    int64_t pause_time_ms) {
+  RTC_DCHECK(!filenames.empty());
+  std::vector<FILE*> files;
+  for (const std::string& filename : filenames) {
+    FILE* file = fopen(filename.c_str(), "rb");
+    RTC_DCHECK(file != nullptr);
+    files.push_back(file);
+  }
+
+  return std::make_unique<ScrollingImageFrameGenerator>(
+      clock, files, source_width, source_height, target_width, target_height,
+      scroll_time_ms, pause_time_ms);
+}
+
+std::unique_ptr<FrameGeneratorInterface>
+CreateSlideFrameGenerator(int width, int height, int frame_repeat_count) {
+  return std::make_unique<SlideGenerator>(width, height, frame_repeat_count);
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_frame_generator.h b/third_party/libwebrtc/api/test/create_frame_generator.h
new file mode 100644
index 0000000000..70be0c4e8e
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_frame_generator.h
@@ -0,0 +1,85 @@
+/*
+ *  Copyright (c) 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_TEST_CREATE_FRAME_GENERATOR_H_
+#define API_TEST_CREATE_FRAME_GENERATOR_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/test/frame_generator_interface.h"
+#include "system_wrappers/include/clock.h"
+
+namespace webrtc {
+namespace test {
+
+// Creates a frame generator that produces frames with small squares that
+// move randomly towards the lower right corner.
+// `type` has the default value FrameGeneratorInterface::OutputType::I420.
+// `num_squares` has the default value 10.
+std::unique_ptr<FrameGeneratorInterface> CreateSquareFrameGenerator(
+    int width,
+    int height,
+    absl::optional<FrameGeneratorInterface::OutputType> type,
+    absl::optional<int> num_squares);
+
+// Creates a frame generator that repeatedly plays a set of yuv files.
+// The frame_repeat_count determines how many times each frame is shown,
+// with 1 = show each frame once, etc.
+std::unique_ptr<FrameGeneratorInterface> CreateFromYuvFileFrameGenerator(
+    std::vector<std::string> filenames,
+    size_t width,
+    size_t height,
+    int frame_repeat_count);
+
+// Creates a frame generator that repeatedly plays a set of nv12 files.
+// The frame_repeat_count determines how many times each frame is shown,
+// with 1 = show each frame once, etc.
+std::unique_ptr<FrameGeneratorInterface> CreateFromNV12FileFrameGenerator(
+    std::vector<std::string> filenames,
+    size_t width,
+    size_t height,
+    int frame_repeat_count = 1);
+
+// Creates a frame generator that repeatedly plays an ivf file.
+std::unique_ptr<FrameGeneratorInterface> CreateFromIvfFileFrameGenerator(
+    std::string filename);
+
+// Creates a frame generator which takes a set of yuv files (wrapping a
+// frame generator created by CreateFromYuvFile() above), but outputs frames
+// that have been cropped to specified resolution: source_width/source_height
+// is the size of the source images, target_width/target_height is the size of
+// the cropped output. For each source image read, the cropped viewport will
+// be scrolled top to bottom/left to right for scroll_tim_ms milliseconds.
+// After that the image will stay in place for pause_time_ms milliseconds,
+// and then this will be repeated with the next file from the input set.
+std::unique_ptr<FrameGeneratorInterface>
+CreateScrollingInputFromYuvFilesFrameGenerator(
+    Clock* clock,
+    std::vector<std::string> filenames,
+    size_t source_width,
+    size_t source_height,
+    size_t target_width,
+    size_t target_height,
+    int64_t scroll_time_ms,
+    int64_t pause_time_ms);
+
+// Creates a frame generator that produces randomly generated slides. It fills
+// the frames with randomly sized and colored squares.
+// `frame_repeat_count` determines how many times each slide is shown.
+std::unique_ptr<FrameGeneratorInterface>
+CreateSlideFrameGenerator(int width, int height, int frame_repeat_count);
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_CREATE_FRAME_GENERATOR_H_
diff --git a/third_party/libwebrtc/api/test/create_network_emulation_manager.cc b/third_party/libwebrtc/api/test/create_network_emulation_manager.cc
new file mode 100644
index 0000000000..f5d5a1bc88
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_network_emulation_manager.cc
@@ -0,0 +1,27 @@
+
+/*
+ *  Copyright (c) 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.
+ */
+
+#include "api/test/create_network_emulation_manager.h"
+
+#include <memory>
+
+#include "test/network/network_emulation_manager.h"
+
+namespace webrtc {
+
+std::unique_ptr<NetworkEmulationManager> CreateNetworkEmulationManager(
+    TimeMode time_mode,
+    EmulatedNetworkStatsGatheringMode stats_gathering_mode) {
+  return std::make_unique<test::NetworkEmulationManagerImpl>(
+      time_mode, stats_gathering_mode);
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_network_emulation_manager.h b/third_party/libwebrtc/api/test/create_network_emulation_manager.h
new file mode 100644
index 0000000000..941b2b1c52
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_network_emulation_manager.h
@@ -0,0 +1,28 @@
+/*
+ *  Copyright (c) 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_TEST_CREATE_NETWORK_EMULATION_MANAGER_H_
+#define API_TEST_CREATE_NETWORK_EMULATION_MANAGER_H_
+
+#include <memory>
+
+#include "api/test/network_emulation_manager.h"
+
+namespace webrtc {
+
+// Returns a non-null NetworkEmulationManager instance.
+std::unique_ptr<NetworkEmulationManager> CreateNetworkEmulationManager(
+    TimeMode time_mode = TimeMode::kRealTime,
+    EmulatedNetworkStatsGatheringMode stats_gathering_mode =
+        EmulatedNetworkStatsGatheringMode::kDefault);
+
+}  // namespace webrtc
+
+#endif  // API_TEST_CREATE_NETWORK_EMULATION_MANAGER_H_
diff --git a/third_party/libwebrtc/api/test/create_peer_connection_quality_test_frame_generator.cc b/third_party/libwebrtc/api/test/create_peer_connection_quality_test_frame_generator.cc
new file mode 100644
index 0000000000..a1c53635f9
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_peer_connection_quality_test_frame_generator.cc
@@ -0,0 +1,103 @@
+/*
+ *  Copyright (c) 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.
+ */
+
+#include "api/test/create_peer_connection_quality_test_frame_generator.h"
+
+#include <utility>
+#include <vector>
+
+#include "api/test/create_frame_generator.h"
+#include "api/test/pclf/media_configuration.h"
+#include "rtc_base/checks.h"
+#include "test/testsupport/file_utils.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+void ValidateScreenShareConfig(const VideoConfig& video_config,
+                               const ScreenShareConfig& screen_share_config) {
+  if (screen_share_config.slides_yuv_file_names.empty()) {
+    if (screen_share_config.scrolling_params) {
+      // If we have scrolling params, then its `source_width` and `source_heigh`
+      // will be used as width and height of video input, so we have to validate
+      // it against width and height of default input.
+      RTC_CHECK_EQ(screen_share_config.scrolling_params->source_width,
+                   kDefaultSlidesWidth);
+      RTC_CHECK_EQ(screen_share_config.scrolling_params->source_height,
+                   kDefaultSlidesHeight);
+    } else {
+      RTC_CHECK_EQ(video_config.width, kDefaultSlidesWidth);
+      RTC_CHECK_EQ(video_config.height, kDefaultSlidesHeight);
+    }
+  }
+  if (screen_share_config.scrolling_params) {
+    RTC_CHECK_LE(screen_share_config.scrolling_params->duration,
+                 screen_share_config.slide_change_interval);
+    RTC_CHECK_GE(screen_share_config.scrolling_params->source_width,
+                 video_config.width);
+    RTC_CHECK_GE(screen_share_config.scrolling_params->source_height,
+                 video_config.height);
+  }
+}
+
+std::unique_ptr<test::FrameGeneratorInterface> CreateSquareFrameGenerator(
+    const VideoConfig& video_config,
+    absl::optional<test::FrameGeneratorInterface::OutputType> type) {
+  return test::CreateSquareFrameGenerator(
+      video_config.width, video_config.height, std::move(type), absl::nullopt);
+}
+
+std::unique_ptr<test::FrameGeneratorInterface> CreateFromYuvFileFrameGenerator(
+    const VideoConfig& video_config,
+    std::string filename) {
+  return test::CreateFromYuvFileFrameGenerator(
+      {std::move(filename)}, video_config.width, video_config.height,
+      /*frame_repeat_count=*/1);
+}
+
+std::unique_ptr<test::FrameGeneratorInterface> CreateScreenShareFrameGenerator(
+    const VideoConfig& video_config,
+    const ScreenShareConfig& screen_share_config) {
+  ValidateScreenShareConfig(video_config, screen_share_config);
+  if (screen_share_config.generate_slides) {
+    return test::CreateSlideFrameGenerator(
+        video_config.width, video_config.height,
+        screen_share_config.slide_change_interval.seconds() * video_config.fps);
+  }
+  std::vector<std::string> slides = screen_share_config.slides_yuv_file_names;
+  if (slides.empty()) {
+    // If slides is empty we need to add default slides as source. In such case
+    // video width and height is validated to be equal to kDefaultSlidesWidth
+    // and kDefaultSlidesHeight.
+    slides.push_back(test::ResourcePath("web_screenshot_1850_1110", "yuv"));
+    slides.push_back(test::ResourcePath("presentation_1850_1110", "yuv"));
+    slides.push_back(test::ResourcePath("photo_1850_1110", "yuv"));
+    slides.push_back(test::ResourcePath("difficult_photo_1850_1110", "yuv"));
+  }
+  if (!screen_share_config.scrolling_params) {
+    // Cycle image every slide_change_interval seconds.
+    return test::CreateFromYuvFileFrameGenerator(
+        slides, video_config.width, video_config.height,
+        screen_share_config.slide_change_interval.seconds() * video_config.fps);
+  }
+
+  TimeDelta pause_duration = screen_share_config.slide_change_interval -
+                             screen_share_config.scrolling_params->duration;
+  RTC_DCHECK(pause_duration >= TimeDelta::Zero());
+  return test::CreateScrollingInputFromYuvFilesFrameGenerator(
+      Clock::GetRealTimeClock(), slides,
+      screen_share_config.scrolling_params->source_width,
+      screen_share_config.scrolling_params->source_height, video_config.width,
+      video_config.height, screen_share_config.scrolling_params->duration.ms(),
+      pause_duration.ms());
+}
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_peer_connection_quality_test_frame_generator.h b/third_party/libwebrtc/api/test/create_peer_connection_quality_test_frame_generator.h
new file mode 100644
index 0000000000..62043d140a
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_peer_connection_quality_test_frame_generator.h
@@ -0,0 +1,44 @@
+/*
+ *  Copyright (c) 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_TEST_CREATE_PEER_CONNECTION_QUALITY_TEST_FRAME_GENERATOR_H_
+#define API_TEST_CREATE_PEER_CONNECTION_QUALITY_TEST_FRAME_GENERATOR_H_
+
+#include <memory>
+#include <string>
+
+#include "absl/types/optional.h"
+#include "api/test/frame_generator_interface.h"
+#include "api/test/pclf/media_configuration.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// Creates a frame generator that produces frames with small squares that move
+// randomly towards the lower right corner. `type` has the default value
+// FrameGeneratorInterface::OutputType::I420. video_config specifies frame
+// weight and height.
+std::unique_ptr<test::FrameGeneratorInterface> CreateSquareFrameGenerator(
+    const VideoConfig& video_config,
+    absl::optional<test::FrameGeneratorInterface::OutputType> type);
+
+// Creates a frame generator that plays frames from the yuv file.
+std::unique_ptr<test::FrameGeneratorInterface> CreateFromYuvFileFrameGenerator(
+    const VideoConfig& video_config,
+    std::string filename);
+
+// Creates a proper frame generator for testing screen sharing.
+std::unique_ptr<test::FrameGeneratorInterface> CreateScreenShareFrameGenerator(
+    const VideoConfig& video_config,
+    const ScreenShareConfig& screen_share_config);
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_CREATE_PEER_CONNECTION_QUALITY_TEST_FRAME_GENERATOR_H_
diff --git a/third_party/libwebrtc/api/test/create_peerconnection_quality_test_fixture.cc b/third_party/libwebrtc/api/test/create_peerconnection_quality_test_fixture.cc
new file mode 100644
index 0000000000..e156991ed4
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_peerconnection_quality_test_fixture.cc
@@ -0,0 +1,36 @@
+/*
+ *  Copyright (c) 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.
+ */
+
+#include "api/test/create_peerconnection_quality_test_fixture.h"
+
+#include <memory>
+#include <utility>
+
+#include "api/test/metrics/global_metrics_logger_and_exporter.h"
+#include "api/test/time_controller.h"
+#include "test/pc/e2e/peer_connection_quality_test.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+std::unique_ptr<PeerConnectionE2EQualityTestFixture>
+CreatePeerConnectionE2EQualityTestFixture(
+    std::string test_case_name,
+    TimeController& time_controller,
+    std::unique_ptr<AudioQualityAnalyzerInterface> audio_quality_analyzer,
+    std::unique_ptr<VideoQualityAnalyzerInterface> video_quality_analyzer) {
+  return std::make_unique<PeerConnectionE2EQualityTest>(
+      std::move(test_case_name), time_controller,
+      std::move(audio_quality_analyzer), std::move(video_quality_analyzer),
+      test::GetGlobalMetricsLogger());
+}
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_peerconnection_quality_test_fixture.h b/third_party/libwebrtc/api/test/create_peerconnection_quality_test_fixture.h
new file mode 100644
index 0000000000..a0b0d08dd4
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_peerconnection_quality_test_fixture.h
@@ -0,0 +1,43 @@
+/*
+ *  Copyright (c) 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_TEST_CREATE_PEERCONNECTION_QUALITY_TEST_FIXTURE_H_
+#define API_TEST_CREATE_PEERCONNECTION_QUALITY_TEST_FIXTURE_H_
+
+#include <memory>
+#include <string>
+
+#include "api/test/audio_quality_analyzer_interface.h"
+#include "api/test/peerconnection_quality_test_fixture.h"
+#include "api/test/time_controller.h"
+#include "api/test/video_quality_analyzer_interface.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// API is in development. Can be changed/removed without notice.
+
+// Create test fixture to establish test call between Alice and Bob.
+// During the test Alice will be caller and Bob will answer the call.
+// `test_case_name` is a name of test case, that will be used for all metrics
+// reporting.
+// `time_controller` is used to manage all rtc::Thread's and TaskQueue
+// instances. Instance of `time_controller` have to outlive created fixture.
+// Returns a non-null PeerConnectionE2EQualityTestFixture instance.
+std::unique_ptr<PeerConnectionE2EQualityTestFixture>
+CreatePeerConnectionE2EQualityTestFixture(
+    std::string test_case_name,
+    TimeController& time_controller,
+    std::unique_ptr<AudioQualityAnalyzerInterface> audio_quality_analyzer,
+    std::unique_ptr<VideoQualityAnalyzerInterface> video_quality_analyzer);
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_CREATE_PEERCONNECTION_QUALITY_TEST_FIXTURE_H_
diff --git a/third_party/libwebrtc/api/test/create_simulcast_test_fixture.cc b/third_party/libwebrtc/api/test/create_simulcast_test_fixture.cc
new file mode 100644
index 0000000000..024145dff0
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_simulcast_test_fixture.cc
@@ -0,0 +1,31 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#include "api/test/create_simulcast_test_fixture.h"
+
+#include <memory>
+#include <utility>
+
+#include "api/test/simulcast_test_fixture.h"
+#include "modules/video_coding/utility/simulcast_test_fixture_impl.h"
+
+namespace webrtc {
+namespace test {
+
+std::unique_ptr<SimulcastTestFixture> CreateSimulcastTestFixture(
+    std::unique_ptr<VideoEncoderFactory> encoder_factory,
+    std::unique_ptr<VideoDecoderFactory> decoder_factory,
+    SdpVideoFormat video_format) {
+  return std::make_unique<SimulcastTestFixtureImpl>(
+      std::move(encoder_factory), std::move(decoder_factory), video_format);
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_simulcast_test_fixture.h b/third_party/libwebrtc/api/test/create_simulcast_test_fixture.h
new file mode 100644
index 0000000000..87f229c009
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_simulcast_test_fixture.h
@@ -0,0 +1,32 @@
+/*
+ *  Copyright (c) 2018 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_TEST_CREATE_SIMULCAST_TEST_FIXTURE_H_
+#define API_TEST_CREATE_SIMULCAST_TEST_FIXTURE_H_
+
+#include <memory>
+
+#include "api/test/simulcast_test_fixture.h"
+#include "api/video_codecs/sdp_video_format.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "api/video_codecs/video_encoder_factory.h"
+
+namespace webrtc {
+namespace test {
+
+std::unique_ptr<SimulcastTestFixture> CreateSimulcastTestFixture(
+    std::unique_ptr<VideoEncoderFactory> encoder_factory,
+    std::unique_ptr<VideoDecoderFactory> decoder_factory,
+    SdpVideoFormat video_format);
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_CREATE_SIMULCAST_TEST_FIXTURE_H_
diff --git a/third_party/libwebrtc/api/test/create_time_controller.cc b/third_party/libwebrtc/api/test/create_time_controller.cc
new file mode 100644
index 0000000000..d198f2b0fe
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_time_controller.cc
@@ -0,0 +1,53 @@
+/*
+ *  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.
+ */
+
+#include "api/test/create_time_controller.h"
+
+#include <memory>
+
+#include "call/call.h"
+#include "call/rtp_transport_config.h"
+#include "call/rtp_transport_controller_send_factory_interface.h"
+#include "test/time_controller/external_time_controller.h"
+#include "test/time_controller/simulated_time_controller.h"
+
+namespace webrtc {
+
+std::unique_ptr<TimeController> CreateTimeController(
+    ControlledAlarmClock* alarm) {
+  return std::make_unique<ExternalTimeController>(alarm);
+}
+
+std::unique_ptr<TimeController> CreateSimulatedTimeController() {
+  return std::make_unique<GlobalSimulatedTimeController>(
+      Timestamp::Seconds(10000));
+}
+
+std::unique_ptr<CallFactoryInterface> CreateTimeControllerBasedCallFactory(
+    TimeController* time_controller) {
+  class TimeControllerBasedCallFactory : public CallFactoryInterface {
+   public:
+    explicit TimeControllerBasedCallFactory(TimeController* time_controller)
+        : time_controller_(time_controller) {}
+    Call* CreateCall(const Call::Config& config) override {
+      RtpTransportConfig transportConfig = config.ExtractTransportConfig();
+
+      return Call::Create(config, time_controller_->GetClock(),
+                          config.rtp_transport_controller_send_factory->Create(
+                              transportConfig, time_controller_->GetClock()));
+    }
+
+   private:
+    TimeController* time_controller_;
+  };
+  return std::make_unique<TimeControllerBasedCallFactory>(time_controller);
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_time_controller.h b/third_party/libwebrtc/api/test/create_time_controller.h
new file mode 100644
index 0000000000..e7bc9cb465
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_time_controller.h
@@ -0,0 +1,34 @@
+/*
+ *  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_TEST_CREATE_TIME_CONTROLLER_H_
+#define API_TEST_CREATE_TIME_CONTROLLER_H_
+
+#include <memory>
+
+#include "api/call/call_factory_interface.h"
+#include "api/test/time_controller.h"
+
+namespace webrtc {
+
+// Creates a time coltroller that wraps `alarm`.
+std::unique_ptr<TimeController> CreateTimeController(
+    ControlledAlarmClock* alarm);
+
+// Creates a time controller that runs in simulated time.
+std::unique_ptr<TimeController> CreateSimulatedTimeController();
+
+// This is creates a call factory that creates Call instances that are backed by
+// a time controller.
+std::unique_ptr<CallFactoryInterface> CreateTimeControllerBasedCallFactory(
+    TimeController* time_controller);
+
+}  // namespace webrtc
+
+#endif  // API_TEST_CREATE_TIME_CONTROLLER_H_
diff --git a/third_party/libwebrtc/api/test/create_time_controller_unittest.cc b/third_party/libwebrtc/api/test/create_time_controller_unittest.cc
new file mode 100644
index 0000000000..0ea868c5cc
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_time_controller_unittest.cc
@@ -0,0 +1,76 @@
+/*
+ *  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.
+ */
+
+#include "api/test/create_time_controller.h"
+
+#include "api/test/time_controller.h"
+#include "api/units/time_delta.h"
+#include "api/units/timestamp.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace {
+
+class FakeAlarm : public ControlledAlarmClock {
+ public:
+  explicit FakeAlarm(Timestamp start_time);
+
+  Clock* GetClock() override;
+  bool ScheduleAlarmAt(Timestamp deadline) override;
+  void SetCallback(std::function<void()> callback) override;
+  void Sleep(TimeDelta duration) override;
+
+ private:
+  SimulatedClock clock_;
+  Timestamp deadline_;
+  std::function<void()> callback_;
+};
+
+FakeAlarm::FakeAlarm(Timestamp start_time)
+    : clock_(start_time),
+      deadline_(Timestamp::PlusInfinity()),
+      callback_([] {}) {}
+
+Clock* FakeAlarm::GetClock() {
+  return &clock_;
+}
+
+bool FakeAlarm::ScheduleAlarmAt(Timestamp deadline) {
+  if (deadline < deadline_) {
+    deadline_ = deadline;
+    return true;
+  }
+  return false;
+}
+
+void FakeAlarm::SetCallback(std::function<void()> callback) {
+  callback_ = callback;
+}
+
+void FakeAlarm::Sleep(TimeDelta duration) {
+  Timestamp end_time = clock_.CurrentTime() + duration;
+
+  while (deadline_ <= end_time) {
+    clock_.AdvanceTime(deadline_ - clock_.CurrentTime());
+    deadline_ = Timestamp::PlusInfinity();
+    callback_();
+  }
+
+  clock_.AdvanceTime(end_time - clock_.CurrentTime());
+}
+
+TEST(CreateTimeControllerTest, CreatesNonNullController) {
+  FakeAlarm alarm(Timestamp::Millis(100));
+  EXPECT_NE(CreateTimeController(&alarm), nullptr);
+}
+
+}  // namespace
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_video_codec_tester.cc b/third_party/libwebrtc/api/test/create_video_codec_tester.cc
new file mode 100644
index 0000000000..a1efefdb48
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_video_codec_tester.cc
@@ -0,0 +1,27 @@
+/*
+ *  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.
+ */
+
+#include "api/test/create_video_codec_tester.h"
+
+#include <memory>
+#include <utility>
+
+#include "api/test/video_codec_tester.h"
+#include "modules/video_coding/codecs/test/video_codec_tester_impl.h"
+
+namespace webrtc {
+namespace test {
+
+std::unique_ptr<VideoCodecTester> CreateVideoCodecTester() {
+  return std::make_unique<VideoCodecTesterImpl>();
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_video_codec_tester.h b/third_party/libwebrtc/api/test/create_video_codec_tester.h
new file mode 100644
index 0000000000..c68864ce85
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_video_codec_tester.h
@@ -0,0 +1,26 @@
+/*
+ *  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 API_TEST_CREATE_VIDEO_CODEC_TESTER_H_
+#define API_TEST_CREATE_VIDEO_CODEC_TESTER_H_
+
+#include <memory>
+
+#include "api/test/video_codec_tester.h"
+
+namespace webrtc {
+namespace test {
+
+std::unique_ptr<VideoCodecTester> CreateVideoCodecTester();
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_CREATE_VIDEO_CODEC_TESTER_H_
diff --git a/third_party/libwebrtc/api/test/create_video_quality_test_fixture.cc b/third_party/libwebrtc/api/test/create_video_quality_test_fixture.cc
new file mode 100644
index 0000000000..1fa7d243cc
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_video_quality_test_fixture.cc
@@ -0,0 +1,40 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#include "api/test/create_video_quality_test_fixture.h"
+
+#include <memory>
+#include <utility>
+
+#include "video/video_quality_test.h"
+
+namespace webrtc {
+
+std::unique_ptr<VideoQualityTestFixtureInterface>
+CreateVideoQualityTestFixture() {
+  // By default, we don't override the FEC module, so pass an empty factory.
+  return std::make_unique<VideoQualityTest>(nullptr);
+}
+
+std::unique_ptr<VideoQualityTestFixtureInterface> CreateVideoQualityTestFixture(
+    std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory) {
+  auto components =
+      std::make_unique<VideoQualityTestFixtureInterface::InjectionComponents>();
+  components->fec_controller_factory = std::move(fec_controller_factory);
+  return std::make_unique<VideoQualityTest>(std::move(components));
+}
+
+std::unique_ptr<VideoQualityTestFixtureInterface> CreateVideoQualityTestFixture(
+    std::unique_ptr<VideoQualityTestFixtureInterface::InjectionComponents>
+        components) {
+  return std::make_unique<VideoQualityTest>(std::move(components));
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_video_quality_test_fixture.h b/third_party/libwebrtc/api/test/create_video_quality_test_fixture.h
new file mode 100644
index 0000000000..ed618fefc8
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_video_quality_test_fixture.h
@@ -0,0 +1,31 @@
+/*
+ *  Copyright (c) 2018 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_TEST_CREATE_VIDEO_QUALITY_TEST_FIXTURE_H_
+#define API_TEST_CREATE_VIDEO_QUALITY_TEST_FIXTURE_H_
+
+#include <memory>
+
+#include "api/fec_controller.h"
+#include "api/test/video_quality_test_fixture.h"
+
+namespace webrtc {
+
+std::unique_ptr<VideoQualityTestFixtureInterface>
+CreateVideoQualityTestFixture();
+
+std::unique_ptr<VideoQualityTestFixtureInterface> CreateVideoQualityTestFixture(
+    std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory);
+
+std::unique_ptr<VideoQualityTestFixtureInterface> CreateVideoQualityTestFixture(
+    std::unique_ptr<VideoQualityTestFixtureInterface::InjectionComponents>
+        components);
+}  // namespace webrtc
+
+#endif  // API_TEST_CREATE_VIDEO_QUALITY_TEST_FIXTURE_H_
diff --git a/third_party/libwebrtc/api/test/create_videocodec_test_fixture.cc b/third_party/libwebrtc/api/test/create_videocodec_test_fixture.cc
new file mode 100644
index 0000000000..1f618e5db8
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_videocodec_test_fixture.cc
@@ -0,0 +1,38 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#include "api/test/create_videocodec_test_fixture.h"
+
+#include <memory>
+#include <utility>
+
+#include "api/test/videocodec_test_fixture.h"
+#include "modules/video_coding/codecs/test/videocodec_test_fixture_impl.h"
+
+namespace webrtc {
+namespace test {
+
+using Config = VideoCodecTestFixture::Config;
+
+std::unique_ptr<VideoCodecTestFixture> CreateVideoCodecTestFixture(
+    const Config& config) {
+  return std::make_unique<VideoCodecTestFixtureImpl>(config);
+}
+
+std::unique_ptr<VideoCodecTestFixture> CreateVideoCodecTestFixture(
+    const Config& config,
+    std::unique_ptr<VideoDecoderFactory> decoder_factory,
+    std::unique_ptr<VideoEncoderFactory> encoder_factory) {
+  return std::make_unique<VideoCodecTestFixtureImpl>(
+      config, std::move(decoder_factory), std::move(encoder_factory));
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/create_videocodec_test_fixture.h b/third_party/libwebrtc/api/test/create_videocodec_test_fixture.h
new file mode 100644
index 0000000000..7a44f6b058
--- /dev/null
+++ b/third_party/libwebrtc/api/test/create_videocodec_test_fixture.h
@@ -0,0 +1,34 @@
+/*
+ *  Copyright (c) 2018 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_TEST_CREATE_VIDEOCODEC_TEST_FIXTURE_H_
+#define API_TEST_CREATE_VIDEOCODEC_TEST_FIXTURE_H_
+
+#include <memory>
+
+#include "api/test/videocodec_test_fixture.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "api/video_codecs/video_encoder_factory.h"
+
+namespace webrtc {
+namespace test {
+
+std::unique_ptr<VideoCodecTestFixture> CreateVideoCodecTestFixture(
+    const VideoCodecTestFixture::Config& config);
+
+std::unique_ptr<VideoCodecTestFixture> CreateVideoCodecTestFixture(
+    const VideoCodecTestFixture::Config& config,
+    std::unique_ptr<VideoDecoderFactory> decoder_factory,
+    std::unique_ptr<VideoEncoderFactory> encoder_factory);
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_CREATE_VIDEOCODEC_TEST_FIXTURE_H_
diff --git a/third_party/libwebrtc/api/test/fake_frame_decryptor.cc b/third_party/libwebrtc/api/test/fake_frame_decryptor.cc
new file mode 100644
index 0000000000..16cb1bd3b6
--- /dev/null
+++ b/third_party/libwebrtc/api/test/fake_frame_decryptor.cc
@@ -0,0 +1,71 @@
+/*
+ *  Copyright 2018 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.
+ */
+
+#include "api/test/fake_frame_decryptor.h"
+
+#include <vector>
+
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+
+FakeFrameDecryptor::FakeFrameDecryptor(uint8_t fake_key,
+                                       uint8_t expected_postfix_byte)
+    : fake_key_(fake_key), expected_postfix_byte_(expected_postfix_byte) {}
+
+FakeFrameDecryptor::Result FakeFrameDecryptor::Decrypt(
+    cricket::MediaType media_type,
+    const std::vector<uint32_t>& csrcs,
+    rtc::ArrayView<const uint8_t> additional_data,
+    rtc::ArrayView<const uint8_t> encrypted_frame,
+    rtc::ArrayView<uint8_t> frame) {
+  if (fail_decryption_) {
+    return Result(Status::kFailedToDecrypt, 0);
+  }
+
+  RTC_CHECK_EQ(frame.size() + 1, encrypted_frame.size());
+  for (size_t i = 0; i < frame.size(); i++) {
+    frame[i] = encrypted_frame[i] ^ fake_key_;
+  }
+
+  if (encrypted_frame[frame.size()] != expected_postfix_byte_) {
+    return Result(Status::kFailedToDecrypt, 0);
+  }
+
+  return Result(Status::kOk, frame.size());
+}
+
+size_t FakeFrameDecryptor::GetMaxPlaintextByteSize(
+    cricket::MediaType media_type,
+    size_t encrypted_frame_size) {
+  return encrypted_frame_size - 1;
+}
+
+void FakeFrameDecryptor::SetFakeKey(uint8_t fake_key) {
+  fake_key_ = fake_key;
+}
+
+uint8_t FakeFrameDecryptor::GetFakeKey() const {
+  return fake_key_;
+}
+
+void FakeFrameDecryptor::SetExpectedPostfixByte(uint8_t expected_postfix_byte) {
+  expected_postfix_byte_ = expected_postfix_byte;
+}
+
+uint8_t FakeFrameDecryptor::GetExpectedPostfixByte() const {
+  return expected_postfix_byte_;
+}
+
+void FakeFrameDecryptor::SetFailDecryption(bool fail_decryption) {
+  fail_decryption_ = fail_decryption;
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/fake_frame_decryptor.h b/third_party/libwebrtc/api/test/fake_frame_decryptor.h
new file mode 100644
index 0000000000..783bc805c4
--- /dev/null
+++ b/third_party/libwebrtc/api/test/fake_frame_decryptor.h
@@ -0,0 +1,70 @@
+/*
+ *  Copyright 2018 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_TEST_FAKE_FRAME_DECRYPTOR_H_
+#define API_TEST_FAKE_FRAME_DECRYPTOR_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <vector>
+
+#include "api/array_view.h"
+#include "api/crypto/frame_decryptor_interface.h"
+#include "api/media_types.h"
+
+namespace webrtc {
+
+// The FakeFrameDecryptor is a TEST ONLY fake implementation of the
+// FrameDecryptorInterface. It is constructed with a simple single digit key and
+// a fixed postfix byte. This is just to validate that the core code works
+// as expected.
+class FakeFrameDecryptor : public FrameDecryptorInterface {
+ public:
+  // Provide a key (0,255) and some postfix byte (0,255) this should match the
+  // byte you expect from the FakeFrameEncryptor.
+  explicit FakeFrameDecryptor(uint8_t fake_key = 0xAA,
+                              uint8_t expected_postfix_byte = 255);
+  // Fake decryption that just xors the payload with the 1 byte key and checks
+  // the postfix byte. This will always fail if fail_decryption_ is set to true.
+  Result Decrypt(cricket::MediaType media_type,
+                 const std::vector<uint32_t>& csrcs,
+                 rtc::ArrayView<const uint8_t> additional_data,
+                 rtc::ArrayView<const uint8_t> encrypted_frame,
+                 rtc::ArrayView<uint8_t> frame) override;
+  // Always returns 1 less than the size of the encrypted frame.
+  size_t GetMaxPlaintextByteSize(cricket::MediaType media_type,
+                                 size_t encrypted_frame_size) override;
+  // Sets the fake key to use for encryption.
+  void SetFakeKey(uint8_t fake_key);
+  // Returns the fake key used for encryption.
+  uint8_t GetFakeKey() const;
+  // Set the Postfix byte that is expected in the encrypted payload.
+  void SetExpectedPostfixByte(uint8_t expected_postfix_byte);
+  // Returns the postfix byte that will be checked for in the encrypted payload.
+  uint8_t GetExpectedPostfixByte() const;
+  // If set to true will force all encryption to fail.
+  void SetFailDecryption(bool fail_decryption);
+  // Simple error codes for tests to validate against.
+  enum class FakeDecryptStatus : int {
+    OK = 0,
+    FORCED_FAILURE = 1,
+    INVALID_POSTFIX = 2
+  };
+
+ private:
+  uint8_t fake_key_ = 0;
+  uint8_t expected_postfix_byte_ = 0;
+  bool fail_decryption_ = false;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_FAKE_FRAME_DECRYPTOR_H_
diff --git a/third_party/libwebrtc/api/test/fake_frame_encryptor.cc b/third_party/libwebrtc/api/test/fake_frame_encryptor.cc
new file mode 100644
index 0000000000..89d14aab88
--- /dev/null
+++ b/third_party/libwebrtc/api/test/fake_frame_encryptor.cc
@@ -0,0 +1,66 @@
+/*
+ *  Copyright 2018 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.
+ */
+
+#include "api/test/fake_frame_encryptor.h"
+
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+FakeFrameEncryptor::FakeFrameEncryptor(uint8_t fake_key, uint8_t postfix_byte)
+    : fake_key_(fake_key), postfix_byte_(postfix_byte) {}
+
+// FrameEncryptorInterface implementation
+int FakeFrameEncryptor::Encrypt(cricket::MediaType media_type,
+                                uint32_t ssrc,
+                                rtc::ArrayView<const uint8_t> additional_data,
+                                rtc::ArrayView<const uint8_t> frame,
+                                rtc::ArrayView<uint8_t> encrypted_frame,
+                                size_t* bytes_written) {
+  if (fail_encryption_) {
+    return static_cast<int>(FakeEncryptionStatus::FORCED_FAILURE);
+  }
+
+  RTC_CHECK_EQ(frame.size() + 1, encrypted_frame.size());
+  for (size_t i = 0; i < frame.size(); i++) {
+    encrypted_frame[i] = frame[i] ^ fake_key_;
+  }
+
+  encrypted_frame[frame.size()] = postfix_byte_;
+  *bytes_written = encrypted_frame.size();
+  return static_cast<int>(FakeEncryptionStatus::OK);
+}
+
+size_t FakeFrameEncryptor::GetMaxCiphertextByteSize(
+    cricket::MediaType media_type,
+    size_t frame_size) {
+  return frame_size + 1;
+}
+
+void FakeFrameEncryptor::SetFakeKey(uint8_t fake_key) {
+  fake_key_ = fake_key;
+}
+
+uint8_t FakeFrameEncryptor::GetFakeKey() const {
+  return fake_key_;
+}
+
+void FakeFrameEncryptor::SetPostfixByte(uint8_t postfix_byte) {
+  postfix_byte_ = postfix_byte;
+}
+
+uint8_t FakeFrameEncryptor::GetPostfixByte() const {
+  return postfix_byte_;
+}
+
+void FakeFrameEncryptor::SetFailEncryption(bool fail_encryption) {
+  fail_encryption_ = fail_encryption;
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/fake_frame_encryptor.h b/third_party/libwebrtc/api/test/fake_frame_encryptor.h
new file mode 100644
index 0000000000..074981b183
--- /dev/null
+++ b/third_party/libwebrtc/api/test/fake_frame_encryptor.h
@@ -0,0 +1,69 @@
+/*
+ *  Copyright 2018 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_TEST_FAKE_FRAME_ENCRYPTOR_H_
+#define API_TEST_FAKE_FRAME_ENCRYPTOR_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "api/array_view.h"
+#include "api/crypto/frame_encryptor_interface.h"
+#include "api/media_types.h"
+#include "rtc_base/ref_counted_object.h"
+
+namespace webrtc {
+
+// The FakeFrameEncryptor is a TEST ONLY fake implementation of the
+// FrameEncryptorInterface. It is constructed with a simple single digit key and
+// a fixed postfix byte. This is just to validate that the core code works
+// as expected.
+class FakeFrameEncryptor
+    : public rtc::RefCountedObject<FrameEncryptorInterface> {
+ public:
+  // Provide a key (0,255) and some postfix byte (0,255).
+  explicit FakeFrameEncryptor(uint8_t fake_key = 0xAA,
+                              uint8_t postfix_byte = 255);
+  // Simply xors each payload with the provided fake key and adds the postfix
+  // bit to the end. This will always fail if fail_encryption_ is set to true.
+  int Encrypt(cricket::MediaType media_type,
+              uint32_t ssrc,
+              rtc::ArrayView<const uint8_t> additional_data,
+              rtc::ArrayView<const uint8_t> frame,
+              rtc::ArrayView<uint8_t> encrypted_frame,
+              size_t* bytes_written) override;
+  // Always returns 1 more than the size of the frame.
+  size_t GetMaxCiphertextByteSize(cricket::MediaType media_type,
+                                  size_t frame_size) override;
+  // Sets the fake key to use during encryption.
+  void SetFakeKey(uint8_t fake_key);
+  // Returns the fake key used during encryption.
+  uint8_t GetFakeKey() const;
+  // Set the postfix byte to use.
+  void SetPostfixByte(uint8_t expected_postfix_byte);
+  // Return a postfix byte added to each outgoing payload.
+  uint8_t GetPostfixByte() const;
+  // Force all encryptions to fail.
+  void SetFailEncryption(bool fail_encryption);
+
+  enum class FakeEncryptionStatus : int {
+    OK = 0,
+    FORCED_FAILURE = 1,
+  };
+
+ private:
+  uint8_t fake_key_ = 0;
+  uint8_t postfix_byte_ = 0;
+  bool fail_encryption_ = false;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_FAKE_FRAME_ENCRYPTOR_H_
diff --git a/third_party/libwebrtc/api/test/frame_generator_interface.cc b/third_party/libwebrtc/api/test/frame_generator_interface.cc
new file mode 100644
index 0000000000..fe7b1e883d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/frame_generator_interface.cc
@@ -0,0 +1,34 @@
+/*
+ *  Copyright (c) 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.
+ */
+
+#include "api/test/frame_generator_interface.h"
+
+namespace webrtc {
+namespace test {
+
+// static
+const char* FrameGeneratorInterface::OutputTypeToString(
+    FrameGeneratorInterface::OutputType type) {
+  switch (type) {
+    case OutputType::kI420:
+      return "I420";
+    case OutputType::kI420A:
+      return "I420A";
+    case OutputType::kI010:
+      return "I010";
+    case OutputType::kNV12:
+      return "NV12";
+    default:
+      RTC_DCHECK_NOTREACHED();
+  }
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/frame_generator_interface.h b/third_party/libwebrtc/api/test/frame_generator_interface.h
new file mode 100644
index 0000000000..90e60debac
--- /dev/null
+++ b/third_party/libwebrtc/api/test/frame_generator_interface.h
@@ -0,0 +1,51 @@
+/*
+ *  Copyright (c) 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_TEST_FRAME_GENERATOR_INTERFACE_H_
+#define API_TEST_FRAME_GENERATOR_INTERFACE_H_
+
+#include <utility>
+
+#include "absl/types/optional.h"
+#include "api/scoped_refptr.h"
+#include "api/video/video_frame.h"
+#include "api/video/video_frame_buffer.h"
+
+namespace webrtc {
+namespace test {
+
+class FrameGeneratorInterface {
+ public:
+  struct VideoFrameData {
+    VideoFrameData(rtc::scoped_refptr<VideoFrameBuffer> buffer,
+                   absl::optional<VideoFrame::UpdateRect> update_rect)
+        : buffer(std::move(buffer)), update_rect(update_rect) {}
+
+    rtc::scoped_refptr<VideoFrameBuffer> buffer;
+    absl::optional<VideoFrame::UpdateRect> update_rect;
+  };
+
+  enum class OutputType { kI420, kI420A, kI010, kNV12 };
+  static const char* OutputTypeToString(OutputType type);
+
+  virtual ~FrameGeneratorInterface() = default;
+
+  // Returns VideoFrameBuffer and area where most of update was done to set them
+  // on the VideoFrame object.
+  virtual VideoFrameData NextFrame() = 0;
+
+  // Change the capture resolution.
+  virtual void ChangeResolution(size_t width, size_t height) = 0;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_FRAME_GENERATOR_INTERFACE_H_
diff --git a/third_party/libwebrtc/api/test/metrics/BUILD.gn b/third_party/libwebrtc/api/test/metrics/BUILD.gn
new file mode 100644
index 0000000000..309b699329
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/BUILD.gn
@@ -0,0 +1,281 @@
+# 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.
+
+import("../../../webrtc.gni")
+if (rtc_enable_protobuf) {
+  import("//third_party/protobuf/proto_library.gni")
+}
+
+group("metrics") {
+  deps = [
+    ":global_metrics_logger_and_exporter",
+    ":metric",
+    ":metrics_accumulator",
+    ":metrics_exporter",
+    ":metrics_logger",
+    ":stdout_metrics_exporter",
+  ]
+}
+
+if (rtc_include_tests) {
+  group("metrics_unittests") {
+    testonly = true
+
+    deps = [
+      ":global_metrics_logger_and_exporter_test",
+      ":metrics_accumulator_test",
+      ":metrics_logger_test",
+      ":print_result_proxy_metrics_exporter_test",
+      ":stdout_metrics_exporter_test",
+    ]
+
+    if (rtc_enable_protobuf) {
+      deps += [
+        ":chrome_perf_dashboard_metrics_exporter_test",
+        ":metrics_set_proto_file_exporter_test",
+      ]
+    }
+  }
+}
+
+rtc_library("metric") {
+  visibility = [ "*" ]
+  sources = [
+    "metric.cc",
+    "metric.h",
+  ]
+  absl_deps = [ "//third_party/abseil-cpp/absl/types:optional" ]
+  deps = [ "../../../api/units:timestamp" ]
+}
+
+rtc_library("metrics_logger") {
+  visibility = [ "*" ]
+  sources = [
+    "metrics_logger.cc",
+    "metrics_logger.h",
+  ]
+  deps = [
+    ":metric",
+    ":metrics_accumulator",
+    "../..:array_view",
+    "../../../rtc_base/synchronization:mutex",
+    "../../../system_wrappers",
+    "../../numerics",
+  ]
+  absl_deps = [ "//third_party/abseil-cpp/absl/strings" ]
+}
+
+rtc_library("metrics_accumulator") {
+  visibility = [ "*" ]
+  sources = [
+    "metrics_accumulator.cc",
+    "metrics_accumulator.h",
+  ]
+  deps = [
+    ":metric",
+    "../../../rtc_base:macromagic",
+    "../../../rtc_base/synchronization:mutex",
+    "../../numerics",
+    "../../units:timestamp",
+  ]
+  absl_deps = [ "//third_party/abseil-cpp/absl/strings" ]
+}
+
+rtc_library("metrics_exporter") {
+  visibility = [ "*" ]
+  sources = [ "metrics_exporter.h" ]
+  deps = [
+    ":metric",
+    "../..:array_view",
+  ]
+}
+
+rtc_library("stdout_metrics_exporter") {
+  visibility = [ "*" ]
+  sources = [
+    "stdout_metrics_exporter.cc",
+    "stdout_metrics_exporter.h",
+  ]
+  deps = [
+    ":metric",
+    ":metrics_exporter",
+    "../..:array_view",
+    "../../../rtc_base:stringutils",
+  ]
+  absl_deps = [ "//third_party/abseil-cpp/absl/types:optional" ]
+}
+
+rtc_library("chrome_perf_dashboard_metrics_exporter") {
+  visibility = [ "*" ]
+  testonly = true
+  sources = [
+    "chrome_perf_dashboard_metrics_exporter.cc",
+    "chrome_perf_dashboard_metrics_exporter.h",
+  ]
+  deps = [
+    ":metric",
+    ":metrics_exporter",
+    "../../../api:array_view",
+    "../../../test:fileutils",
+    "../../../test:perf_test",
+  ]
+  absl_deps = [
+    "//third_party/abseil-cpp/absl/memory",
+    "//third_party/abseil-cpp/absl/strings",
+  ]
+}
+
+if (rtc_enable_protobuf) {
+  proto_library("metric_proto") {
+    visibility = [ "*" ]
+    sources = [ "proto/metric.proto" ]
+    proto_out_dir = "api/test/metrics/proto"
+    cc_generator_options = "lite"
+  }
+}
+
+rtc_library("metrics_set_proto_file_exporter") {
+  visibility = [ "*" ]
+  testonly = true
+  sources = [
+    "metrics_set_proto_file_exporter.cc",
+    "metrics_set_proto_file_exporter.h",
+  ]
+  deps = [
+    ":metric",
+    ":metrics_exporter",
+    "../..:array_view",
+    "../../../rtc_base:logging",
+    "../../../test:fileutils",
+  ]
+
+  if (rtc_enable_protobuf) {
+    deps += [ ":metric_proto" ]
+  }
+}
+
+rtc_library("print_result_proxy_metrics_exporter") {
+  visibility = [ "*" ]
+  testonly = true
+  sources = [
+    "print_result_proxy_metrics_exporter.cc",
+    "print_result_proxy_metrics_exporter.h",
+  ]
+  deps = [
+    ":metric",
+    ":metrics_exporter",
+    "../..:array_view",
+    "../../../test:perf_test",
+  ]
+}
+
+rtc_library("global_metrics_logger_and_exporter") {
+  visibility = [ "*" ]
+  sources = [
+    "global_metrics_logger_and_exporter.cc",
+    "global_metrics_logger_and_exporter.h",
+  ]
+  deps = [
+    ":metrics_exporter",
+    ":metrics_logger",
+    "../../../rtc_base:checks",
+    "../../../system_wrappers",
+  ]
+}
+
+if (rtc_include_tests) {
+  rtc_library("metrics_logger_test") {
+    testonly = true
+    sources = [ "metrics_logger_test.cc" ]
+    deps = [
+      ":metric",
+      ":metrics_logger",
+      "../../../system_wrappers",
+      "../../../test:test_support",
+      "../../numerics",
+    ]
+    absl_deps = [ "//third_party/abseil-cpp/absl/types:optional" ]
+  }
+
+  rtc_library("metrics_accumulator_test") {
+    testonly = true
+    sources = [ "metrics_accumulator_test.cc" ]
+    deps = [
+      ":metric",
+      ":metrics_accumulator",
+      "../../../test:test_support",
+      "../../units:timestamp",
+    ]
+    absl_deps = [ "//third_party/abseil-cpp/absl/types:optional" ]
+  }
+
+  rtc_library("stdout_metrics_exporter_test") {
+    testonly = true
+    sources = [ "stdout_metrics_exporter_test.cc" ]
+    deps = [
+      ":metric",
+      ":stdout_metrics_exporter",
+      "../../../test:test_support",
+      "../../units:timestamp",
+    ]
+  }
+
+  rtc_library("print_result_proxy_metrics_exporter_test") {
+    testonly = true
+    sources = [ "print_result_proxy_metrics_exporter_test.cc" ]
+    deps = [
+      ":metric",
+      ":print_result_proxy_metrics_exporter",
+      "../../../test:test_support",
+      "../../units:timestamp",
+    ]
+  }
+
+  rtc_library("global_metrics_logger_and_exporter_test") {
+    testonly = true
+    sources = [ "global_metrics_logger_and_exporter_test.cc" ]
+    deps = [
+      ":global_metrics_logger_and_exporter",
+      ":metric",
+      ":metrics_exporter",
+      ":metrics_logger",
+      "../../../system_wrappers",
+      "../../../test:test_support",
+    ]
+    absl_deps = [ "//third_party/abseil-cpp/absl/types:optional" ]
+  }
+
+  if (rtc_enable_protobuf) {
+    rtc_library("metrics_set_proto_file_exporter_test") {
+      testonly = true
+      sources = [ "metrics_set_proto_file_exporter_test.cc" ]
+      deps = [
+        ":metric",
+        ":metric_proto",
+        ":metrics_set_proto_file_exporter",
+        "../../../rtc_base:protobuf_utils",
+        "../../../test:fileutils",
+        "../../../test:test_support",
+        "../../units:timestamp",
+      ]
+    }
+
+    rtc_library("chrome_perf_dashboard_metrics_exporter_test") {
+      testonly = true
+      sources = [ "chrome_perf_dashboard_metrics_exporter_test.cc" ]
+      deps = [
+        ":chrome_perf_dashboard_metrics_exporter",
+        ":metric",
+        "../../../api/units:timestamp",
+        "../../../test:fileutils",
+        "../../../test:test_support",
+        "//third_party/catapult/tracing/tracing:histogram",
+      ]
+    }
+  }
+}
diff --git a/third_party/libwebrtc/api/test/metrics/DEPS b/third_party/libwebrtc/api/test/metrics/DEPS
new file mode 100644
index 0000000000..74889c61c7
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/DEPS
@@ -0,0 +1,14 @@
+specific_include_rules = {
+  "metrics_logger_and_exporter\.h": [
+    "+rtc_base/synchronization/mutex.h",
+    "+system_wrappers/include/clock.h",
+  ],
+  "metrics_logger\.h": [
+    "+rtc_base/synchronization/mutex.h",
+    "+system_wrappers/include/clock.h",
+  ],
+  "metrics_accumulator\.h": [
+    "+rtc_base/synchronization/mutex.h",
+    "+rtc_base/thread_annotations.h",
+  ],
+}
diff --git a/third_party/libwebrtc/api/test/metrics/chrome_perf_dashboard_metrics_exporter.cc b/third_party/libwebrtc/api/test/metrics/chrome_perf_dashboard_metrics_exporter.cc
new file mode 100644
index 0000000000..018d110b12
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/chrome_perf_dashboard_metrics_exporter.cc
@@ -0,0 +1,146 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/chrome_perf_dashboard_metrics_exporter.h"
+
+#include <stdio.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "absl/memory/memory.h"
+#include "absl/strings/string_view.h"
+#include "api/array_view.h"
+#include "api/test/metrics/metric.h"
+#include "test/testsupport/file_utils.h"
+#include "test/testsupport/perf_test_histogram_writer.h"
+#include "test/testsupport/perf_test_result_writer.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+std::string ToChromePerfDashboardUnit(Unit unit) {
+  switch (unit) {
+    case Unit::kMilliseconds:
+      return "msBestFitFormat";
+    case Unit::kPercent:
+      return "n%";
+    case Unit::kBytes:
+      return "sizeInBytes";
+    case Unit::kKilobitsPerSecond:
+      // Chrome Perf Dashboard doesn't have kpbs units, so we change the unit
+      // and value accordingly.
+      return "bytesPerSecond";
+    case Unit::kHertz:
+      return "Hz";
+    case Unit::kUnitless:
+      return "unitless";
+    case Unit::kCount:
+      return "count";
+  }
+}
+
+double ToChromePerfDashboardValue(double value, Unit unit) {
+  switch (unit) {
+    case Unit::kKilobitsPerSecond:
+      // Chrome Perf Dashboard doesn't have kpbs units, so we change the unit
+      // and value accordingly.
+      return value * 1000 / 8;
+    default:
+      return value;
+  }
+}
+
+ImproveDirection ToChromePerfDashboardImproveDirection(
+    ImprovementDirection direction) {
+  switch (direction) {
+    case ImprovementDirection::kBiggerIsBetter:
+      return ImproveDirection::kBiggerIsBetter;
+    case ImprovementDirection::kNeitherIsBetter:
+      return ImproveDirection::kNone;
+    case ImprovementDirection::kSmallerIsBetter:
+      return ImproveDirection::kSmallerIsBetter;
+  }
+}
+
+bool WriteMetricsToFile(const std::string& path, const std::string& data) {
+  CreateDir(DirName(path));
+  FILE* output = fopen(path.c_str(), "wb");
+  if (output == NULL) {
+    printf("Failed to write to %s.\n", path.c_str());
+    return false;
+  }
+  size_t written = fwrite(data.c_str(), sizeof(char), data.size(), output);
+  fclose(output);
+
+  if (written != data.size()) {
+    size_t expected = data.size();
+    printf("Wrote %zu, tried to write %zu\n", written, expected);
+    return false;
+  }
+  return true;
+}
+
+bool IsEmpty(const Metric::Stats& stats) {
+  return !stats.mean.has_value() && !stats.stddev.has_value() &&
+         !stats.min.has_value() && !stats.max.has_value();
+}
+
+}  // namespace
+
+ChromePerfDashboardMetricsExporter::ChromePerfDashboardMetricsExporter(
+    absl::string_view export_file_path)
+    : export_file_path_(export_file_path) {}
+
+bool ChromePerfDashboardMetricsExporter::Export(
+    rtc::ArrayView<const Metric> metrics) {
+  std::unique_ptr<PerfTestResultWriter> writer =
+      absl::WrapUnique<PerfTestResultWriter>(CreateHistogramWriter());
+  for (const Metric& metric : metrics) {
+    if (metric.time_series.samples.empty() && IsEmpty(metric.stats)) {
+      // If there were no data collected for the metric it is expected that 0
+      // will be exported, so add 0 to the samples.
+      writer->LogResult(
+          metric.name, metric.test_case,
+          ToChromePerfDashboardValue(0, metric.unit),
+          ToChromePerfDashboardUnit(metric.unit),
+          /*important=*/false,
+          ToChromePerfDashboardImproveDirection(metric.improvement_direction));
+      continue;
+    }
+
+    if (metric.time_series.samples.empty()) {
+      writer->LogResultMeanAndError(
+          metric.name, metric.test_case,
+          ToChromePerfDashboardValue(*metric.stats.mean, metric.unit),
+          ToChromePerfDashboardValue(*metric.stats.stddev, metric.unit),
+          ToChromePerfDashboardUnit(metric.unit),
+          /*important=*/false,
+          ToChromePerfDashboardImproveDirection(metric.improvement_direction));
+      continue;
+    }
+
+    std::vector<double> samples(metric.time_series.samples.size());
+    for (size_t i = 0; i < metric.time_series.samples.size(); ++i) {
+      samples[i] = ToChromePerfDashboardValue(
+          metric.time_series.samples[i].value, metric.unit);
+    }
+    writer->LogResultList(
+        metric.name, metric.test_case, samples,
+        ToChromePerfDashboardUnit(metric.unit),
+        /*important=*/false,
+        ToChromePerfDashboardImproveDirection(metric.improvement_direction));
+  }
+  return WriteMetricsToFile(export_file_path_, writer->Serialize());
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/chrome_perf_dashboard_metrics_exporter.h b/third_party/libwebrtc/api/test/metrics/chrome_perf_dashboard_metrics_exporter.h
new file mode 100644
index 0000000000..dda17a08c6
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/chrome_perf_dashboard_metrics_exporter.h
@@ -0,0 +1,41 @@
+/*
+ *  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 API_TEST_METRICS_CHROME_PERF_DASHBOARD_METRICS_EXPORTER_H_
+#define API_TEST_METRICS_CHROME_PERF_DASHBOARD_METRICS_EXPORTER_H_
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "api/array_view.h"
+#include "api/test/metrics/metric.h"
+#include "api/test/metrics/metrics_exporter.h"
+
+namespace webrtc {
+namespace test {
+
+// Exports all collected metrics in the Chrome Perf Dashboard proto format.
+class ChromePerfDashboardMetricsExporter : public MetricsExporter {
+ public:
+  // `export_file_path` - path where the proto file will be written.
+  explicit ChromePerfDashboardMetricsExporter(
+      absl::string_view export_file_path);
+  ~ChromePerfDashboardMetricsExporter() override = default;
+
+  bool Export(rtc::ArrayView<const Metric> metrics) override;
+
+ private:
+  const std::string export_file_path_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_METRICS_CHROME_PERF_DASHBOARD_METRICS_EXPORTER_H_
diff --git a/third_party/libwebrtc/api/test/metrics/chrome_perf_dashboard_metrics_exporter_test.cc b/third_party/libwebrtc/api/test/metrics/chrome_perf_dashboard_metrics_exporter_test.cc
new file mode 100644
index 0000000000..5d3136f49a
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/chrome_perf_dashboard_metrics_exporter_test.cc
@@ -0,0 +1,248 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/chrome_perf_dashboard_metrics_exporter.h"
+
+#include <fstream>
+#include <map>
+#include <vector>
+
+#include "api/test/metrics/metric.h"
+#include "api/units/timestamp.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+#include "test/testsupport/file_utils.h"
+#include "third_party/catapult/tracing/tracing/value/histogram.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+using ::testing::DoubleNear;
+using ::testing::Eq;
+using ::testing::Test;
+
+namespace proto = ::catapult::tracing::tracing::proto;
+
+std::map<std::string, std::string> DefaultMetadata() {
+  return std::map<std::string, std::string>{{"key", "value"}};
+}
+
+Metric::TimeSeries::Sample Sample(double value) {
+  return Metric::TimeSeries::Sample{.timestamp = Timestamp::Seconds(1),
+                                    .value = value,
+                                    .sample_metadata = DefaultMetadata()};
+}
+
+std::string ReadFileAsString(const std::string& filename) {
+  std::ifstream infile(filename, std::ios_base::binary);
+  auto buffer = std::vector<char>(std::istreambuf_iterator<char>(infile),
+                                  std::istreambuf_iterator<char>());
+  return std::string(buffer.begin(), buffer.end());
+}
+
+class ChromePerfDashboardMetricsExporterTest : public Test {
+ protected:
+  ~ChromePerfDashboardMetricsExporterTest() override = default;
+
+  void SetUp() override {
+    temp_filename_ = webrtc::test::TempFilename(
+        webrtc::test::OutputPath(),
+        "chrome_perf_dashboard_metrics_exporter_test");
+  }
+
+  void TearDown() override {
+    ASSERT_TRUE(webrtc::test::RemoveFile(temp_filename_));
+  }
+
+  std::string temp_filename_;
+};
+
+TEST_F(ChromePerfDashboardMetricsExporterTest, ExportMetricFormatCorrect) {
+  Metric metric1{
+      .name = "test_metric1",
+      .unit = Unit::kMilliseconds,
+      .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+      .test_case = "test_case_name1",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(10), Sample(20)}},
+      .stats =
+          Metric::Stats{.mean = 15.0, .stddev = 5.0, .min = 10.0, .max = 20.0}};
+  Metric metric2{
+      .name = "test_metric2",
+      .unit = Unit::kKilobitsPerSecond,
+      .improvement_direction = ImprovementDirection::kSmallerIsBetter,
+      .test_case = "test_case_name2",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(20), Sample(40)}},
+      .stats = Metric::Stats{
+          .mean = 30.0, .stddev = 10.0, .min = 20.0, .max = 40.0}};
+
+  ChromePerfDashboardMetricsExporter exporter(temp_filename_);
+
+  ASSERT_TRUE(exporter.Export(std::vector<Metric>{metric1, metric2}));
+  proto::HistogramSet actual_histogram_set;
+  actual_histogram_set.ParseFromString(ReadFileAsString(temp_filename_));
+  EXPECT_THAT(actual_histogram_set.histograms().size(), Eq(2));
+
+  // Validate output for `metric1`
+  EXPECT_THAT(actual_histogram_set.histograms(0).name(), Eq("test_metric1"));
+  EXPECT_THAT(actual_histogram_set.histograms(0).unit().unit(),
+              Eq(proto::Unit::MS_BEST_FIT_FORMAT));
+  EXPECT_THAT(actual_histogram_set.histograms(0).unit().improvement_direction(),
+              Eq(proto::ImprovementDirection::BIGGER_IS_BETTER));
+  EXPECT_THAT(
+      actual_histogram_set.histograms(0).diagnostics().diagnostic_map().size(),
+      Eq(1lu));
+  EXPECT_THAT(actual_histogram_set.histograms(0)
+                  .diagnostics()
+                  .diagnostic_map()
+                  .at("stories")
+                  .generic_set()
+                  .values(0),
+              Eq("\"test_case_name1\""));
+  EXPECT_THAT(actual_histogram_set.histograms(0).sample_values().size(), Eq(2));
+  EXPECT_THAT(actual_histogram_set.histograms(0).sample_values(0), Eq(10.0));
+  EXPECT_THAT(actual_histogram_set.histograms(0).sample_values(1), Eq(20.0));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().count(), Eq(2));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().max(), Eq(20));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().meanlogs(),
+              DoubleNear(2.64916, 0.1));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().mean(), Eq(15));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().min(), Eq(10));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().sum(), Eq(30));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().variance(), Eq(50));
+
+  // Validate output for `metric2`
+  EXPECT_THAT(actual_histogram_set.histograms(1).name(), Eq("test_metric2"));
+  EXPECT_THAT(actual_histogram_set.histograms(1).unit().unit(),
+              Eq(proto::Unit::BYTES_PER_SECOND));
+  EXPECT_THAT(actual_histogram_set.histograms(1).unit().improvement_direction(),
+              Eq(proto::ImprovementDirection::SMALLER_IS_BETTER));
+  EXPECT_THAT(
+      actual_histogram_set.histograms(1).diagnostics().diagnostic_map().size(),
+      Eq(1lu));
+  EXPECT_THAT(actual_histogram_set.histograms(1)
+                  .diagnostics()
+                  .diagnostic_map()
+                  .at("stories")
+                  .generic_set()
+                  .values(0),
+              Eq("\"test_case_name2\""));
+  EXPECT_THAT(actual_histogram_set.histograms(1).sample_values().size(), Eq(2));
+  EXPECT_THAT(actual_histogram_set.histograms(1).sample_values(0), Eq(2500.0));
+  EXPECT_THAT(actual_histogram_set.histograms(1).sample_values(1), Eq(5000.0));
+  EXPECT_THAT(actual_histogram_set.histograms(1).running().count(), Eq(2));
+  EXPECT_THAT(actual_histogram_set.histograms(1).running().max(), Eq(5000));
+  EXPECT_THAT(actual_histogram_set.histograms(1).running().meanlogs(),
+              DoubleNear(8.17062, 0.1));
+  EXPECT_THAT(actual_histogram_set.histograms(1).running().mean(), Eq(3750));
+  EXPECT_THAT(actual_histogram_set.histograms(1).running().min(), Eq(2500));
+  EXPECT_THAT(actual_histogram_set.histograms(1).running().sum(), Eq(7500));
+  EXPECT_THAT(actual_histogram_set.histograms(1).running().variance(),
+              Eq(3125000));
+}
+
+TEST_F(ChromePerfDashboardMetricsExporterTest,
+       ExportEmptyMetricExportsZeroValue) {
+  Metric metric{.name = "test_metric",
+                .unit = Unit::kMilliseconds,
+                .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+                .test_case = "test_case_name",
+                .metric_metadata = DefaultMetadata(),
+                .time_series = Metric::TimeSeries{.samples = {}},
+                .stats = Metric::Stats{}};
+
+  ChromePerfDashboardMetricsExporter exporter(temp_filename_);
+
+  ASSERT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  proto::HistogramSet actual_histogram_set;
+  actual_histogram_set.ParseFromString(ReadFileAsString(temp_filename_));
+  EXPECT_THAT(actual_histogram_set.histograms().size(), Eq(1));
+
+  // Validate values for `metric`
+  EXPECT_THAT(actual_histogram_set.histograms(0).sample_values().size(), Eq(1));
+  EXPECT_THAT(actual_histogram_set.histograms(0).sample_values(0), Eq(0.0));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().count(), Eq(1));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().max(),
+              DoubleNear(0, 1e-6));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().meanlogs(), Eq(0));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().mean(), Eq(0));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().min(), Eq(0));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().sum(), Eq(0));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().variance(), Eq(0));
+}
+
+TEST_F(ChromePerfDashboardMetricsExporterTest,
+       ExportMetricWithOnlyStatsExportsMeanValues) {
+  Metric metric{.name = "test_metric",
+                .unit = Unit::kMilliseconds,
+                .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+                .test_case = "test_case_name",
+                .metric_metadata = DefaultMetadata(),
+                .time_series = Metric::TimeSeries{.samples = {}},
+                .stats = Metric::Stats{
+                    .mean = 15.0, .stddev = 5.0, .min = 10.0, .max = 20.0}};
+
+  ChromePerfDashboardMetricsExporter exporter(temp_filename_);
+
+  ASSERT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  proto::HistogramSet actual_histogram_set;
+  actual_histogram_set.ParseFromString(ReadFileAsString(temp_filename_));
+  EXPECT_THAT(actual_histogram_set.histograms().size(), Eq(1));
+
+  // Validate values for `metric`
+  EXPECT_THAT(actual_histogram_set.histograms(0).sample_values().size(), Eq(1));
+  EXPECT_THAT(actual_histogram_set.histograms(0).sample_values(0), Eq(15.0));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().count(), Eq(1));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().max(), Eq(15));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().meanlogs(),
+              DoubleNear(2.70805, 0.1));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().mean(), Eq(15));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().min(), Eq(15));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().sum(), Eq(15));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().variance(), Eq(0));
+}
+
+TEST_F(ChromePerfDashboardMetricsExporterTest,
+       ExportMetricWithOnlyStatsConvertsMeanValuesWhenRequired) {
+  Metric metric{.name = "test_metric",
+                .unit = Unit::kKilobitsPerSecond,
+                .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+                .test_case = "test_case_name",
+                .metric_metadata = DefaultMetadata(),
+                .time_series = Metric::TimeSeries{.samples = {}},
+                .stats = Metric::Stats{
+                    .mean = 15.0, .stddev = 5.0, .min = 10.0, .max = 20.0}};
+
+  ChromePerfDashboardMetricsExporter exporter(temp_filename_);
+
+  ASSERT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  proto::HistogramSet actual_histogram_set;
+  actual_histogram_set.ParseFromString(ReadFileAsString(temp_filename_));
+  EXPECT_THAT(actual_histogram_set.histograms().size(), Eq(1));
+
+  // Validate values for `metric`
+  EXPECT_THAT(actual_histogram_set.histograms(0).sample_values().size(), Eq(1));
+  EXPECT_THAT(actual_histogram_set.histograms(0).sample_values(0), Eq(1875.0));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().count(), Eq(1));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().max(), Eq(1875));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().meanlogs(),
+              DoubleNear(7.53636, 0.1));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().mean(), Eq(1875));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().min(), Eq(1875));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().sum(), Eq(1875));
+  EXPECT_THAT(actual_histogram_set.histograms(0).running().variance(), Eq(0));
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/global_metrics_logger_and_exporter.cc b/third_party/libwebrtc/api/test/metrics/global_metrics_logger_and_exporter.cc
new file mode 100644
index 0000000000..2d42a976aa
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/global_metrics_logger_and_exporter.cc
@@ -0,0 +1,42 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/global_metrics_logger_and_exporter.h"
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "api/test/metrics/metrics_exporter.h"
+#include "api/test/metrics/metrics_logger.h"
+#include "rtc_base/checks.h"
+#include "system_wrappers/include/clock.h"
+
+namespace webrtc {
+namespace test {
+
+DefaultMetricsLogger* GetGlobalMetricsLogger() {
+  static DefaultMetricsLogger* logger_ =
+      new DefaultMetricsLogger(Clock::GetRealTimeClock());
+  return logger_;
+}
+
+bool ExportPerfMetric(MetricsLogger& logger,
+                      std::vector<std::unique_ptr<MetricsExporter>> exporters) {
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  bool success = true;
+  for (auto& exporter : exporters) {
+    bool export_result = exporter->Export(metrics);
+    success = success && export_result;
+  }
+  return success;
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/global_metrics_logger_and_exporter.h b/third_party/libwebrtc/api/test/metrics/global_metrics_logger_and_exporter.h
new file mode 100644
index 0000000000..f77ff1c737
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/global_metrics_logger_and_exporter.h
@@ -0,0 +1,32 @@
+/*
+ *  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 API_TEST_METRICS_GLOBAL_METRICS_LOGGER_AND_EXPORTER_H_
+#define API_TEST_METRICS_GLOBAL_METRICS_LOGGER_AND_EXPORTER_H_
+
+#include <memory>
+#include <vector>
+
+#include "api/test/metrics/metrics_exporter.h"
+#include "api/test/metrics/metrics_logger.h"
+
+namespace webrtc {
+namespace test {
+
+// Returns non-null global `MetricsLogger` to log metrics.
+DefaultMetricsLogger* GetGlobalMetricsLogger();
+
+bool ExportPerfMetric(MetricsLogger& logger,
+                      std::vector<std::unique_ptr<MetricsExporter>> exporters);
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_METRICS_GLOBAL_METRICS_LOGGER_AND_EXPORTER_H_
diff --git a/third_party/libwebrtc/api/test/metrics/global_metrics_logger_and_exporter_test.cc b/third_party/libwebrtc/api/test/metrics/global_metrics_logger_and_exporter_test.cc
new file mode 100644
index 0000000000..567b3da9e3
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/global_metrics_logger_and_exporter_test.cc
@@ -0,0 +1,131 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/global_metrics_logger_and_exporter.h"
+
+#include <map>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/test/metrics/metric.h"
+#include "api/test/metrics/metrics_exporter.h"
+#include "api/test/metrics/metrics_logger.h"
+#include "system_wrappers/include/clock.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+using ::testing::Eq;
+using ::testing::IsEmpty;
+
+std::map<std::string, std::string> DefaultMetadata() {
+  return std::map<std::string, std::string>{{"key", "value"}};
+}
+
+struct TestMetricsExporterFactory {
+ public:
+  std::unique_ptr<MetricsExporter> CreateExporter() {
+    return std::make_unique<TestMetricsExporter>(this, /*export_result=*/true);
+  }
+
+  std::unique_ptr<MetricsExporter> CreateFailureExporter() {
+    return std::make_unique<TestMetricsExporter>(this, /*export_result=*/false);
+  }
+
+  std::vector<Metric> exported_metrics;
+
+ private:
+  class TestMetricsExporter : public MetricsExporter {
+   public:
+    TestMetricsExporter(TestMetricsExporterFactory* factory, bool export_result)
+        : factory_(factory), export_result_(export_result) {}
+    ~TestMetricsExporter() override = default;
+
+    bool Export(rtc::ArrayView<const Metric> metrics) override {
+      factory_->exported_metrics =
+          std::vector<Metric>(metrics.begin(), metrics.end());
+      return export_result_;
+    }
+
+    TestMetricsExporterFactory* factory_;
+    bool export_result_;
+  };
+};
+
+TEST(ExportPerfMetricTest, CollectedMetricsAreExporter) {
+  TestMetricsExporterFactory exporter_factory;
+
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  logger.LogSingleValueMetric(
+      "metric_name", "test_case_name",
+      /*value=*/10, Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+      std::map<std::string, std::string>{{"key", "value"}});
+
+  std::vector<std::unique_ptr<MetricsExporter>> exporters;
+  exporters.push_back(exporter_factory.CreateExporter());
+  ASSERT_TRUE(ExportPerfMetric(logger, std::move(exporters)));
+
+  std::vector<Metric> metrics = exporter_factory.exported_metrics;
+  ASSERT_THAT(metrics.size(), Eq(1lu));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kMilliseconds));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kBiggerIsBetter));
+  EXPECT_THAT(metric.metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key", "value"}}));
+  ASSERT_THAT(metric.time_series.samples.size(), Eq(1lu));
+  EXPECT_THAT(metric.time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metric.time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{}));
+  ASSERT_THAT(metric.stats.mean, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.stddev, absl::nullopt);
+  ASSERT_THAT(metric.stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.max, absl::optional<double>(10.0));
+}
+
+TEST(ExportPerfMetricTest, OneFailedExporterDoesNotPreventExportToOthers) {
+  TestMetricsExporterFactory exporter_factory1;
+  TestMetricsExporterFactory exporter_factory2;
+  TestMetricsExporterFactory exporter_factory3;
+
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  logger.LogSingleValueMetric("metric_name", "test_case_name",
+                              /*value=*/10, Unit::kMilliseconds,
+                              ImprovementDirection::kBiggerIsBetter,
+                              DefaultMetadata());
+
+  std::vector<std::unique_ptr<MetricsExporter>> exporters;
+  exporters.push_back(exporter_factory1.CreateExporter());
+  exporters.push_back(exporter_factory2.CreateFailureExporter());
+  exporters.push_back(exporter_factory3.CreateExporter());
+  ASSERT_FALSE(ExportPerfMetric(logger, std::move(exporters)));
+
+  std::vector<Metric> metrics1 = exporter_factory1.exported_metrics;
+  std::vector<Metric> metrics2 = exporter_factory2.exported_metrics;
+  std::vector<Metric> metrics3 = exporter_factory3.exported_metrics;
+  ASSERT_THAT(metrics1.size(), Eq(1lu))
+      << metrics1[0].name << "; " << metrics1[1].name;
+  EXPECT_THAT(metrics1[0].name, Eq("metric_name"));
+  ASSERT_THAT(metrics2.size(), Eq(1lu));
+  EXPECT_THAT(metrics2[0].name, Eq("metric_name"));
+  ASSERT_THAT(metrics3.size(), Eq(1lu));
+  EXPECT_THAT(metrics3[0].name, Eq("metric_name"));
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/metric.cc b/third_party/libwebrtc/api/test/metrics/metric.cc
new file mode 100644
index 0000000000..3c30f36f49
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metric.cc
@@ -0,0 +1,48 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/metric.h"
+
+#include <string>
+
+namespace webrtc {
+namespace test {
+
+absl::string_view ToString(Unit unit) {
+  switch (unit) {
+    case Unit::kMilliseconds:
+      return "Milliseconds";
+    case Unit::kPercent:
+      return "Percent";
+    case Unit::kBytes:
+      return "Bytes";
+    case Unit::kKilobitsPerSecond:
+      return "KilobitsPerSecond";
+    case Unit::kHertz:
+      return "Hertz";
+    case Unit::kUnitless:
+      return "Unitless";
+    case Unit::kCount:
+      return "Count";
+  }
+}
+
+absl::string_view ToString(ImprovementDirection direction) {
+  switch (direction) {
+    case ImprovementDirection::kBiggerIsBetter:
+      return "BiggerIsBetter";
+    case ImprovementDirection::kNeitherIsBetter:
+      return "NeitherIsBetter";
+    case ImprovementDirection::kSmallerIsBetter:
+      return "SmallerIsBetter";
+  }
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/metric.h b/third_party/libwebrtc/api/test/metrics/metric.h
new file mode 100644
index 0000000000..17c1755f95
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metric.h
@@ -0,0 +1,96 @@
+/*
+ *  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 API_TEST_METRICS_METRIC_H_
+#define API_TEST_METRICS_METRIC_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/units/timestamp.h"
+
+namespace webrtc {
+namespace test {
+
+enum class Unit {
+  kMilliseconds,
+  kPercent,
+  kBytes,
+  kKilobitsPerSecond,
+  kHertz,
+  // General unitless value. Can be used either for dimensionless quantities
+  // (ex ratio) or for units not presented in this enum and too specific to add
+  // to this enum.
+  kUnitless,
+  kCount
+};
+
+absl::string_view ToString(Unit unit);
+
+enum class ImprovementDirection {
+  kBiggerIsBetter,
+  kNeitherIsBetter,
+  kSmallerIsBetter
+};
+
+absl::string_view ToString(ImprovementDirection direction);
+
+struct Metric {
+  struct TimeSeries {
+    struct Sample {
+      // Timestamp in microseconds associated with a sample. For example,
+      // the timestamp when the sample was collected.
+      webrtc::Timestamp timestamp;
+      double value;
+      // Metadata associated with this particular sample.
+      std::map<std::string, std::string> sample_metadata;
+    };
+
+    // All samples collected for this metric. It can be empty if the Metric
+    // object only contains `stats`.
+    std::vector<Sample> samples;
+  };
+
+  // Contains metric's precomputed statistics based on the `time_series` or if
+  // `time_series` is omitted (has 0 samples) contains precomputed statistics
+  // provided by the metric's calculator.
+  struct Stats {
+    // Sample mean of the metric
+    // (https://en.wikipedia.org/wiki/Sample_mean_and_covariance).
+    absl::optional<double> mean;
+    // Standard deviation (https://en.wikipedia.org/wiki/Standard_deviation).
+    // Is undefined if `time_series` contains only a single value.
+    absl::optional<double> stddev;
+    absl::optional<double> min;
+    absl::optional<double> max;
+  };
+
+  // Metric name, for example PSNR, SSIM, decode_time, etc.
+  std::string name;
+  Unit unit;
+  ImprovementDirection improvement_direction;
+  // If the metric is generated by a test, this field can be used to specify
+  // this information.
+  std::string test_case;
+  // Metadata associated with the whole metric.
+  std::map<std::string, std::string> metric_metadata;
+  // Contains all samples of the metric collected during test execution.
+  // It can be empty if the user only stores precomputed statistics into
+  // `stats`.
+  TimeSeries time_series;
+  Stats stats;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_METRICS_METRIC_H_
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_accumulator.cc b/third_party/libwebrtc/api/test/metrics/metrics_accumulator.cc
new file mode 100644
index 0000000000..c34396be97
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_accumulator.cc
@@ -0,0 +1,132 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/metrics_accumulator.h"
+
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "api/numerics/samples_stats_counter.h"
+#include "api/test/metrics/metric.h"
+#include "api/units/timestamp.h"
+#include "rtc_base/synchronization/mutex.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+Metric::Stats ToStats(const SamplesStatsCounter& values) {
+  if (values.IsEmpty()) {
+    return Metric::Stats();
+  }
+  return Metric::Stats{.mean = values.GetAverage(),
+                       .stddev = values.GetStandardDeviation(),
+                       .min = values.GetMin(),
+                       .max = values.GetMax()};
+}
+
+Metric SetTimeseries(const Metric& prototype,
+                     const SamplesStatsCounter& counter) {
+  Metric output(prototype);
+  Metric::TimeSeries time_series;
+  for (const SamplesStatsCounter::StatsSample& sample :
+       counter.GetTimedSamples()) {
+    time_series.samples.push_back(
+        Metric::TimeSeries::Sample{.timestamp = sample.time,
+                                   .value = sample.value,
+                                   .sample_metadata = sample.metadata});
+  }
+  output.time_series = std::move(time_series);
+  output.stats = ToStats(counter);
+  return output;
+}
+
+}  // namespace
+
+bool operator<(const MetricsAccumulator::MetricKey& a,
+               const MetricsAccumulator::MetricKey& b) {
+  if (a.test_case_name < b.test_case_name) {
+    return true;
+  } else if (a.test_case_name > b.test_case_name) {
+    return false;
+  } else {
+    return a.metric_name < b.metric_name;
+  }
+}
+
+bool MetricsAccumulator::AddSample(
+    absl::string_view metric_name,
+    absl::string_view test_case_name,
+    double value,
+    Timestamp timestamp,
+    std::map<std::string, std::string> point_metadata) {
+  MutexLock lock(&mutex_);
+  bool created;
+  MetricValue* metric_value =
+      GetOrCreateMetric(metric_name, test_case_name, &created);
+  metric_value->counter.AddSample(
+      SamplesStatsCounter::StatsSample{.value = value,
+                                       .time = timestamp,
+                                       .metadata = std::move(point_metadata)});
+  return created;
+}
+
+bool MetricsAccumulator::AddMetricMetadata(
+    absl::string_view metric_name,
+    absl::string_view test_case_name,
+    Unit unit,
+    ImprovementDirection improvement_direction,
+    std::map<std::string, std::string> metric_metadata) {
+  MutexLock lock(&mutex_);
+  bool created;
+  MetricValue* metric_value =
+      GetOrCreateMetric(metric_name, test_case_name, &created);
+  metric_value->metric.unit = unit;
+  metric_value->metric.improvement_direction = improvement_direction;
+  metric_value->metric.metric_metadata = std::move(metric_metadata);
+  return created;
+}
+
+std::vector<Metric> MetricsAccumulator::GetCollectedMetrics() const {
+  MutexLock lock(&mutex_);
+  std::vector<Metric> out;
+  out.reserve(metrics_.size());
+  for (const auto& [unused_key, metric_value] : metrics_) {
+    out.push_back(SetTimeseries(metric_value.metric, metric_value.counter));
+  }
+  return out;
+}
+
+MetricsAccumulator::MetricValue* MetricsAccumulator::GetOrCreateMetric(
+    absl::string_view metric_name,
+    absl::string_view test_case_name,
+    bool* created) {
+  MetricKey key(metric_name, test_case_name);
+  auto it = metrics_.find(key);
+  if (it != metrics_.end()) {
+    *created = false;
+    return &it->second;
+  }
+  *created = true;
+
+  Metric metric{
+      .name = key.metric_name,
+      .unit = Unit::kUnitless,
+      .improvement_direction = ImprovementDirection::kNeitherIsBetter,
+      .test_case = key.test_case_name,
+  };
+  return &metrics_.emplace(key, MetricValue{.metric = std::move(metric)})
+              .first->second;
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_accumulator.h b/third_party/libwebrtc/api/test/metrics/metrics_accumulator.h
new file mode 100644
index 0000000000..c75bd9429c
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_accumulator.h
@@ -0,0 +1,99 @@
+/*
+ *  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 API_TEST_METRICS_METRICS_ACCUMULATOR_H_
+#define API_TEST_METRICS_METRICS_ACCUMULATOR_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "api/numerics/samples_stats_counter.h"
+#include "api/test/metrics/metric.h"
+#include "api/units/timestamp.h"
+#include "rtc_base/synchronization/mutex.h"
+#include "rtc_base/thread_annotations.h"
+
+namespace webrtc {
+namespace test {
+
+// Accumulates metrics' samples internally and provides API to get collected
+// ones.
+//
+// This object is thread safe.
+class MetricsAccumulator {
+ public:
+  MetricsAccumulator() = default;
+
+  // Adds sample for the specified `metric_name` within specified
+  // `test_case_name`. If it is the first time when this combination of
+  // `metric_name` and `test_case_name` is used, creates a new Metric to collect
+  // samples, otherwise adds a sample to the previously created Metric.
+  //
+  // By default metric will use `Unit::kUnitless` and
+  // `ImprovementDirection::kNeitherIsBetter`.
+  //
+  // `point_metadata` - the metadata to be added to the single data point that
+  // this method adds to the Metric (it is not a metric global metadata).
+  //
+  // Returns true if a new metric was created and false otherwise.
+  bool AddSample(absl::string_view metric_name,
+                 absl::string_view test_case_name,
+                 double value,
+                 Timestamp timestamp,
+                 std::map<std::string, std::string> point_metadata = {});
+
+  // Adds metadata to the metric specified by `metric_name` within specified
+  // `test_case_name`. If such a metric doesn't exist, creates a new one,
+  // otherwise overrides previously recorded values.
+  //
+  // Returns true if a new metric was created and false otherwise.
+  bool AddMetricMetadata(
+      absl::string_view metric_name,
+      absl::string_view test_case_name,
+      Unit unit,
+      ImprovementDirection improvement_direction,
+      std::map<std::string, std::string> metric_metadata = {});
+
+  // Returns all metrics collected by this accumulator. No order guarantees
+  // provided.
+  std::vector<Metric> GetCollectedMetrics() const;
+
+ private:
+  struct MetricKey {
+    MetricKey(absl::string_view metric_name, absl::string_view test_case_name)
+        : metric_name(metric_name), test_case_name(test_case_name) {}
+
+    std::string metric_name;
+    std::string test_case_name;
+  };
+  friend bool operator<(const MetricKey& a, const MetricKey& b);
+
+  struct MetricValue {
+    SamplesStatsCounter counter;
+    Metric metric;
+  };
+
+  // Gets existing metrics or creates a new one. If metric was created `created`
+  // will be set to true.
+  MetricValue* GetOrCreateMetric(absl::string_view metric_name,
+                                 absl::string_view test_case_name,
+                                 bool* created)
+      RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_);
+
+  mutable Mutex mutex_;
+  std::map<MetricKey, MetricValue> metrics_ RTC_GUARDED_BY(mutex_);
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_METRICS_METRICS_ACCUMULATOR_H_
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_accumulator_test.cc b/third_party/libwebrtc/api/test/metrics/metrics_accumulator_test.cc
new file mode 100644
index 0000000000..677f523339
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_accumulator_test.cc
@@ -0,0 +1,315 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/metrics_accumulator.h"
+
+#include <map>
+#include <vector>
+
+#include "api/test/metrics/metric.h"
+#include "api/units/timestamp.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+using ::testing::Eq;
+using ::testing::IsEmpty;
+using ::testing::SizeIs;
+
+TEST(MetricsAccumulatorTest, AddSampleToTheNewMetricWillCreateOne) {
+  MetricsAccumulator accumulator;
+  ASSERT_TRUE(accumulator.AddSample(
+      "metric_name", "test_case_name",
+      /*value=*/10, Timestamp::Seconds(1),
+      /*point_metadata=*/std::map<std::string, std::string>{{"key", "value"}}));
+
+  std::vector<Metric> metrics = accumulator.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kUnitless));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kNeitherIsBetter));
+  EXPECT_THAT(metric.metric_metadata, IsEmpty());
+  ASSERT_THAT(metric.time_series.samples, SizeIs(1));
+  EXPECT_THAT(metric.time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metric.time_series.samples[0].timestamp,
+              Eq(Timestamp::Seconds(1)));
+  EXPECT_THAT(metric.time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"key", "value"}}));
+  ASSERT_THAT(metric.stats.mean, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.stddev, absl::optional<double>(0.0));
+  ASSERT_THAT(metric.stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.max, absl::optional<double>(10.0));
+}
+
+TEST(MetricsAccumulatorTest, AddSamplesToExistingMetricWontCreateNewOne) {
+  MetricsAccumulator accumulator;
+  ASSERT_TRUE(accumulator.AddSample(
+      "metric_name", "test_case_name",
+      /*value=*/10, Timestamp::Seconds(1),
+      /*point_metadata=*/
+      std::map<std::string, std::string>{{"key1", "value1"}}));
+  ASSERT_FALSE(accumulator.AddSample(
+      "metric_name", "test_case_name",
+      /*value=*/20, Timestamp::Seconds(2),
+      /*point_metadata=*/
+      std::map<std::string, std::string>{{"key2", "value2"}}));
+
+  std::vector<Metric> metrics = accumulator.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kUnitless));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kNeitherIsBetter));
+  EXPECT_THAT(metric.metric_metadata, IsEmpty());
+  ASSERT_THAT(metric.time_series.samples, SizeIs(2));
+  EXPECT_THAT(metric.time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metric.time_series.samples[0].timestamp,
+              Eq(Timestamp::Seconds(1)));
+  EXPECT_THAT(metric.time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"key1", "value1"}}));
+  EXPECT_THAT(metric.time_series.samples[1].value, Eq(20.0));
+  EXPECT_THAT(metric.time_series.samples[1].timestamp,
+              Eq(Timestamp::Seconds(2)));
+  EXPECT_THAT(metric.time_series.samples[1].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"key2", "value2"}}));
+  ASSERT_THAT(metric.stats.mean, absl::optional<double>(15.0));
+  ASSERT_THAT(metric.stats.stddev, absl::optional<double>(5.0));
+  ASSERT_THAT(metric.stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.max, absl::optional<double>(20.0));
+}
+
+TEST(MetricsAccumulatorTest, AddSampleToDifferentMetricsWillCreateBoth) {
+  MetricsAccumulator accumulator;
+  ASSERT_TRUE(accumulator.AddSample(
+      "metric_name1", "test_case_name1",
+      /*value=*/10, Timestamp::Seconds(1),
+      /*point_metadata=*/
+      std::map<std::string, std::string>{{"key1", "value1"}}));
+  ASSERT_TRUE(accumulator.AddSample(
+      "metric_name2", "test_case_name2",
+      /*value=*/20, Timestamp::Seconds(2),
+      /*point_metadata=*/
+      std::map<std::string, std::string>{{"key2", "value2"}}));
+
+  std::vector<Metric> metrics = accumulator.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(2));
+  EXPECT_THAT(metrics[0].name, Eq("metric_name1"));
+  EXPECT_THAT(metrics[0].test_case, Eq("test_case_name1"));
+  EXPECT_THAT(metrics[0].unit, Eq(Unit::kUnitless));
+  EXPECT_THAT(metrics[0].improvement_direction,
+              Eq(ImprovementDirection::kNeitherIsBetter));
+  EXPECT_THAT(metrics[0].metric_metadata, IsEmpty());
+  ASSERT_THAT(metrics[0].time_series.samples, SizeIs(1));
+  EXPECT_THAT(metrics[0].time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metrics[0].time_series.samples[0].timestamp,
+              Eq(Timestamp::Seconds(1)));
+  EXPECT_THAT(metrics[0].time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"key1", "value1"}}));
+  ASSERT_THAT(metrics[0].stats.mean, absl::optional<double>(10.0));
+  ASSERT_THAT(metrics[0].stats.stddev, absl::optional<double>(0.0));
+  ASSERT_THAT(metrics[0].stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metrics[0].stats.max, absl::optional<double>(10.0));
+  EXPECT_THAT(metrics[1].name, Eq("metric_name2"));
+  EXPECT_THAT(metrics[1].test_case, Eq("test_case_name2"));
+  EXPECT_THAT(metrics[1].unit, Eq(Unit::kUnitless));
+  EXPECT_THAT(metrics[1].improvement_direction,
+              Eq(ImprovementDirection::kNeitherIsBetter));
+  EXPECT_THAT(metrics[1].metric_metadata, IsEmpty());
+  ASSERT_THAT(metrics[1].time_series.samples, SizeIs(1));
+  EXPECT_THAT(metrics[1].time_series.samples[0].value, Eq(20.0));
+  EXPECT_THAT(metrics[1].time_series.samples[0].timestamp,
+              Eq(Timestamp::Seconds(2)));
+  EXPECT_THAT(metrics[1].time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"key2", "value2"}}));
+  ASSERT_THAT(metrics[1].stats.mean, absl::optional<double>(20.0));
+  ASSERT_THAT(metrics[1].stats.stddev, absl::optional<double>(0.0));
+  ASSERT_THAT(metrics[1].stats.min, absl::optional<double>(20.0));
+  ASSERT_THAT(metrics[1].stats.max, absl::optional<double>(20.0));
+}
+
+TEST(MetricsAccumulatorTest, AddMetadataToTheNewMetricWillCreateOne) {
+  MetricsAccumulator accumulator;
+  ASSERT_TRUE(accumulator.AddMetricMetadata(
+      "metric_name", "test_case_name", Unit::kMilliseconds,
+      ImprovementDirection::kBiggerIsBetter,
+      /*metric_metadata=*/
+      std::map<std::string, std::string>{{"key", "value"}}));
+
+  std::vector<Metric> metrics = accumulator.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kMilliseconds));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kBiggerIsBetter));
+  EXPECT_THAT(metric.metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key", "value"}}));
+  ASSERT_THAT(metric.time_series.samples, IsEmpty());
+  ASSERT_THAT(metric.stats.mean, absl::nullopt);
+  ASSERT_THAT(metric.stats.stddev, absl::nullopt);
+  ASSERT_THAT(metric.stats.min, absl::nullopt);
+  ASSERT_THAT(metric.stats.max, absl::nullopt);
+}
+
+TEST(MetricsAccumulatorTest,
+     AddMetadataToTheExistingMetricWillOverwriteValues) {
+  MetricsAccumulator accumulator;
+  ASSERT_TRUE(accumulator.AddMetricMetadata(
+      "metric_name", "test_case_name", Unit::kMilliseconds,
+      ImprovementDirection::kBiggerIsBetter,
+      /*metric_metadata=*/
+      std::map<std::string, std::string>{{"key1", "value1"}}));
+
+  ASSERT_FALSE(accumulator.AddMetricMetadata(
+      "metric_name", "test_case_name", Unit::kBytes,
+      ImprovementDirection::kSmallerIsBetter,
+      /*metric_metadata=*/
+      std::map<std::string, std::string>{{"key2", "value2"}}));
+
+  std::vector<Metric> metrics = accumulator.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kBytes));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kSmallerIsBetter));
+  EXPECT_THAT(metric.metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key2", "value2"}}));
+  ASSERT_THAT(metric.time_series.samples, IsEmpty());
+  ASSERT_THAT(metric.stats.mean, absl::nullopt);
+  ASSERT_THAT(metric.stats.stddev, absl::nullopt);
+  ASSERT_THAT(metric.stats.min, absl::nullopt);
+  ASSERT_THAT(metric.stats.max, absl::nullopt);
+}
+
+TEST(MetricsAccumulatorTest, AddMetadataToDifferentMetricsWillCreateBoth) {
+  MetricsAccumulator accumulator;
+  ASSERT_TRUE(accumulator.AddMetricMetadata(
+      "metric_name1", "test_case_name1", Unit::kMilliseconds,
+      ImprovementDirection::kBiggerIsBetter,
+      /*metric_metadata=*/
+      std::map<std::string, std::string>{{"key1", "value1"}}));
+
+  ASSERT_TRUE(accumulator.AddMetricMetadata(
+      "metric_name2", "test_case_name2", Unit::kBytes,
+      ImprovementDirection::kSmallerIsBetter,
+      /*metric_metadata=*/
+      std::map<std::string, std::string>{{"key2", "value2"}}));
+
+  std::vector<Metric> metrics = accumulator.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(2));
+  EXPECT_THAT(metrics[0].name, Eq("metric_name1"));
+  EXPECT_THAT(metrics[0].test_case, Eq("test_case_name1"));
+  EXPECT_THAT(metrics[0].unit, Eq(Unit::kMilliseconds));
+  EXPECT_THAT(metrics[0].improvement_direction,
+              Eq(ImprovementDirection::kBiggerIsBetter));
+  EXPECT_THAT(metrics[0].metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key1", "value1"}}));
+  ASSERT_THAT(metrics[0].time_series.samples, IsEmpty());
+  ASSERT_THAT(metrics[0].stats.mean, absl::nullopt);
+  ASSERT_THAT(metrics[0].stats.stddev, absl::nullopt);
+  ASSERT_THAT(metrics[0].stats.min, absl::nullopt);
+  ASSERT_THAT(metrics[0].stats.max, absl::nullopt);
+  EXPECT_THAT(metrics[1].name, Eq("metric_name2"));
+  EXPECT_THAT(metrics[1].test_case, Eq("test_case_name2"));
+  EXPECT_THAT(metrics[1].unit, Eq(Unit::kBytes));
+  EXPECT_THAT(metrics[1].improvement_direction,
+              Eq(ImprovementDirection::kSmallerIsBetter));
+  EXPECT_THAT(metrics[1].metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key2", "value2"}}));
+  ASSERT_THAT(metrics[1].time_series.samples, IsEmpty());
+  ASSERT_THAT(metrics[1].stats.mean, absl::nullopt);
+  ASSERT_THAT(metrics[1].stats.stddev, absl::nullopt);
+  ASSERT_THAT(metrics[1].stats.min, absl::nullopt);
+  ASSERT_THAT(metrics[1].stats.max, absl::nullopt);
+}
+
+TEST(MetricsAccumulatorTest, AddMetadataAfterAddingSampleWontCreateNewMetric) {
+  MetricsAccumulator accumulator;
+  ASSERT_TRUE(accumulator.AddSample(
+      "metric_name", "test_case_name",
+      /*value=*/10, Timestamp::Seconds(1),
+      /*point_metadata=*/
+      std::map<std::string, std::string>{{"key_s", "value_s"}}));
+  ASSERT_FALSE(accumulator.AddMetricMetadata(
+      "metric_name", "test_case_name", Unit::kMilliseconds,
+      ImprovementDirection::kBiggerIsBetter,
+      /*metric_metadata=*/
+      std::map<std::string, std::string>{{"key_m", "value_m"}}));
+
+  std::vector<Metric> metrics = accumulator.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kMilliseconds));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kBiggerIsBetter));
+  EXPECT_THAT(metric.metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key_m", "value_m"}}));
+  ASSERT_THAT(metric.time_series.samples, SizeIs(1));
+  EXPECT_THAT(metric.time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metric.time_series.samples[0].timestamp,
+              Eq(Timestamp::Seconds(1)));
+  EXPECT_THAT(metric.time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"key_s", "value_s"}}));
+  ASSERT_THAT(metric.stats.mean, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.stddev, absl::optional<double>(0.0));
+  ASSERT_THAT(metric.stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.max, absl::optional<double>(10.0));
+}
+
+TEST(MetricsAccumulatorTest, AddSampleAfterAddingMetadataWontCreateNewMetric) {
+  MetricsAccumulator accumulator;
+  ASSERT_TRUE(accumulator.AddMetricMetadata(
+      "metric_name", "test_case_name", Unit::kMilliseconds,
+      ImprovementDirection::kBiggerIsBetter,
+      /*metric_metadata=*/
+      std::map<std::string, std::string>{{"key_m", "value_m"}}));
+  ASSERT_FALSE(accumulator.AddSample(
+      "metric_name", "test_case_name",
+      /*value=*/10, Timestamp::Seconds(1),
+      /*point_metadata=*/
+      std::map<std::string, std::string>{{"key_s", "value_s"}}));
+
+  std::vector<Metric> metrics = accumulator.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kMilliseconds));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kBiggerIsBetter));
+  EXPECT_THAT(metric.metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key_m", "value_m"}}));
+  ASSERT_THAT(metric.time_series.samples, SizeIs(1));
+  EXPECT_THAT(metric.time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metric.time_series.samples[0].timestamp,
+              Eq(Timestamp::Seconds(1)));
+  EXPECT_THAT(metric.time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"key_s", "value_s"}}));
+  ASSERT_THAT(metric.stats.mean, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.stddev, absl::optional<double>(0.0));
+  ASSERT_THAT(metric.stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.max, absl::optional<double>(10.0));
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_exporter.h b/third_party/libwebrtc/api/test/metrics/metrics_exporter.h
new file mode 100644
index 0000000000..23954b6b1f
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_exporter.h
@@ -0,0 +1,33 @@
+/*
+ *  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 API_TEST_METRICS_METRICS_EXPORTER_H_
+#define API_TEST_METRICS_METRICS_EXPORTER_H_
+
+#include "api/array_view.h"
+#include "api/test/metrics/metric.h"
+
+namespace webrtc {
+namespace test {
+
+// Exports metrics in the requested format.
+class MetricsExporter {
+ public:
+  virtual ~MetricsExporter() = default;
+
+  // Exports specified metrics in a format that depends on the implementation.
+  // Returns true if export succeeded, false otherwise.
+  virtual bool Export(rtc::ArrayView<const Metric> metrics) = 0;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_METRICS_METRICS_EXPORTER_H_
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_logger.cc b/third_party/libwebrtc/api/test/metrics/metrics_logger.cc
new file mode 100644
index 0000000000..1e24400367
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_logger.cc
@@ -0,0 +1,114 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/metrics_logger.h"
+
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "api/numerics/samples_stats_counter.h"
+#include "api/test/metrics/metric.h"
+#include "rtc_base/synchronization/mutex.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+Metric::Stats ToStats(const SamplesStatsCounter& values) {
+  if (values.IsEmpty()) {
+    return Metric::Stats();
+  }
+  return Metric::Stats{.mean = values.GetAverage(),
+                       .stddev = values.GetStandardDeviation(),
+                       .min = values.GetMin(),
+                       .max = values.GetMax()};
+}
+
+}  // namespace
+
+void DefaultMetricsLogger::LogSingleValueMetric(
+    absl::string_view name,
+    absl::string_view test_case_name,
+    double value,
+    Unit unit,
+    ImprovementDirection improvement_direction,
+    std::map<std::string, std::string> metadata) {
+  MutexLock lock(&mutex_);
+  metrics_.push_back(Metric{
+      .name = std::string(name),
+      .unit = unit,
+      .improvement_direction = improvement_direction,
+      .test_case = std::string(test_case_name),
+      .metric_metadata = std::move(metadata),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Metric::TimeSeries::Sample{
+                                 .timestamp = Now(), .value = value}}},
+      .stats = Metric::Stats{
+          .mean = value, .stddev = absl::nullopt, .min = value, .max = value}});
+}
+
+void DefaultMetricsLogger::LogMetric(
+    absl::string_view name,
+    absl::string_view test_case_name,
+    const SamplesStatsCounter& values,
+    Unit unit,
+    ImprovementDirection improvement_direction,
+    std::map<std::string, std::string> metadata) {
+  MutexLock lock(&mutex_);
+  Metric::TimeSeries time_series;
+  for (const SamplesStatsCounter::StatsSample& sample :
+       values.GetTimedSamples()) {
+    time_series.samples.push_back(
+        Metric::TimeSeries::Sample{.timestamp = sample.time,
+                                   .value = sample.value,
+                                   .sample_metadata = sample.metadata});
+  }
+
+  metrics_.push_back(Metric{.name = std::string(name),
+                            .unit = unit,
+                            .improvement_direction = improvement_direction,
+                            .test_case = std::string(test_case_name),
+                            .metric_metadata = std::move(metadata),
+                            .time_series = std::move(time_series),
+                            .stats = ToStats(values)});
+}
+
+void DefaultMetricsLogger::LogMetric(
+    absl::string_view name,
+    absl::string_view test_case_name,
+    const Metric::Stats& metric_stats,
+    Unit unit,
+    ImprovementDirection improvement_direction,
+    std::map<std::string, std::string> metadata) {
+  MutexLock lock(&mutex_);
+  metrics_.push_back(Metric{.name = std::string(name),
+                            .unit = unit,
+                            .improvement_direction = improvement_direction,
+                            .test_case = std::string(test_case_name),
+                            .metric_metadata = std::move(metadata),
+                            .time_series = Metric::TimeSeries{.samples = {}},
+                            .stats = std::move(metric_stats)});
+}
+
+std::vector<Metric> DefaultMetricsLogger::GetCollectedMetrics() const {
+  std::vector<Metric> out = metrics_accumulator_.GetCollectedMetrics();
+  MutexLock lock(&mutex_);
+  out.insert(out.end(), metrics_.begin(), metrics_.end());
+  return out;
+}
+
+Timestamp DefaultMetricsLogger::Now() {
+  return clock_->CurrentTime();
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_logger.h b/third_party/libwebrtc/api/test/metrics/metrics_logger.h
new file mode 100644
index 0000000000..66f9e55b95
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_logger.h
@@ -0,0 +1,112 @@
+/*
+ *  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 API_TEST_METRICS_METRICS_LOGGER_H_
+#define API_TEST_METRICS_METRICS_LOGGER_H_
+
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "api/numerics/samples_stats_counter.h"
+#include "api/test/metrics/metric.h"
+#include "api/test/metrics/metrics_accumulator.h"
+#include "rtc_base/synchronization/mutex.h"
+#include "system_wrappers/include/clock.h"
+
+namespace webrtc {
+namespace test {
+
+// Provides API to log and collect performance metrics.
+class MetricsLogger {
+ public:
+  virtual ~MetricsLogger() = default;
+
+  // Adds a metric with a single value.
+  // `metadata` - metric's level metadata to add.
+  virtual void LogSingleValueMetric(
+      absl::string_view name,
+      absl::string_view test_case_name,
+      double value,
+      Unit unit,
+      ImprovementDirection improvement_direction,
+      std::map<std::string, std::string> metadata = {}) = 0;
+
+  // Adds metrics with a time series created based on the provided `values`.
+  // `metadata` - metric's level metadata to add.
+  virtual void LogMetric(absl::string_view name,
+                         absl::string_view test_case_name,
+                         const SamplesStatsCounter& values,
+                         Unit unit,
+                         ImprovementDirection improvement_direction,
+                         std::map<std::string, std::string> metadata = {}) = 0;
+
+  // Adds metric with a time series with only stats object and without actual
+  // collected values.
+  // `metadata` - metric's level metadata to add.
+  virtual void LogMetric(absl::string_view name,
+                         absl::string_view test_case_name,
+                         const Metric::Stats& metric_stats,
+                         Unit unit,
+                         ImprovementDirection improvement_direction,
+                         std::map<std::string, std::string> metadata = {}) = 0;
+
+  // Returns all metrics collected by this logger.
+  virtual std::vector<Metric> GetCollectedMetrics() const = 0;
+};
+
+class DefaultMetricsLogger : public MetricsLogger {
+ public:
+  explicit DefaultMetricsLogger(webrtc::Clock* clock) : clock_(clock) {}
+  ~DefaultMetricsLogger() override = default;
+
+  void LogSingleValueMetric(
+      absl::string_view name,
+      absl::string_view test_case_name,
+      double value,
+      Unit unit,
+      ImprovementDirection improvement_direction,
+      std::map<std::string, std::string> metadata = {}) override;
+
+  void LogMetric(absl::string_view name,
+                 absl::string_view test_case_name,
+                 const SamplesStatsCounter& values,
+                 Unit unit,
+                 ImprovementDirection improvement_direction,
+                 std::map<std::string, std::string> metadata = {}) override;
+
+  void LogMetric(absl::string_view name,
+                 absl::string_view test_case_name,
+                 const Metric::Stats& metric_stats,
+                 Unit unit,
+                 ImprovementDirection improvement_direction,
+                 std::map<std::string, std::string> metadata = {}) override;
+
+  // Returns all metrics collected by this logger and its `MetricsAccumulator`.
+  std::vector<Metric> GetCollectedMetrics() const override;
+
+  MetricsAccumulator* GetMetricsAccumulator() { return &metrics_accumulator_; }
+
+ private:
+  webrtc::Timestamp Now();
+
+  webrtc::Clock* const clock_;
+  MetricsAccumulator metrics_accumulator_;
+
+  mutable Mutex mutex_;
+  std::vector<Metric> metrics_ RTC_GUARDED_BY(mutex_);
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_METRICS_METRICS_LOGGER_H_
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_logger_test.cc b/third_party/libwebrtc/api/test/metrics/metrics_logger_test.cc
new file mode 100644
index 0000000000..de4501ca36
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_logger_test.cc
@@ -0,0 +1,326 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/metrics_logger.h"
+
+#include <map>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/numerics/samples_stats_counter.h"
+#include "api/test/metrics/metric.h"
+#include "system_wrappers/include/clock.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+using ::testing::Eq;
+using ::testing::IsEmpty;
+using ::testing::SizeIs;
+
+std::map<std::string, std::string> DefaultMetadata() {
+  return std::map<std::string, std::string>{{"key", "value"}};
+}
+
+TEST(DefaultMetricsLoggerTest, LogSingleValueMetricRecordsMetric) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  logger.LogSingleValueMetric(
+      "metric_name", "test_case_name",
+      /*value=*/10, Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+      std::map<std::string, std::string>{{"key", "value"}});
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kMilliseconds));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kBiggerIsBetter));
+  EXPECT_THAT(metric.metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key", "value"}}));
+  ASSERT_THAT(metric.time_series.samples, SizeIs(1));
+  EXPECT_THAT(metric.time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metric.time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{}));
+  ASSERT_THAT(metric.stats.mean, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.stddev, absl::nullopt);
+  ASSERT_THAT(metric.stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.max, absl::optional<double>(10.0));
+}
+
+TEST(DefaultMetricsLoggerTest, LogMetricWithSamplesStatsCounterRecordsMetric) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+
+  SamplesStatsCounter values;
+  values.AddSample(SamplesStatsCounter::StatsSample{
+      .value = 10,
+      .time = Clock::GetRealTimeClock()->CurrentTime(),
+      .metadata =
+          std::map<std::string, std::string>{{"point_key1", "value1"}}});
+  values.AddSample(SamplesStatsCounter::StatsSample{
+      .value = 20,
+      .time = Clock::GetRealTimeClock()->CurrentTime(),
+      .metadata =
+          std::map<std::string, std::string>{{"point_key2", "value2"}}});
+  logger.LogMetric("metric_name", "test_case_name", values, Unit::kMilliseconds,
+                   ImprovementDirection::kBiggerIsBetter,
+                   std::map<std::string, std::string>{{"key", "value"}});
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kMilliseconds));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kBiggerIsBetter));
+  EXPECT_THAT(metric.metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key", "value"}}));
+  ASSERT_THAT(metric.time_series.samples, SizeIs(2));
+  EXPECT_THAT(metric.time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metric.time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"point_key1", "value1"}}));
+  EXPECT_THAT(metric.time_series.samples[1].value, Eq(20.0));
+  EXPECT_THAT(metric.time_series.samples[1].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"point_key2", "value2"}}));
+  ASSERT_THAT(metric.stats.mean, absl::optional<double>(15.0));
+  ASSERT_THAT(metric.stats.stddev, absl::optional<double>(5.0));
+  ASSERT_THAT(metric.stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.max, absl::optional<double>(20.0));
+}
+
+TEST(DefaultMetricsLoggerTest,
+     LogMetricWithEmptySamplesStatsCounterRecordsEmptyMetric) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  SamplesStatsCounter values;
+  logger.LogMetric("metric_name", "test_case_name", values, Unit::kUnitless,
+                   ImprovementDirection::kBiggerIsBetter, DefaultMetadata());
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  EXPECT_THAT(metrics[0].name, Eq("metric_name"));
+  EXPECT_THAT(metrics[0].test_case, Eq("test_case_name"));
+  EXPECT_THAT(metrics[0].time_series.samples, IsEmpty());
+  ASSERT_THAT(metrics[0].stats.mean, Eq(absl::nullopt));
+  ASSERT_THAT(metrics[0].stats.stddev, Eq(absl::nullopt));
+  ASSERT_THAT(metrics[0].stats.min, Eq(absl::nullopt));
+  ASSERT_THAT(metrics[0].stats.max, Eq(absl::nullopt));
+}
+
+TEST(DefaultMetricsLoggerTest, LogMetricWithStatsRecordsMetric) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  Metric::Stats metric_stats{.mean = 15, .stddev = 5, .min = 10, .max = 20};
+  logger.LogMetric("metric_name", "test_case_name", metric_stats,
+                   Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+                   std::map<std::string, std::string>{{"key", "value"}});
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kMilliseconds));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kBiggerIsBetter));
+  EXPECT_THAT(metric.metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key", "value"}}));
+  ASSERT_THAT(metric.time_series.samples, IsEmpty());
+  ASSERT_THAT(metric.stats.mean, absl::optional<double>(15.0));
+  ASSERT_THAT(metric.stats.stddev, absl::optional<double>(5.0));
+  ASSERT_THAT(metric.stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.max, absl::optional<double>(20.0));
+}
+
+TEST(DefaultMetricsLoggerTest, LogSingleValueMetricRecordsMultipleMetrics) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+
+  logger.LogSingleValueMetric("metric_name1", "test_case_name1",
+                              /*value=*/10, Unit::kMilliseconds,
+                              ImprovementDirection::kBiggerIsBetter,
+                              DefaultMetadata());
+  logger.LogSingleValueMetric("metric_name2", "test_case_name2",
+                              /*value=*/10, Unit::kMilliseconds,
+                              ImprovementDirection::kBiggerIsBetter,
+                              DefaultMetadata());
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(2));
+  EXPECT_THAT(metrics[0].name, Eq("metric_name1"));
+  EXPECT_THAT(metrics[0].test_case, Eq("test_case_name1"));
+  EXPECT_THAT(metrics[1].name, Eq("metric_name2"));
+  EXPECT_THAT(metrics[1].test_case, Eq("test_case_name2"));
+}
+
+TEST(DefaultMetricsLoggerTest,
+     LogMetricWithSamplesStatsCounterRecordsMultipleMetrics) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  SamplesStatsCounter values;
+  values.AddSample(SamplesStatsCounter::StatsSample{
+      .value = 10,
+      .time = Clock::GetRealTimeClock()->CurrentTime(),
+      .metadata = DefaultMetadata()});
+  values.AddSample(SamplesStatsCounter::StatsSample{
+      .value = 20,
+      .time = Clock::GetRealTimeClock()->CurrentTime(),
+      .metadata = DefaultMetadata()});
+
+  logger.LogMetric("metric_name1", "test_case_name1", values,
+                   Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+                   DefaultMetadata());
+  logger.LogMetric("metric_name2", "test_case_name2", values,
+                   Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+                   DefaultMetadata());
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(2));
+  EXPECT_THAT(metrics[0].name, Eq("metric_name1"));
+  EXPECT_THAT(metrics[0].test_case, Eq("test_case_name1"));
+  EXPECT_THAT(metrics[1].name, Eq("metric_name2"));
+  EXPECT_THAT(metrics[1].test_case, Eq("test_case_name2"));
+}
+
+TEST(DefaultMetricsLoggerTest, LogMetricWithStatsRecordsMultipleMetrics) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  Metric::Stats metric_stats{.mean = 15, .stddev = 5, .min = 10, .max = 20};
+
+  logger.LogMetric("metric_name1", "test_case_name1", metric_stats,
+                   Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+                   DefaultMetadata());
+  logger.LogMetric("metric_name2", "test_case_name2", metric_stats,
+                   Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+                   DefaultMetadata());
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(2));
+  EXPECT_THAT(metrics[0].name, Eq("metric_name1"));
+  EXPECT_THAT(metrics[0].test_case, Eq("test_case_name1"));
+  EXPECT_THAT(metrics[1].name, Eq("metric_name2"));
+  EXPECT_THAT(metrics[1].test_case, Eq("test_case_name2"));
+}
+
+TEST(DefaultMetricsLoggerTest,
+     LogMetricThroughtAllMethodsAccumulateAllMetrics) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  SamplesStatsCounter values;
+  values.AddSample(SamplesStatsCounter::StatsSample{
+      .value = 10,
+      .time = Clock::GetRealTimeClock()->CurrentTime(),
+      .metadata = DefaultMetadata()});
+  values.AddSample(SamplesStatsCounter::StatsSample{
+      .value = 20,
+      .time = Clock::GetRealTimeClock()->CurrentTime(),
+      .metadata = DefaultMetadata()});
+  Metric::Stats metric_stats{.mean = 15, .stddev = 5, .min = 10, .max = 20};
+
+  logger.LogSingleValueMetric("metric_name1", "test_case_name1",
+                              /*value=*/10, Unit::kMilliseconds,
+                              ImprovementDirection::kBiggerIsBetter,
+                              DefaultMetadata());
+  logger.LogMetric("metric_name2", "test_case_name2", values,
+                   Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+                   DefaultMetadata());
+  logger.LogMetric("metric_name3", "test_case_name3", metric_stats,
+                   Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+                   DefaultMetadata());
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics.size(), Eq(3lu));
+  EXPECT_THAT(metrics[0].name, Eq("metric_name1"));
+  EXPECT_THAT(metrics[0].test_case, Eq("test_case_name1"));
+  EXPECT_THAT(metrics[1].name, Eq("metric_name2"));
+  EXPECT_THAT(metrics[1].test_case, Eq("test_case_name2"));
+  EXPECT_THAT(metrics[2].name, Eq("metric_name3"));
+  EXPECT_THAT(metrics[2].test_case, Eq("test_case_name3"));
+}
+
+TEST(DefaultMetricsLoggerTest, AccumulatedMetricsReturnedInCollectedMetrics) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  logger.GetMetricsAccumulator()->AddSample(
+      "metric_name", "test_case_name",
+      /*value=*/10, Timestamp::Seconds(1),
+      /*point_metadata=*/std::map<std::string, std::string>{{"key", "value"}});
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(1));
+  const Metric& metric = metrics[0];
+  EXPECT_THAT(metric.name, Eq("metric_name"));
+  EXPECT_THAT(metric.test_case, Eq("test_case_name"));
+  EXPECT_THAT(metric.unit, Eq(Unit::kUnitless));
+  EXPECT_THAT(metric.improvement_direction,
+              Eq(ImprovementDirection::kNeitherIsBetter));
+  EXPECT_THAT(metric.metric_metadata, IsEmpty());
+  ASSERT_THAT(metric.time_series.samples, SizeIs(1));
+  EXPECT_THAT(metric.time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metric.time_series.samples[0].timestamp,
+              Eq(Timestamp::Seconds(1)));
+  EXPECT_THAT(metric.time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"key", "value"}}));
+  ASSERT_THAT(metric.stats.mean, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.stddev, absl::optional<double>(0.0));
+  ASSERT_THAT(metric.stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metric.stats.max, absl::optional<double>(10.0));
+}
+
+TEST(DefaultMetricsLoggerTest,
+     AccumulatedMetricsReturnedTogetherWithLoggedMetrics) {
+  DefaultMetricsLogger logger(Clock::GetRealTimeClock());
+  logger.LogSingleValueMetric(
+      "metric_name1", "test_case_name1",
+      /*value=*/10, Unit::kMilliseconds, ImprovementDirection::kBiggerIsBetter,
+      std::map<std::string, std::string>{{"key_m", "value_m"}});
+  logger.GetMetricsAccumulator()->AddSample(
+      "metric_name2", "test_case_name2",
+      /*value=*/10, Timestamp::Seconds(1),
+      /*point_metadata=*/
+      std::map<std::string, std::string>{{"key_s", "value_s"}});
+
+  std::vector<Metric> metrics = logger.GetCollectedMetrics();
+  ASSERT_THAT(metrics, SizeIs(2));
+  EXPECT_THAT(metrics[0].name, Eq("metric_name2"));
+  EXPECT_THAT(metrics[0].test_case, Eq("test_case_name2"));
+  EXPECT_THAT(metrics[0].unit, Eq(Unit::kUnitless));
+  EXPECT_THAT(metrics[0].improvement_direction,
+              Eq(ImprovementDirection::kNeitherIsBetter));
+  EXPECT_THAT(metrics[0].metric_metadata, IsEmpty());
+  ASSERT_THAT(metrics[0].time_series.samples, SizeIs(1));
+  EXPECT_THAT(metrics[0].time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metrics[0].time_series.samples[0].timestamp,
+              Eq(Timestamp::Seconds(1)));
+  EXPECT_THAT(metrics[0].time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{{"key_s", "value_s"}}));
+  ASSERT_THAT(metrics[0].stats.mean, absl::optional<double>(10.0));
+  ASSERT_THAT(metrics[0].stats.stddev, absl::optional<double>(0.0));
+  ASSERT_THAT(metrics[0].stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metrics[0].stats.max, absl::optional<double>(10.0));
+  EXPECT_THAT(metrics[1].name, Eq("metric_name1"));
+  EXPECT_THAT(metrics[1].test_case, Eq("test_case_name1"));
+  EXPECT_THAT(metrics[1].unit, Eq(Unit::kMilliseconds));
+  EXPECT_THAT(metrics[1].improvement_direction,
+              Eq(ImprovementDirection::kBiggerIsBetter));
+  EXPECT_THAT(metrics[1].metric_metadata,
+              Eq(std::map<std::string, std::string>{{"key_m", "value_m"}}));
+  ASSERT_THAT(metrics[1].time_series.samples, SizeIs(1));
+  EXPECT_THAT(metrics[1].time_series.samples[0].value, Eq(10.0));
+  EXPECT_THAT(metrics[1].time_series.samples[0].sample_metadata,
+              Eq(std::map<std::string, std::string>{}));
+  ASSERT_THAT(metrics[1].stats.mean, absl::optional<double>(10.0));
+  ASSERT_THAT(metrics[1].stats.stddev, absl::nullopt);
+  ASSERT_THAT(metrics[1].stats.min, absl::optional<double>(10.0));
+  ASSERT_THAT(metrics[1].stats.max, absl::optional<double>(10.0));
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_set_proto_file_exporter.cc b/third_party/libwebrtc/api/test/metrics/metrics_set_proto_file_exporter.cc
new file mode 100644
index 0000000000..86e6f2e136
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_set_proto_file_exporter.cc
@@ -0,0 +1,157 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/metrics_set_proto_file_exporter.h"
+
+#include <stdio.h>
+
+#include <string>
+
+#include "api/test/metrics/metric.h"
+#include "rtc_base/logging.h"
+#include "test/testsupport/file_utils.h"
+
+#if WEBRTC_ENABLE_PROTOBUF
+#include "api/test/metrics/proto/metric.pb.h"
+#endif
+
+namespace webrtc {
+namespace test {
+namespace {
+
+#if WEBRTC_ENABLE_PROTOBUF
+webrtc::test_metrics::Unit ToProtoUnit(Unit unit) {
+  switch (unit) {
+    case Unit::kMilliseconds:
+      return webrtc::test_metrics::Unit::MILLISECONDS;
+    case Unit::kPercent:
+      return webrtc::test_metrics::Unit::PERCENT;
+    case Unit::kBytes:
+      return webrtc::test_metrics::Unit::BYTES;
+    case Unit::kKilobitsPerSecond:
+      return webrtc::test_metrics::Unit::KILOBITS_PER_SECOND;
+    case Unit::kHertz:
+      return webrtc::test_metrics::Unit::HERTZ;
+    case Unit::kUnitless:
+      return webrtc::test_metrics::Unit::UNITLESS;
+    case Unit::kCount:
+      return webrtc::test_metrics::Unit::COUNT;
+  }
+}
+
+webrtc::test_metrics::ImprovementDirection ToProtoImprovementDirection(
+    ImprovementDirection direction) {
+  switch (direction) {
+    case ImprovementDirection::kBiggerIsBetter:
+      return webrtc::test_metrics::ImprovementDirection::BIGGER_IS_BETTER;
+    case ImprovementDirection::kNeitherIsBetter:
+      return webrtc::test_metrics::ImprovementDirection::NEITHER_IS_BETTER;
+    case ImprovementDirection::kSmallerIsBetter:
+      return webrtc::test_metrics::ImprovementDirection::SMALLER_IS_BETTER;
+  }
+}
+
+void SetTimeSeries(
+    const Metric::TimeSeries& time_series,
+    webrtc::test_metrics::Metric::TimeSeries* proto_time_series) {
+  for (const Metric::TimeSeries::Sample& sample : time_series.samples) {
+    webrtc::test_metrics::Metric::TimeSeries::Sample* proto_sample =
+        proto_time_series->add_samples();
+    proto_sample->set_value(sample.value);
+    proto_sample->set_timestamp_us(sample.timestamp.us());
+    for (const auto& [key, value] : sample.sample_metadata) {
+      proto_sample->mutable_sample_metadata()->insert({key, value});
+    }
+  }
+}
+
+void SetStats(const Metric::Stats& stats,
+              webrtc::test_metrics::Metric::Stats* proto_stats) {
+  if (stats.mean.has_value()) {
+    proto_stats->set_mean(*stats.mean);
+  }
+  if (stats.stddev.has_value()) {
+    proto_stats->set_stddev(*stats.stddev);
+  }
+  if (stats.min.has_value()) {
+    proto_stats->set_min(*stats.min);
+  }
+  if (stats.max.has_value()) {
+    proto_stats->set_max(*stats.max);
+  }
+}
+
+bool WriteMetricsToFile(const std::string& path,
+                        const webrtc::test_metrics::MetricsSet& metrics_set) {
+  std::string data;
+  bool ok = metrics_set.SerializeToString(&data);
+  if (!ok) {
+    RTC_LOG(LS_ERROR) << "Failed to serialize histogram set to string";
+    return false;
+  }
+
+  CreateDir(DirName(path));
+  FILE* output = fopen(path.c_str(), "wb");
+  if (output == NULL) {
+    RTC_LOG(LS_ERROR) << "Failed to write to " << path;
+    return false;
+  }
+  size_t written = fwrite(data.c_str(), sizeof(char), data.size(), output);
+  fclose(output);
+
+  if (written != data.size()) {
+    size_t expected = data.size();
+    RTC_LOG(LS_ERROR) << "Wrote " << written << ", tried to write " << expected;
+    return false;
+  }
+  return true;
+}
+#endif  // WEBRTC_ENABLE_PROTOBUF
+
+}  // namespace
+
+MetricsSetProtoFileExporter::Options::Options(
+    absl::string_view export_file_path)
+    : export_file_path(export_file_path) {}
+MetricsSetProtoFileExporter::Options::Options(
+    absl::string_view export_file_path,
+    bool export_whole_time_series)
+    : export_file_path(export_file_path),
+      export_whole_time_series(export_whole_time_series) {}
+
+bool MetricsSetProtoFileExporter::Export(rtc::ArrayView<const Metric> metrics) {
+#if WEBRTC_ENABLE_PROTOBUF
+  webrtc::test_metrics::MetricsSet metrics_set;
+  for (const Metric& metric : metrics) {
+    webrtc::test_metrics::Metric* metric_proto = metrics_set.add_metrics();
+    metric_proto->set_name(metric.name);
+    metric_proto->set_unit(ToProtoUnit(metric.unit));
+    metric_proto->set_improvement_direction(
+        ToProtoImprovementDirection(metric.improvement_direction));
+    metric_proto->set_test_case(metric.test_case);
+    for (const auto& [key, value] : metric.metric_metadata) {
+      metric_proto->mutable_metric_metadata()->insert({key, value});
+    }
+
+    if (options_.export_whole_time_series) {
+      SetTimeSeries(metric.time_series, metric_proto->mutable_time_series());
+    }
+    SetStats(metric.stats, metric_proto->mutable_stats());
+  }
+
+  return WriteMetricsToFile(options_.export_file_path, metrics_set);
+#else
+  RTC_LOG(LS_ERROR)
+      << "Compile with protobuf support to properly use this class";
+  return false;
+#endif
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_set_proto_file_exporter.h b/third_party/libwebrtc/api/test/metrics/metrics_set_proto_file_exporter.h
new file mode 100644
index 0000000000..f996e9e7b0
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_set_proto_file_exporter.h
@@ -0,0 +1,54 @@
+/*
+ *  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 API_TEST_METRICS_METRICS_SET_PROTO_FILE_EXPORTER_H_
+#define API_TEST_METRICS_METRICS_SET_PROTO_FILE_EXPORTER_H_
+
+#include <string>
+
+#include "api/array_view.h"
+#include "api/test/metrics/metric.h"
+#include "api/test/metrics/metrics_exporter.h"
+
+namespace webrtc {
+namespace test {
+
+// Exports all collected metrics to the proto file using
+// `webrtc::test_metrics::MetricsSet` format.
+class MetricsSetProtoFileExporter : public MetricsExporter {
+ public:
+  struct Options {
+    explicit Options(absl::string_view export_file_path);
+    Options(absl::string_view export_file_path, bool export_whole_time_series);
+
+    // File to export proto.
+    std::string export_file_path;
+    // If true will write all time series values to the output proto file,
+    // otherwise will write stats only.
+    bool export_whole_time_series = true;
+  };
+
+  explicit MetricsSetProtoFileExporter(const Options& options)
+      : options_(options) {}
+
+  MetricsSetProtoFileExporter(const MetricsSetProtoFileExporter&) = delete;
+  MetricsSetProtoFileExporter& operator=(const MetricsSetProtoFileExporter&) =
+      delete;
+
+  bool Export(rtc::ArrayView<const Metric> metrics) override;
+
+ private:
+  const Options options_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_METRICS_METRICS_SET_PROTO_FILE_EXPORTER_H_
diff --git a/third_party/libwebrtc/api/test/metrics/metrics_set_proto_file_exporter_test.cc b/third_party/libwebrtc/api/test/metrics/metrics_set_proto_file_exporter_test.cc
new file mode 100644
index 0000000000..eb4d483068
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/metrics_set_proto_file_exporter_test.cc
@@ -0,0 +1,151 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/metrics_set_proto_file_exporter.h"
+
+#include <fstream>
+#include <map>
+#include <string>
+#include <vector>
+
+#include "api/test/metrics/metric.h"
+#include "api/test/metrics/proto/metric.pb.h"
+#include "api/units/timestamp.h"
+#include "rtc_base/protobuf_utils.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+#include "test/testsupport/file_utils.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+using ::testing::Eq;
+using ::testing::Test;
+
+namespace proto = ::webrtc::test_metrics;
+
+std::string ReadFileAsString(const std::string& filename) {
+  std::ifstream infile(filename, std::ios_base::binary);
+  auto buffer = std::vector<char>(std::istreambuf_iterator<char>(infile),
+                                  std::istreambuf_iterator<char>());
+  return std::string(buffer.begin(), buffer.end());
+}
+
+std::map<std::string, std::string> DefaultMetadata() {
+  return std::map<std::string, std::string>{{"key", "value"}};
+}
+
+Metric::TimeSeries::Sample Sample(double value) {
+  return Metric::TimeSeries::Sample{.timestamp = Timestamp::Seconds(1),
+                                    .value = value,
+                                    .sample_metadata = DefaultMetadata()};
+}
+
+void AssertSamplesEqual(const proto::Metric::TimeSeries::Sample& actual_sample,
+                        const Metric::TimeSeries::Sample& expected_sample) {
+  EXPECT_THAT(actual_sample.value(), Eq(expected_sample.value));
+  EXPECT_THAT(actual_sample.timestamp_us(), Eq(expected_sample.timestamp.us()));
+  EXPECT_THAT(actual_sample.sample_metadata().size(),
+              Eq(expected_sample.sample_metadata.size()));
+  for (const auto& [key, value] : expected_sample.sample_metadata) {
+    EXPECT_THAT(actual_sample.sample_metadata().at(key), Eq(value));
+  }
+}
+
+class MetricsSetProtoFileExporterTest : public Test {
+ protected:
+  ~MetricsSetProtoFileExporterTest() override = default;
+
+  void SetUp() override {
+    temp_filename_ = webrtc::test::TempFilename(
+        webrtc::test::OutputPath(), "metrics_set_proto_file_exporter_test");
+  }
+
+  void TearDown() override {
+    ASSERT_TRUE(webrtc::test::RemoveFile(temp_filename_));
+  }
+
+  std::string temp_filename_;
+};
+
+TEST_F(MetricsSetProtoFileExporterTest, MetricsAreExportedCorrectly) {
+  MetricsSetProtoFileExporter::Options options(temp_filename_);
+  MetricsSetProtoFileExporter exporter(options);
+
+  Metric metric1{
+      .name = "test_metric1",
+      .unit = Unit::kMilliseconds,
+      .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+      .test_case = "test_case_name1",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(10), Sample(20)}},
+      .stats =
+          Metric::Stats{.mean = 15.0, .stddev = 5.0, .min = 10.0, .max = 20.0}};
+  Metric metric2{
+      .name = "test_metric2",
+      .unit = Unit::kKilobitsPerSecond,
+      .improvement_direction = ImprovementDirection::kSmallerIsBetter,
+      .test_case = "test_case_name2",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(20), Sample(40)}},
+      .stats = Metric::Stats{
+          .mean = 30.0, .stddev = 10.0, .min = 20.0, .max = 40.0}};
+
+  ASSERT_TRUE(exporter.Export(std::vector<Metric>{metric1, metric2}));
+  webrtc::test_metrics::MetricsSet actual_metrics_set;
+  actual_metrics_set.ParseFromString(ReadFileAsString(temp_filename_));
+  EXPECT_THAT(actual_metrics_set.metrics().size(), Eq(2));
+
+  EXPECT_THAT(actual_metrics_set.metrics(0).name(), Eq("test_metric1"));
+  EXPECT_THAT(actual_metrics_set.metrics(0).test_case(), Eq("test_case_name1"));
+  EXPECT_THAT(actual_metrics_set.metrics(0).unit(),
+              Eq(proto::Unit::MILLISECONDS));
+  EXPECT_THAT(actual_metrics_set.metrics(0).improvement_direction(),
+              Eq(proto::ImprovementDirection::BIGGER_IS_BETTER));
+  EXPECT_THAT(actual_metrics_set.metrics(0).metric_metadata().size(), Eq(1lu));
+  EXPECT_THAT(actual_metrics_set.metrics(0).metric_metadata().at("key"),
+              Eq("value"));
+  EXPECT_THAT(actual_metrics_set.metrics(0).time_series().samples().size(),
+              Eq(2));
+  AssertSamplesEqual(actual_metrics_set.metrics(0).time_series().samples(0),
+                     Sample(10.0));
+  AssertSamplesEqual(actual_metrics_set.metrics(0).time_series().samples(1),
+                     Sample(20.0));
+  EXPECT_THAT(actual_metrics_set.metrics(0).stats().mean(), Eq(15.0));
+  EXPECT_THAT(actual_metrics_set.metrics(0).stats().stddev(), Eq(5.0));
+  EXPECT_THAT(actual_metrics_set.metrics(0).stats().min(), Eq(10.0));
+  EXPECT_THAT(actual_metrics_set.metrics(0).stats().max(), Eq(20.0));
+
+  EXPECT_THAT(actual_metrics_set.metrics(1).name(), Eq("test_metric2"));
+  EXPECT_THAT(actual_metrics_set.metrics(1).test_case(), Eq("test_case_name2"));
+  EXPECT_THAT(actual_metrics_set.metrics(1).unit(),
+              Eq(proto::Unit::KILOBITS_PER_SECOND));
+  EXPECT_THAT(actual_metrics_set.metrics(1).improvement_direction(),
+              Eq(proto::ImprovementDirection::SMALLER_IS_BETTER));
+  EXPECT_THAT(actual_metrics_set.metrics(1).metric_metadata().size(), Eq(1lu));
+  EXPECT_THAT(actual_metrics_set.metrics(1).metric_metadata().at("key"),
+              Eq("value"));
+  EXPECT_THAT(actual_metrics_set.metrics(1).time_series().samples().size(),
+              Eq(2));
+  AssertSamplesEqual(actual_metrics_set.metrics(1).time_series().samples(0),
+                     Sample(20.0));
+  AssertSamplesEqual(actual_metrics_set.metrics(1).time_series().samples(1),
+                     Sample(40.0));
+  EXPECT_THAT(actual_metrics_set.metrics(1).stats().mean(), Eq(30.0));
+  EXPECT_THAT(actual_metrics_set.metrics(1).stats().stddev(), Eq(10.0));
+  EXPECT_THAT(actual_metrics_set.metrics(1).stats().min(), Eq(20.0));
+  EXPECT_THAT(actual_metrics_set.metrics(1).stats().max(), Eq(40.0));
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/print_result_proxy_metrics_exporter.cc b/third_party/libwebrtc/api/test/metrics/print_result_proxy_metrics_exporter.cc
new file mode 100644
index 0000000000..1ce1e63892
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/print_result_proxy_metrics_exporter.cc
@@ -0,0 +1,157 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/print_result_proxy_metrics_exporter.h"
+
+#include <string>
+#include <unordered_set>
+
+#include "api/array_view.h"
+#include "api/test/metrics/metric.h"
+#include "test/testsupport/perf_test.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+std::string ToPrintResultUnit(Unit unit) {
+  switch (unit) {
+    case Unit::kMilliseconds:
+      return "msBestFitFormat";
+    case Unit::kPercent:
+      return "n%";
+    case Unit::kBytes:
+      return "sizeInBytes";
+    case Unit::kKilobitsPerSecond:
+      // PrintResults prefer Chrome Perf Dashboard units, which doesn't have
+      // kpbs units, so we change the unit and value accordingly.
+      return "bytesPerSecond";
+    case Unit::kHertz:
+      return "Hz";
+    case Unit::kUnitless:
+      return "unitless";
+    case Unit::kCount:
+      return "count";
+  }
+}
+
+double ToPrintResultValue(double value, Unit unit) {
+  switch (unit) {
+    case Unit::kKilobitsPerSecond:
+      // PrintResults prefer Chrome Perf Dashboard units, which doesn't have
+      // kpbs units, so we change the unit and value accordingly.
+      return value * 1000 / 8;
+    default:
+      return value;
+  }
+}
+
+ImproveDirection ToPrintResultImproveDirection(ImprovementDirection direction) {
+  switch (direction) {
+    case ImprovementDirection::kBiggerIsBetter:
+      return ImproveDirection::kBiggerIsBetter;
+    case ImprovementDirection::kNeitherIsBetter:
+      return ImproveDirection::kNone;
+    case ImprovementDirection::kSmallerIsBetter:
+      return ImproveDirection::kSmallerIsBetter;
+  }
+}
+
+bool IsEmpty(const Metric::Stats& stats) {
+  return !stats.mean.has_value() && !stats.stddev.has_value() &&
+         !stats.min.has_value() && !stats.max.has_value();
+}
+
+bool NameEndsWithConnected(const std::string& name) {
+  static const std::string suffix = "_connected";
+  return name.size() >= suffix.size() &&
+         0 == name.compare(name.size() - suffix.size(), suffix.size(), suffix);
+}
+
+}  // namespace
+
+bool PrintResultProxyMetricsExporter::Export(
+    rtc::ArrayView<const Metric> metrics) {
+  static const std::unordered_set<std::string> per_call_metrics{
+      "actual_encode_bitrate",
+      "encode_frame_rate",
+      "harmonic_framerate",
+      "max_skipped",
+      "min_psnr_dB",
+      "retransmission_bitrate",
+      "sent_packets_loss",
+      "transmission_bitrate",
+      "dropped_frames",
+      "frames_in_flight",
+      "rendered_frames",
+      "average_receive_rate",
+      "average_send_rate",
+      "bytes_discarded_no_receiver",
+      "bytes_received",
+      "bytes_sent",
+      "packets_discarded_no_receiver",
+      "packets_received",
+      "packets_sent",
+      "payload_bytes_received",
+      "payload_bytes_sent",
+      "cpu_usage"};
+
+  for (const Metric& metric : metrics) {
+    if (metric.time_series.samples.empty() && IsEmpty(metric.stats)) {
+      // If there were no data collected for the metric it is expected that 0
+      // will be exported, so add 0 to the samples.
+      PrintResult(metric.name, /*modifier=*/"", metric.test_case,
+                  ToPrintResultValue(0, metric.unit),
+                  ToPrintResultUnit(metric.unit), /*important=*/false,
+                  ToPrintResultImproveDirection(metric.improvement_direction));
+      continue;
+    }
+
+    if (metric.time_series.samples.empty()) {
+      PrintResultMeanAndError(
+          metric.name, /*modifier=*/"", metric.test_case,
+          ToPrintResultValue(*metric.stats.mean, metric.unit),
+          ToPrintResultValue(*metric.stats.stddev, metric.unit),
+          ToPrintResultUnit(metric.unit),
+          /*important=*/false,
+          ToPrintResultImproveDirection(metric.improvement_direction));
+      continue;
+    }
+
+    if (metric.time_series.samples.size() == 1lu &&
+        (per_call_metrics.count(metric.name) > 0 ||
+         NameEndsWithConnected(metric.name))) {
+      // Increase backwards compatibility for 1 value use case.
+      PrintResult(
+          metric.name, /*modifier=*/"", metric.test_case,
+          ToPrintResultValue(metric.time_series.samples[0].value, metric.unit),
+          ToPrintResultUnit(metric.unit), /*important=*/false,
+          ToPrintResultImproveDirection(metric.improvement_direction));
+      continue;
+    }
+
+    SamplesStatsCounter counter;
+    for (size_t i = 0; i < metric.time_series.samples.size(); ++i) {
+      counter.AddSample(SamplesStatsCounter::StatsSample{
+          .value = ToPrintResultValue(metric.time_series.samples[i].value,
+                                      metric.unit),
+          .time = metric.time_series.samples[i].timestamp,
+          .metadata = metric.time_series.samples[i].sample_metadata});
+    }
+
+    PrintResult(metric.name, /*modifier=*/"", metric.test_case, counter,
+                ToPrintResultUnit(metric.unit),
+                /*important=*/false,
+                ToPrintResultImproveDirection(metric.improvement_direction));
+  }
+  return true;
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/print_result_proxy_metrics_exporter.h b/third_party/libwebrtc/api/test/metrics/print_result_proxy_metrics_exporter.h
new file mode 100644
index 0000000000..bad0594972
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/print_result_proxy_metrics_exporter.h
@@ -0,0 +1,32 @@
+/*
+ *  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 API_TEST_METRICS_PRINT_RESULT_PROXY_METRICS_EXPORTER_H_
+#define API_TEST_METRICS_PRINT_RESULT_PROXY_METRICS_EXPORTER_H_
+
+#include "api/array_view.h"
+#include "api/test/metrics/metric.h"
+#include "api/test/metrics/metrics_exporter.h"
+
+namespace webrtc {
+namespace test {
+
+// Proxies all exported metrics to the `webrtc::test::PrintResult` API.
+class PrintResultProxyMetricsExporter : public MetricsExporter {
+ public:
+  ~PrintResultProxyMetricsExporter() override = default;
+
+  bool Export(rtc::ArrayView<const Metric> metrics) override;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_METRICS_PRINT_RESULT_PROXY_METRICS_EXPORTER_H_
diff --git a/third_party/libwebrtc/api/test/metrics/print_result_proxy_metrics_exporter_test.cc b/third_party/libwebrtc/api/test/metrics/print_result_proxy_metrics_exporter_test.cc
new file mode 100644
index 0000000000..768c794b40
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/print_result_proxy_metrics_exporter_test.cc
@@ -0,0 +1,177 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/print_result_proxy_metrics_exporter.h"
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "api/test/metrics/metric.h"
+#include "api/units/timestamp.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+using ::testing::TestWithParam;
+
+std::map<std::string, std::string> DefaultMetadata() {
+  return std::map<std::string, std::string>{{"key", "value"}};
+}
+
+Metric::TimeSeries::Sample Sample(double value) {
+  return Metric::TimeSeries::Sample{.timestamp = Timestamp::Seconds(1),
+                                    .value = value,
+                                    .sample_metadata = DefaultMetadata()};
+}
+
+TEST(PrintResultProxyMetricsExporterTest,
+     ExportMetricsWithTimeSeriesFormatCorrect) {
+  Metric metric1{
+      .name = "test_metric1",
+      .unit = Unit::kMilliseconds,
+      .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+      .test_case = "test_case_name1",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(10), Sample(20)}},
+      .stats =
+          Metric::Stats{.mean = 15.0, .stddev = 5.0, .min = 10.0, .max = 20.0}};
+  Metric metric2{
+      .name = "test_metric2",
+      .unit = Unit::kKilobitsPerSecond,
+      .improvement_direction = ImprovementDirection::kSmallerIsBetter,
+      .test_case = "test_case_name2",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(20), Sample(40)}},
+      .stats = Metric::Stats{
+          .mean = 30.0, .stddev = 10.0, .min = 20.0, .max = 40.0}};
+
+  testing::internal::CaptureStdout();
+  PrintResultProxyMetricsExporter exporter;
+
+  std::string expected =
+      "RESULT test_metric1: test_case_name1= {15,5} "
+      "msBestFitFormat_biggerIsBetter\n"
+      "RESULT test_metric2: test_case_name2= {3750,1250} "
+      "bytesPerSecond_smallerIsBetter\n";
+
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric1, metric2}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(PrintResultProxyMetricsExporterTest,
+     ExportMetricsTimeSeriesOfSingleValueBackwardCompatibleFormat) {
+  // This should be printed as {mean, stddev} despite only being a single data
+  // point.
+  Metric metric1{
+      .name = "available_send_bandwidth",
+      .unit = Unit::kKilobitsPerSecond,
+      .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+      .test_case = "test_case/alice",
+      .metric_metadata = DefaultMetadata(),
+      .time_series = Metric::TimeSeries{.samples = std::vector{Sample(1000)}},
+      .stats = Metric::Stats{
+          .mean = 1000.0, .stddev = 0.0, .min = 1000.0, .max = 1000.0}};
+  // This is a per-call metric that shouldn't have a stddev estimate.
+  Metric metric2{
+      .name = "min_psnr_dB",
+      .unit = Unit::kUnitless,
+      .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+      .test_case = "test_case/alice-video",
+      .metric_metadata = DefaultMetadata(),
+      .time_series = Metric::TimeSeries{.samples = std::vector{Sample(10)}},
+      .stats =
+          Metric::Stats{.mean = 10.0, .stddev = 0.0, .min = 10.0, .max = 10.0}};
+  // This is a per-call metric that shouldn't have a stddev estimate.
+  Metric metric3{
+      .name = "alice_connected",
+      .unit = Unit::kUnitless,
+      .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+      .test_case = "test_case",
+      .metric_metadata = DefaultMetadata(),
+      .time_series = Metric::TimeSeries{.samples = std::vector{Sample(1)}},
+      .stats =
+          Metric::Stats{.mean = 1.0, .stddev = 0.0, .min = 1.0, .max = 1.0}};
+
+  testing::internal::CaptureStdout();
+  PrintResultProxyMetricsExporter exporter;
+
+  std::string expected =
+      "RESULT available_send_bandwidth: test_case/alice= {125000,0} "
+      "bytesPerSecond_biggerIsBetter\n"
+      "RESULT min_psnr_dB: test_case/alice-video= 10 "
+      "unitless_biggerIsBetter\n"
+      "RESULT alice_connected: test_case= 1 "
+      "unitless_biggerIsBetter\n";
+
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric1, metric2, metric3}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(PrintResultProxyMetricsExporterTest,
+     ExportMetricsWithStatsOnlyFormatCorrect) {
+  Metric metric1{.name = "test_metric1",
+                 .unit = Unit::kMilliseconds,
+                 .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+                 .test_case = "test_case_name1",
+                 .metric_metadata = DefaultMetadata(),
+                 .time_series = Metric::TimeSeries{.samples = {}},
+                 .stats = Metric::Stats{
+                     .mean = 15.0, .stddev = 5.0, .min = 10.0, .max = 20.0}};
+  Metric metric2{
+      .name = "test_metric2",
+      .unit = Unit::kKilobitsPerSecond,
+      .improvement_direction = ImprovementDirection::kSmallerIsBetter,
+      .test_case = "test_case_name2",
+      .metric_metadata = DefaultMetadata(),
+      .time_series = Metric::TimeSeries{.samples = {}},
+      .stats = Metric::Stats{
+          .mean = 30.0, .stddev = 10.0, .min = 20.0, .max = 40.0}};
+
+  testing::internal::CaptureStdout();
+  PrintResultProxyMetricsExporter exporter;
+
+  std::string expected =
+      "RESULT test_metric1: test_case_name1= {15,5} "
+      "msBestFitFormat_biggerIsBetter\n"
+      "RESULT test_metric2: test_case_name2= {3750,1250} "
+      "bytesPerSecond_smallerIsBetter\n";
+
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric1, metric2}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(PrintResultProxyMetricsExporterTest, ExportEmptyMetricOnlyFormatCorrect) {
+  Metric metric{.name = "test_metric",
+                .unit = Unit::kMilliseconds,
+                .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+                .test_case = "test_case_name",
+                .metric_metadata = DefaultMetadata(),
+                .time_series = Metric::TimeSeries{.samples = {}},
+                .stats = Metric::Stats{}};
+
+  testing::internal::CaptureStdout();
+  PrintResultProxyMetricsExporter exporter;
+
+  std::string expected =
+      "RESULT test_metric: test_case_name= 0 "
+      "msBestFitFormat_biggerIsBetter\n";
+
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/proto/metric.proto b/third_party/libwebrtc/api/test/metrics/proto/metric.proto
new file mode 100644
index 0000000000..cdd312589d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/proto/metric.proto
@@ -0,0 +1,87 @@
+/*
+ *  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.
+ */
+
+syntax = "proto3";
+
+package webrtc.test_metrics;
+
+// Root message of the proto file. Contains collection of all the metrics.
+message MetricsSet {
+  repeated Metric metrics = 1;
+}
+
+enum Unit {
+  // Default value that has to be defined.
+  UNDEFINED_UNIT = 0;
+  // General unitless value. Can be used either for dimensionless quantities
+  // (ex ratio) or for units not presented in this enum and too specific to add
+  // to this enum.
+  UNITLESS = 1;
+  MILLISECONDS = 2;
+  PERCENT = 3;
+  BYTES = 4;
+  KILOBITS_PER_SECOND = 5;
+  HERTZ = 6;
+  COUNT = 7;
+}
+
+enum ImprovementDirection {
+  // Default value that has to be defined.
+  UNDEFINED_IMPROVEMENT_DIRECTION = 0;
+  BIGGER_IS_BETTER = 1;
+  NEITHER_IS_BETTER = 2;
+  SMALLER_IS_BETTER = 3;
+}
+
+// Single performance metric with all related metadata.
+message Metric {
+  // Metric name, for example PSNR, SSIM, decode_time, etc.
+  string name = 1;
+  Unit unit = 2;
+  ImprovementDirection improvement_direction = 3;
+  // If the metric is generated by a test, this field can be used to specify
+  // this information.
+  string test_case = 4;
+  // Metadata associated with the whole metric.
+  map<string, string> metric_metadata = 5;
+
+  message TimeSeries {
+    message Sample {
+      // Timestamp in microseconds associated with a sample. For example,
+      // the timestamp when the sample was collected.
+      int64 timestamp_us = 1;
+      double value = 2;
+      // Metadata associated with this particular sample.
+      map<string, string> sample_metadata = 3;
+    }
+    // All samples collected for this metric. It can be empty if the Metric
+    // object only contains `stats`.
+    repeated Sample samples = 1;
+  }
+  // Contains all samples of the metric collected during test execution.
+  // It can be empty if the user only stores precomputed statistics into
+  // `stats`.
+  TimeSeries time_series = 6;
+
+  // Contains metric's precomputed statistics based on the `time_series` or if
+  // `time_series` is omitted (has 0 samples) contains precomputed statistics
+  // provided by the metric's calculator.
+  message Stats {
+    // Sample mean of the metric
+    // (https://en.wikipedia.org/wiki/Sample_mean_and_covariance).
+    optional double mean = 1;
+    // Standard deviation (https://en.wikipedia.org/wiki/Standard_deviation).
+    // Is undefined if `time_series` contains only a single sample.
+    optional double stddev = 2;
+    optional double min = 3;
+    optional double max = 4;
+  }
+  Stats stats = 7;
+}
diff --git a/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter.cc b/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter.cc
new file mode 100644
index 0000000000..22243e73e8
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter.cc
@@ -0,0 +1,101 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/stdout_metrics_exporter.h"
+
+#include <stdio.h>
+
+#include <cmath>
+#include <string>
+
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "api/test/metrics/metric.h"
+#include "rtc_base/strings/string_builder.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+// Returns positive integral part of the number.
+int64_t IntegralPart(double value) {
+  return std::lround(std::floor(std::abs(value)));
+}
+
+void AppendWithPrecision(double value,
+                         int digits_after_comma,
+                         rtc::StringBuilder& out) {
+  int64_t multiplier = std::lround(std::pow(10, digits_after_comma));
+  int64_t integral_part = IntegralPart(value);
+  double decimal_part = std::abs(value) - integral_part;
+
+  // If decimal part has leading zeros then when it will be multiplied on
+  // `multiplier`, leading zeros will be lost. To preserve them we add "1"
+  // so then leading digit will be greater than 0 and won't be removed.
+  //
+  // During conversion to the string leading digit has to be stripped.
+  //
+  // Also due to rounding it may happen that leading digit may be incremented,
+  // like with `digits_after_comma` 3 number 1.9995 will be rounded to 2. In
+  // such case this increment has to be propagated to the `integral_part`.
+  int64_t decimal_holder = std::lround((1 + decimal_part) * multiplier);
+  if (decimal_holder >= 2 * multiplier) {
+    // Rounding incremented added leading digit, so we need to transfer 1 to
+    // integral part.
+    integral_part++;
+    decimal_holder -= multiplier;
+  }
+  // Remove trailing zeros.
+  while (decimal_holder % 10 == 0) {
+    decimal_holder /= 10;
+  }
+
+  // Print serialized number to output.
+  if (value < 0) {
+    out << "-";
+  }
+  out << integral_part;
+  if (decimal_holder != 1) {
+    out << "." << std::to_string(decimal_holder).substr(1, digits_after_comma);
+  }
+}
+
+}  // namespace
+
+StdoutMetricsExporter::StdoutMetricsExporter() : output_(stdout) {}
+
+bool StdoutMetricsExporter::Export(rtc::ArrayView<const Metric> metrics) {
+  for (const Metric& metric : metrics) {
+    PrintMetric(metric);
+  }
+  return true;
+}
+
+void StdoutMetricsExporter::PrintMetric(const Metric& metric) {
+  rtc::StringBuilder value_stream;
+  value_stream << metric.test_case << " / " << metric.name << "= {mean=";
+  if (metric.stats.mean.has_value()) {
+    AppendWithPrecision(*metric.stats.mean, 8, value_stream);
+  } else {
+    value_stream << "-";
+  }
+  value_stream << ", stddev=";
+  if (metric.stats.stddev.has_value()) {
+    AppendWithPrecision(*metric.stats.stddev, 8, value_stream);
+  } else {
+    value_stream << "-";
+  }
+  value_stream << "} " << ToString(metric.unit) << " ("
+               << ToString(metric.improvement_direction) << ")";
+
+  fprintf(output_, "RESULT: %s\n", value_stream.str().c_str());
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter.h b/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter.h
new file mode 100644
index 0000000000..2c572cb2ea
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter.h
@@ -0,0 +1,41 @@
+/*
+ *  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 API_TEST_METRICS_STDOUT_METRICS_EXPORTER_H_
+#define API_TEST_METRICS_STDOUT_METRICS_EXPORTER_H_
+
+#include "api/array_view.h"
+#include "api/test/metrics/metric.h"
+#include "api/test/metrics/metrics_exporter.h"
+
+namespace webrtc {
+namespace test {
+
+// Exports all collected metrics to stdout.
+class StdoutMetricsExporter : public MetricsExporter {
+ public:
+  StdoutMetricsExporter();
+  ~StdoutMetricsExporter() override = default;
+
+  StdoutMetricsExporter(const StdoutMetricsExporter&) = delete;
+  StdoutMetricsExporter& operator=(const StdoutMetricsExporter&) = delete;
+
+  bool Export(rtc::ArrayView<const Metric> metrics) override;
+
+ private:
+  void PrintMetric(const Metric& metric);
+
+  FILE* const output_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_METRICS_STDOUT_METRICS_EXPORTER_H_
diff --git a/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter_test.cc b/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter_test.cc
new file mode 100644
index 0000000000..91c06fac5b
--- /dev/null
+++ b/third_party/libwebrtc/api/test/metrics/stdout_metrics_exporter_test.cc
@@ -0,0 +1,211 @@
+/*
+ *  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.
+ */
+#include "api/test/metrics/stdout_metrics_exporter.h"
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "api/test/metrics/metric.h"
+#include "api/units/timestamp.h"
+#include "test/gmock.h"
+#include "test/gtest.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+
+using ::testing::TestWithParam;
+
+std::map<std::string, std::string> DefaultMetadata() {
+  return std::map<std::string, std::string>{{"key", "value"}};
+}
+
+Metric::TimeSeries::Sample Sample(double value) {
+  return Metric::TimeSeries::Sample{.timestamp = Timestamp::Seconds(1),
+                                    .value = value,
+                                    .sample_metadata = DefaultMetadata()};
+}
+
+Metric PsnrForTestFoo(double mean, double stddev) {
+  return Metric{.name = "psnr",
+                .unit = Unit::kUnitless,
+                .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+                .test_case = "foo",
+                .time_series = Metric::TimeSeries{},
+                .stats = Metric::Stats{.mean = mean, .stddev = stddev}};
+}
+
+TEST(StdoutMetricsExporterTest, ExportMetricFormatCorrect) {
+  Metric metric1{
+      .name = "test_metric1",
+      .unit = Unit::kMilliseconds,
+      .improvement_direction = ImprovementDirection::kBiggerIsBetter,
+      .test_case = "test_case_name1",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(10), Sample(20)}},
+      .stats =
+          Metric::Stats{.mean = 15.0, .stddev = 5.0, .min = 10.0, .max = 20.0}};
+  Metric metric2{
+      .name = "test_metric2",
+      .unit = Unit::kKilobitsPerSecond,
+      .improvement_direction = ImprovementDirection::kSmallerIsBetter,
+      .test_case = "test_case_name2",
+      .metric_metadata = DefaultMetadata(),
+      .time_series =
+          Metric::TimeSeries{.samples = std::vector{Sample(20), Sample(40)}},
+      .stats = Metric::Stats{
+          .mean = 30.0, .stddev = 10.0, .min = 20.0, .max = 40.0}};
+
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  std::string expected =
+      "RESULT: test_case_name1 / test_metric1= "
+      "{mean=15, stddev=5} Milliseconds (BiggerIsBetter)\n"
+      "RESULT: test_case_name2 / test_metric2= "
+      "{mean=30, stddev=10} KilobitsPerSecond (SmallerIsBetter)\n";
+
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric1, metric2}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest, PositiveNumberMaxPrecision) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.00000001, 0.00000001);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15.00000001, stddev=0.00000001} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     PositiveNumberTrailingZeroNotAdded) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.12345, 0.12);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15.12345, stddev=0.12} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     PositiveNumberTrailingZeroAreRemoved) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.123450000, 0.120000000);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15.12345, stddev=0.12} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     PositiveNumberRoundsUpOnPrecisionCorrectly) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.000000009, 0.999999999);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15.00000001, stddev=1} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     PositiveNumberRoundsDownOnPrecisionCorrectly) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(15.0000000049, 0.9999999949);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=15, stddev=0.99999999} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest, NegativeNumberMaxPrecision) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.00000001, -0.00000001);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15.00000001, stddev=-0.00000001} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     NegativeNumberTrailingZeroNotAdded) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.12345, -0.12);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15.12345, stddev=-0.12} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     NegativeNumberTrailingZeroAreRemoved) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.123450000, -0.120000000);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15.12345, stddev=-0.12} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     NegativeNumberRoundsUpOnPrecisionCorrectly) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.000000009, -0.999999999);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15.00000001, stddev=-1} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+TEST(StdoutMetricsExporterNumberFormatTest,
+     NegativeNumberRoundsDownOnPrecisionCorrectly) {
+  testing::internal::CaptureStdout();
+  StdoutMetricsExporter exporter;
+
+  Metric metric = PsnrForTestFoo(-15.0000000049, -0.9999999949);
+  std::string expected =
+      "RESULT: foo / psnr= "
+      "{mean=-15, stddev=-0.99999999} Unitless (BiggerIsBetter)\n";
+  EXPECT_TRUE(exporter.Export(std::vector<Metric>{metric}));
+  EXPECT_EQ(expected, testing::internal::GetCapturedStdout());
+}
+
+}  // namespace
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/mock_async_dns_resolver.h b/third_party/libwebrtc/api/test/mock_async_dns_resolver.h
new file mode 100644
index 0000000000..81132c96a5
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_async_dns_resolver.h
@@ -0,0 +1,62 @@
+/*
+ *  Copyright 2021 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_TEST_MOCK_ASYNC_DNS_RESOLVER_H_
+#define API_TEST_MOCK_ASYNC_DNS_RESOLVER_H_
+
+#include <functional>
+#include <memory>
+
+#include "api/async_dns_resolver.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockAsyncDnsResolverResult : public AsyncDnsResolverResult {
+ public:
+  MOCK_METHOD(bool,
+              GetResolvedAddress,
+              (int, rtc::SocketAddress*),
+              (const, override));
+  MOCK_METHOD(int, GetError, (), (const, override));
+};
+
+class MockAsyncDnsResolver : public AsyncDnsResolverInterface {
+ public:
+  MOCK_METHOD(void,
+              Start,
+              (const rtc::SocketAddress&, std::function<void()>),
+              (override));
+  MOCK_METHOD(void,
+              Start,
+              (const rtc::SocketAddress&, int family, std::function<void()>),
+              (override));
+  MOCK_METHOD(AsyncDnsResolverResult&, result, (), (const, override));
+};
+
+class MockAsyncDnsResolverFactory : public AsyncDnsResolverFactoryInterface {
+ public:
+  MOCK_METHOD(std::unique_ptr<webrtc::AsyncDnsResolverInterface>,
+              CreateAndResolve,
+              (const rtc::SocketAddress&, std::function<void()>),
+              (override));
+  MOCK_METHOD(std::unique_ptr<webrtc::AsyncDnsResolverInterface>,
+              CreateAndResolve,
+              (const rtc::SocketAddress&, int, std::function<void()>),
+              (override));
+  MOCK_METHOD(std::unique_ptr<webrtc::AsyncDnsResolverInterface>,
+              Create,
+              (),
+              (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_ASYNC_DNS_RESOLVER_H_
diff --git a/third_party/libwebrtc/api/test/mock_audio_mixer.h b/third_party/libwebrtc/api/test/mock_audio_mixer.h
new file mode 100644
index 0000000000..88dc108ca3
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_audio_mixer.h
@@ -0,0 +1,29 @@
+/*
+ *  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_TEST_MOCK_AUDIO_MIXER_H_
+#define API_TEST_MOCK_AUDIO_MIXER_H_
+
+#include "api/audio/audio_mixer.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+namespace test {
+
+class MockAudioMixer : public AudioMixer {
+ public:
+  MOCK_METHOD(bool, AddSource, (Source*), (override));
+  MOCK_METHOD(void, RemoveSource, (Source*), (override));
+  MOCK_METHOD(void, Mix, (size_t number_of_channels, AudioFrame*), (override));
+};
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_AUDIO_MIXER_H_
diff --git a/third_party/libwebrtc/api/test/mock_audio_sink.h b/third_party/libwebrtc/api/test/mock_audio_sink.h
new file mode 100644
index 0000000000..88f38a3c57
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_audio_sink.h
@@ -0,0 +1,44 @@
+/*
+ *  Copyright 2021 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_TEST_MOCK_AUDIO_SINK_H_
+#define API_TEST_MOCK_AUDIO_SINK_H_
+
+#include "absl/types/optional.h"
+#include "api/media_stream_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockAudioSink : public webrtc::AudioTrackSinkInterface {
+ public:
+  MOCK_METHOD(void,
+              OnData,
+              (const void* audio_data,
+               int bits_per_sample,
+               int sample_rate,
+               size_t number_of_channels,
+               size_t number_of_frames),
+              (override));
+
+  MOCK_METHOD(void,
+              OnData,
+              (const void* audio_data,
+               int bits_per_sample,
+               int sample_rate,
+               size_t number_of_channels,
+               size_t number_of_frames,
+               absl::optional<int64_t> absolute_capture_timestamp_ms),
+              (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_AUDIO_SINK_H_
diff --git a/third_party/libwebrtc/api/test/mock_data_channel.h b/third_party/libwebrtc/api/test/mock_data_channel.h
new file mode 100644
index 0000000000..38730eaa51
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_data_channel.h
@@ -0,0 +1,61 @@
+/*
+ *  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_TEST_MOCK_DATA_CHANNEL_H_
+#define API_TEST_MOCK_DATA_CHANNEL_H_
+
+#include <string>
+
+#include "api/data_channel_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockDataChannelInterface
+    : public rtc::RefCountedObject<webrtc::DataChannelInterface> {
+ public:
+  static rtc::scoped_refptr<MockDataChannelInterface> Create() {
+    return rtc::scoped_refptr<MockDataChannelInterface>(
+        new MockDataChannelInterface());
+  }
+
+  MOCK_METHOD(void,
+              RegisterObserver,
+              (DataChannelObserver * observer),
+              (override));
+  MOCK_METHOD(void, UnregisterObserver, (), (override));
+  MOCK_METHOD(std::string, label, (), (const, override));
+  MOCK_METHOD(bool, reliable, (), (const, override));
+  MOCK_METHOD(bool, ordered, (), (const, override));
+  MOCK_METHOD(uint16_t, maxRetransmitTime, (), (const, override));
+  MOCK_METHOD(uint16_t, maxRetransmits, (), (const, override));
+  MOCK_METHOD(absl::optional<int>, maxRetransmitsOpt, (), (const, override));
+  MOCK_METHOD(absl::optional<int>, maxPacketLifeTime, (), (const, override));
+  MOCK_METHOD(std::string, protocol, (), (const, override));
+  MOCK_METHOD(bool, negotiated, (), (const, override));
+  MOCK_METHOD(int, id, (), (const, override));
+  MOCK_METHOD(Priority, priority, (), (const, override));
+  MOCK_METHOD(DataState, state, (), (const, override));
+  MOCK_METHOD(RTCError, error, (), (const, override));
+  MOCK_METHOD(uint32_t, messages_sent, (), (const, override));
+  MOCK_METHOD(uint64_t, bytes_sent, (), (const, override));
+  MOCK_METHOD(uint32_t, messages_received, (), (const, override));
+  MOCK_METHOD(uint64_t, bytes_received, (), (const, override));
+  MOCK_METHOD(uint64_t, buffered_amount, (), (const, override));
+  MOCK_METHOD(void, Close, (), (override));
+  MOCK_METHOD(bool, Send, (const DataBuffer& buffer), (override));
+
+ protected:
+  MockDataChannelInterface() = default;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_DATA_CHANNEL_H_
diff --git a/third_party/libwebrtc/api/test/mock_dtmf_sender.h b/third_party/libwebrtc/api/test/mock_dtmf_sender.h
new file mode 100644
index 0000000000..9029195025
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_dtmf_sender.h
@@ -0,0 +1,56 @@
+/*
+ *  Copyright 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 API_TEST_MOCK_DTMF_SENDER_H_
+#define API_TEST_MOCK_DTMF_SENDER_H_
+
+#include <string>
+
+#include "api/dtmf_sender_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockDtmfSenderObserver : public DtmfSenderObserverInterface {
+ public:
+  MOCK_METHOD(void,
+              OnToneChange,
+              (const std::string&, const std::string&),
+              (override));
+  MOCK_METHOD(void, OnToneChange, (const std::string&), (override));
+};
+
+static_assert(!std::is_abstract_v<MockDtmfSenderObserver>, "");
+
+class MockDtmfSender : public DtmfSenderInterface {
+ public:
+  static rtc::scoped_refptr<MockDtmfSender> Create() {
+    return rtc::make_ref_counted<MockDtmfSender>();
+  }
+
+  MOCK_METHOD(void,
+              RegisterObserver,
+              (DtmfSenderObserverInterface * observer),
+              (override));
+  MOCK_METHOD(void, UnregisterObserver, (), (override));
+  MOCK_METHOD(bool, CanInsertDtmf, (), (override));
+  MOCK_METHOD(std::string, tones, (), (const override));
+  MOCK_METHOD(int, duration, (), (const override));
+  MOCK_METHOD(int, inter_tone_gap, (), (const override));
+
+ protected:
+  MockDtmfSender() = default;
+};
+
+static_assert(!std::is_abstract_v<rtc::RefCountedObject<MockDtmfSender>>, "");
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_DTMF_SENDER_H_
diff --git a/third_party/libwebrtc/api/test/mock_encoder_selector.h b/third_party/libwebrtc/api/test/mock_encoder_selector.h
new file mode 100644
index 0000000000..2e018d57ba
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_encoder_selector.h
@@ -0,0 +1,42 @@
+/*
+ *  Copyright 2018 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_TEST_MOCK_ENCODER_SELECTOR_H_
+#define API_TEST_MOCK_ENCODER_SELECTOR_H_
+
+#include "api/video_codecs/video_encoder_factory.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockEncoderSelector
+    : public VideoEncoderFactory::EncoderSelectorInterface {
+ public:
+  MOCK_METHOD(void,
+              OnCurrentEncoder,
+              (const SdpVideoFormat& format),
+              (override));
+
+  MOCK_METHOD(absl::optional<SdpVideoFormat>,
+              OnAvailableBitrate,
+              (const DataRate& rate),
+              (override));
+
+  MOCK_METHOD(absl::optional<SdpVideoFormat>,
+              OnResolutionChange,
+              (const RenderResolution& resolution),
+              (override));
+
+  MOCK_METHOD(absl::optional<SdpVideoFormat>, OnEncoderBroken, (), (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_ENCODER_SELECTOR_H_
diff --git a/third_party/libwebrtc/api/test/mock_fec_controller_override.h b/third_party/libwebrtc/api/test/mock_fec_controller_override.h
new file mode 100644
index 0000000000..8f3accbc03
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_fec_controller_override.h
@@ -0,0 +1,26 @@
+/*
+ *  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_TEST_MOCK_FEC_CONTROLLER_OVERRIDE_H_
+#define API_TEST_MOCK_FEC_CONTROLLER_OVERRIDE_H_
+
+#include "api/fec_controller_override.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockFecControllerOverride : public FecControllerOverride {
+ public:
+  MOCK_METHOD(void, SetFecAllowed, (bool fec_allowed), (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_FEC_CONTROLLER_OVERRIDE_H_
diff --git a/third_party/libwebrtc/api/test/mock_frame_decryptor.h b/third_party/libwebrtc/api/test/mock_frame_decryptor.h
new file mode 100644
index 0000000000..9604b96cc2
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_frame_decryptor.h
@@ -0,0 +1,40 @@
+/*
+ *  Copyright 2018 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_TEST_MOCK_FRAME_DECRYPTOR_H_
+#define API_TEST_MOCK_FRAME_DECRYPTOR_H_
+
+#include <vector>
+
+#include "api/crypto/frame_decryptor_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockFrameDecryptor : public FrameDecryptorInterface {
+ public:
+  MOCK_METHOD(Result,
+              Decrypt,
+              (cricket::MediaType,
+               const std::vector<uint32_t>&,
+               rtc::ArrayView<const uint8_t>,
+               rtc::ArrayView<const uint8_t>,
+               rtc::ArrayView<uint8_t>),
+              (override));
+
+  MOCK_METHOD(size_t,
+              GetMaxPlaintextByteSize,
+              (cricket::MediaType, size_t encrypted_frame_size),
+              (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_FRAME_DECRYPTOR_H_
diff --git a/third_party/libwebrtc/api/test/mock_frame_encryptor.h b/third_party/libwebrtc/api/test/mock_frame_encryptor.h
new file mode 100644
index 0000000000..e47321f801
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_frame_encryptor.h
@@ -0,0 +1,39 @@
+/*
+ *  Copyright 2018 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_TEST_MOCK_FRAME_ENCRYPTOR_H_
+#define API_TEST_MOCK_FRAME_ENCRYPTOR_H_
+
+#include "api/crypto/frame_encryptor_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockFrameEncryptor : public FrameEncryptorInterface {
+ public:
+  MOCK_METHOD(int,
+              Encrypt,
+              (cricket::MediaType,
+               uint32_t,
+               rtc::ArrayView<const uint8_t>,
+               rtc::ArrayView<const uint8_t>,
+               rtc::ArrayView<uint8_t>,
+               size_t*),
+              (override));
+
+  MOCK_METHOD(size_t,
+              GetMaxCiphertextByteSize,
+              (cricket::MediaType media_type, size_t frame_size),
+              (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_FRAME_ENCRYPTOR_H_
diff --git a/third_party/libwebrtc/api/test/mock_media_stream_interface.h b/third_party/libwebrtc/api/test/mock_media_stream_interface.h
new file mode 100644
index 0000000000..dfdbab35e9
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_media_stream_interface.h
@@ -0,0 +1,134 @@
+/*
+ *  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_TEST_MOCK_MEDIA_STREAM_INTERFACE_H_
+#define API_TEST_MOCK_MEDIA_STREAM_INTERFACE_H_
+
+#include <string>
+
+#include "api/media_stream_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockAudioSource : public rtc::RefCountedObject<AudioSourceInterface> {
+ public:
+  static rtc::scoped_refptr<MockAudioSource> Create() {
+    return rtc::scoped_refptr<MockAudioSource>(new MockAudioSource());
+  }
+
+  MOCK_METHOD(void,
+              RegisterObserver,
+              (ObserverInterface * observer),
+              (override));
+  MOCK_METHOD(void,
+              UnregisterObserver,
+              (ObserverInterface * observer),
+              (override));
+  MOCK_METHOD(SourceState, state, (), (const, override));
+  MOCK_METHOD(bool, remote, (), (const, override));
+  MOCK_METHOD(void, SetVolume, (double volume), (override));
+  MOCK_METHOD(void,
+              RegisterAudioObserver,
+              (AudioObserver * observer),
+              (override));
+  MOCK_METHOD(void,
+              UnregisterAudioObserver,
+              (AudioObserver * observer),
+              (override));
+  MOCK_METHOD(void, AddSink, (AudioTrackSinkInterface * sink), (override));
+  MOCK_METHOD(void, RemoveSink, (AudioTrackSinkInterface * sink), (override));
+  MOCK_METHOD(const cricket::AudioOptions, options, (), (const, override));
+
+ private:
+  MockAudioSource() = default;
+};
+
+class MockAudioTrack : public rtc::RefCountedObject<AudioTrackInterface> {
+ public:
+  static rtc::scoped_refptr<MockAudioTrack> Create() {
+    return rtc::scoped_refptr<MockAudioTrack>(new MockAudioTrack());
+  }
+
+  MOCK_METHOD(void,
+              RegisterObserver,
+              (ObserverInterface * observer),
+              (override));
+  MOCK_METHOD(void,
+              UnregisterObserver,
+              (ObserverInterface * observer),
+              (override));
+  MOCK_METHOD(std::string, kind, (), (const, override));
+  MOCK_METHOD(std::string, id, (), (const, override));
+  MOCK_METHOD(bool, enabled, (), (const, override));
+  MOCK_METHOD(bool, set_enabled, (bool enable), (override));
+  MOCK_METHOD(TrackState, state, (), (const, override));
+  MOCK_METHOD(AudioSourceInterface*, GetSource, (), (const, override));
+  MOCK_METHOD(void, AddSink, (AudioTrackSinkInterface * sink), (override));
+  MOCK_METHOD(void, RemoveSink, (AudioTrackSinkInterface * sink), (override));
+  MOCK_METHOD(bool, GetSignalLevel, (int* level), (override));
+  MOCK_METHOD(rtc::scoped_refptr<AudioProcessorInterface>,
+              GetAudioProcessor,
+              (),
+              (override));
+
+ private:
+  MockAudioTrack() = default;
+};
+
+class MockMediaStream : public MediaStreamInterface {
+ public:
+  MOCK_METHOD(std::string, id, (), (const override));
+  MOCK_METHOD(AudioTrackVector, GetAudioTracks, (), (override));
+  MOCK_METHOD(VideoTrackVector, GetVideoTracks, (), (override));
+  MOCK_METHOD(rtc::scoped_refptr<AudioTrackInterface>,
+              FindAudioTrack,
+              (const std::string& track_id),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<VideoTrackInterface>,
+              FindVideoTrack,
+              (const std::string& track_id),
+              (override));
+  MOCK_METHOD(bool,
+              AddTrack,
+              (rtc::scoped_refptr<AudioTrackInterface> track),
+              (override));
+  MOCK_METHOD(bool,
+              AddTrack,
+              (rtc::scoped_refptr<VideoTrackInterface> track),
+              (override));
+  MOCK_METHOD(bool,
+              RemoveTrack,
+              (rtc::scoped_refptr<AudioTrackInterface> track),
+              (override));
+  MOCK_METHOD(bool,
+              RemoveTrack,
+              (rtc::scoped_refptr<VideoTrackInterface> track),
+              (override));
+  // Old AddTrack/RemoveTrack methods - slated for removal
+  MOCK_METHOD(bool, AddTrack, (AudioTrackInterface * track), (override));
+  MOCK_METHOD(bool, AddTrack, (VideoTrackInterface * track), (override));
+  MOCK_METHOD(bool, RemoveTrack, (AudioTrackInterface * track), (override));
+  MOCK_METHOD(bool, RemoveTrack, (VideoTrackInterface * track), (override));
+  MOCK_METHOD(void,
+              RegisterObserver,
+              (ObserverInterface * observer),
+              (override));
+  MOCK_METHOD(void,
+              UnregisterObserver,
+              (ObserverInterface * observer),
+              (override));
+};
+
+static_assert(!std::is_abstract_v<rtc::RefCountedObject<MockMediaStream>>, "");
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_MEDIA_STREAM_INTERFACE_H_
diff --git a/third_party/libwebrtc/api/test/mock_packet_socket_factory.h b/third_party/libwebrtc/api/test/mock_packet_socket_factory.h
new file mode 100644
index 0000000000..7e59556385
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_packet_socket_factory.h
@@ -0,0 +1,49 @@
+/*
+ *  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 API_TEST_MOCK_PACKET_SOCKET_FACTORY_H_
+#define API_TEST_MOCK_PACKET_SOCKET_FACTORY_H_
+
+#include <memory>
+#include <string>
+
+#include "api/packet_socket_factory.h"
+#include "test/gmock.h"
+
+namespace rtc {
+class MockPacketSocketFactory : public PacketSocketFactory {
+ public:
+  MOCK_METHOD(AsyncPacketSocket*,
+              CreateUdpSocket,
+              (const SocketAddress&, uint16_t, uint16_t),
+              (override));
+  MOCK_METHOD(AsyncListenSocket*,
+              CreateServerTcpSocket,
+              (const SocketAddress&, uint16_t, uint16_t, int opts),
+              (override));
+  MOCK_METHOD(AsyncPacketSocket*,
+              CreateClientTcpSocket,
+              (const SocketAddress& local_address,
+               const SocketAddress&,
+               const ProxyInfo&,
+               const std::string&,
+               const PacketSocketTcpOptions&),
+              (override));
+  MOCK_METHOD(std::unique_ptr<webrtc::AsyncDnsResolverInterface>,
+              CreateAsyncDnsResolver,
+              (),
+              (override));
+};
+
+static_assert(!std::is_abstract_v<MockPacketSocketFactory>, "");
+
+}  // namespace rtc
+
+#endif  // API_TEST_MOCK_PACKET_SOCKET_FACTORY_H_
diff --git a/third_party/libwebrtc/api/test/mock_peer_connection_factory_interface.h b/third_party/libwebrtc/api/test/mock_peer_connection_factory_interface.h
new file mode 100644
index 0000000000..ae1fbfbbb7
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_peer_connection_factory_interface.h
@@ -0,0 +1,81 @@
+/*
+ *  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_TEST_MOCK_PEER_CONNECTION_FACTORY_INTERFACE_H_
+#define API_TEST_MOCK_PEER_CONNECTION_FACTORY_INTERFACE_H_
+
+#include <memory>
+#include <string>
+
+#include "api/peer_connection_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockPeerConnectionFactoryInterface
+    : public rtc::RefCountedObject<webrtc::PeerConnectionFactoryInterface> {
+ public:
+  static rtc::scoped_refptr<MockPeerConnectionFactoryInterface> Create() {
+    return rtc::scoped_refptr<MockPeerConnectionFactoryInterface>(
+        new MockPeerConnectionFactoryInterface());
+  }
+
+  MOCK_METHOD(void, SetOptions, (const Options&), (override));
+  MOCK_METHOD(rtc::scoped_refptr<PeerConnectionInterface>,
+              CreatePeerConnection,
+              (const PeerConnectionInterface::RTCConfiguration&,
+               PeerConnectionDependencies),
+              (override));
+  MOCK_METHOD(RTCErrorOr<rtc::scoped_refptr<PeerConnectionInterface>>,
+              CreatePeerConnectionOrError,
+              (const PeerConnectionInterface::RTCConfiguration&,
+               PeerConnectionDependencies),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<PeerConnectionInterface>,
+              CreatePeerConnection,
+              (const PeerConnectionInterface::RTCConfiguration&,
+               std::unique_ptr<cricket::PortAllocator>,
+               std::unique_ptr<rtc::RTCCertificateGeneratorInterface>,
+               PeerConnectionObserver*),
+              (override));
+  MOCK_METHOD(RtpCapabilities,
+              GetRtpSenderCapabilities,
+              (cricket::MediaType),
+              (const, override));
+  MOCK_METHOD(RtpCapabilities,
+              GetRtpReceiverCapabilities,
+              (cricket::MediaType),
+              (const, override));
+  MOCK_METHOD(rtc::scoped_refptr<MediaStreamInterface>,
+              CreateLocalMediaStream,
+              (const std::string&),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<AudioSourceInterface>,
+              CreateAudioSource,
+              (const cricket::AudioOptions&),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<VideoTrackInterface>,
+              CreateVideoTrack,
+              (const std::string&, VideoTrackSourceInterface*),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<AudioTrackInterface>,
+              CreateAudioTrack,
+              (const std::string&, AudioSourceInterface*),
+              (override));
+  MOCK_METHOD(bool, StartAecDump, (FILE*, int64_t), (override));
+  MOCK_METHOD(void, StopAecDump, (), (override));
+
+ protected:
+  MockPeerConnectionFactoryInterface() = default;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_PEER_CONNECTION_FACTORY_INTERFACE_H_
diff --git a/third_party/libwebrtc/api/test/mock_peerconnectioninterface.h b/third_party/libwebrtc/api/test/mock_peerconnectioninterface.h
new file mode 100644
index 0000000000..ccc6ce46b1
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_peerconnectioninterface.h
@@ -0,0 +1,213 @@
+/*
+ *  Copyright 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_TEST_MOCK_PEERCONNECTIONINTERFACE_H_
+#define API_TEST_MOCK_PEERCONNECTIONINTERFACE_H_
+
+#include <memory>
+#include <string>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+#include "api/peer_connection_interface.h"
+#include "api/scoped_refptr.h"
+#include "api/sctp_transport_interface.h"
+#include "rtc_base/ref_counted_object.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockPeerConnectionInterface : public webrtc::PeerConnectionInterface {
+ public:
+  static rtc::scoped_refptr<MockPeerConnectionInterface> Create() {
+    return rtc::make_ref_counted<MockPeerConnectionInterface>();
+  }
+
+  // PeerConnectionInterface
+  MOCK_METHOD(rtc::scoped_refptr<StreamCollectionInterface>,
+              local_streams,
+              (),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<StreamCollectionInterface>,
+              remote_streams,
+              (),
+              (override));
+  MOCK_METHOD(bool, AddStream, (MediaStreamInterface*), (override));
+  MOCK_METHOD(void, RemoveStream, (MediaStreamInterface*), (override));
+  MOCK_METHOD(RTCErrorOr<rtc::scoped_refptr<RtpSenderInterface>>,
+              AddTrack,
+              (rtc::scoped_refptr<MediaStreamTrackInterface>,
+               const std::vector<std::string>&),
+              (override));
+  MOCK_METHOD(RTCErrorOr<rtc::scoped_refptr<RtpSenderInterface>>,
+              AddTrack,
+              (rtc::scoped_refptr<MediaStreamTrackInterface>,
+               const std::vector<std::string>&,
+               const std::vector<RtpEncodingParameters>&),
+              (override));
+  MOCK_METHOD(RTCError,
+              RemoveTrackOrError,
+              (rtc::scoped_refptr<RtpSenderInterface>),
+              (override));
+  MOCK_METHOD(RTCErrorOr<rtc::scoped_refptr<RtpTransceiverInterface>>,
+              AddTransceiver,
+              (rtc::scoped_refptr<MediaStreamTrackInterface>),
+              (override));
+  MOCK_METHOD(RTCErrorOr<rtc::scoped_refptr<RtpTransceiverInterface>>,
+              AddTransceiver,
+              (rtc::scoped_refptr<MediaStreamTrackInterface>,
+               const RtpTransceiverInit&),
+              (override));
+  MOCK_METHOD(RTCErrorOr<rtc::scoped_refptr<RtpTransceiverInterface>>,
+              AddTransceiver,
+              (cricket::MediaType),
+              (override));
+  MOCK_METHOD(RTCErrorOr<rtc::scoped_refptr<RtpTransceiverInterface>>,
+              AddTransceiver,
+              (cricket::MediaType, const RtpTransceiverInit&),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<RtpSenderInterface>,
+              CreateSender,
+              (const std::string&, const std::string&),
+              (override));
+  MOCK_METHOD(std::vector<rtc::scoped_refptr<RtpSenderInterface>>,
+              GetSenders,
+              (),
+              (const, override));
+  MOCK_METHOD(std::vector<rtc::scoped_refptr<RtpReceiverInterface>>,
+              GetReceivers,
+              (),
+              (const, override));
+  MOCK_METHOD(std::vector<rtc::scoped_refptr<RtpTransceiverInterface>>,
+              GetTransceivers,
+              (),
+              (const, override));
+  MOCK_METHOD(bool,
+              GetStats,
+              (StatsObserver*, MediaStreamTrackInterface*, StatsOutputLevel),
+              (override));
+  MOCK_METHOD(void, GetStats, (RTCStatsCollectorCallback*), (override));
+  MOCK_METHOD(void,
+              GetStats,
+              (rtc::scoped_refptr<RtpSenderInterface>,
+               rtc::scoped_refptr<RTCStatsCollectorCallback>),
+              (override));
+  MOCK_METHOD(void,
+              GetStats,
+              (rtc::scoped_refptr<RtpReceiverInterface>,
+               rtc::scoped_refptr<RTCStatsCollectorCallback>),
+              (override));
+  MOCK_METHOD(void, ClearStatsCache, (), (override));
+  MOCK_METHOD(rtc::scoped_refptr<SctpTransportInterface>,
+              GetSctpTransport,
+              (),
+              (const, override));
+  MOCK_METHOD(RTCErrorOr<rtc::scoped_refptr<DataChannelInterface>>,
+              CreateDataChannelOrError,
+              (const std::string&, const DataChannelInit*),
+              (override));
+  MOCK_METHOD(const SessionDescriptionInterface*,
+              local_description,
+              (),
+              (const, override));
+  MOCK_METHOD(const SessionDescriptionInterface*,
+              remote_description,
+              (),
+              (const, override));
+  MOCK_METHOD(const SessionDescriptionInterface*,
+              current_local_description,
+              (),
+              (const, override));
+  MOCK_METHOD(const SessionDescriptionInterface*,
+              current_remote_description,
+              (),
+              (const, override));
+  MOCK_METHOD(const SessionDescriptionInterface*,
+              pending_local_description,
+              (),
+              (const, override));
+  MOCK_METHOD(const SessionDescriptionInterface*,
+              pending_remote_description,
+              (),
+              (const, override));
+  MOCK_METHOD(void, RestartIce, (), (override));
+  MOCK_METHOD(void,
+              CreateOffer,
+              (CreateSessionDescriptionObserver*, const RTCOfferAnswerOptions&),
+              (override));
+  MOCK_METHOD(void,
+              CreateAnswer,
+              (CreateSessionDescriptionObserver*, const RTCOfferAnswerOptions&),
+              (override));
+  MOCK_METHOD(void,
+              SetLocalDescription,
+              (SetSessionDescriptionObserver*, SessionDescriptionInterface*),
+              (override));
+  MOCK_METHOD(void,
+              SetRemoteDescription,
+              (SetSessionDescriptionObserver*, SessionDescriptionInterface*),
+              (override));
+  MOCK_METHOD(void,
+              SetRemoteDescription,
+              (std::unique_ptr<SessionDescriptionInterface>,
+               rtc::scoped_refptr<SetRemoteDescriptionObserverInterface>),
+              (override));
+  MOCK_METHOD(PeerConnectionInterface::RTCConfiguration,
+              GetConfiguration,
+              (),
+              (override));
+  MOCK_METHOD(RTCError,
+              SetConfiguration,
+              (const PeerConnectionInterface::RTCConfiguration&),
+              (override));
+  MOCK_METHOD(bool,
+              AddIceCandidate,
+              (const IceCandidateInterface*),
+              (override));
+  MOCK_METHOD(bool,
+              RemoveIceCandidates,
+              (const std::vector<cricket::Candidate>&),
+              (override));
+  MOCK_METHOD(RTCError, SetBitrate, (const BitrateSettings&), (override));
+  MOCK_METHOD(void, SetAudioPlayout, (bool), (override));
+  MOCK_METHOD(void, SetAudioRecording, (bool), (override));
+  MOCK_METHOD(rtc::scoped_refptr<DtlsTransportInterface>,
+              LookupDtlsTransportByMid,
+              (const std::string&),
+              (override));
+  MOCK_METHOD(SignalingState, signaling_state, (), (override));
+  MOCK_METHOD(IceConnectionState, ice_connection_state, (), (override));
+  MOCK_METHOD(IceConnectionState,
+              standardized_ice_connection_state,
+              (),
+              (override));
+  MOCK_METHOD(PeerConnectionState, peer_connection_state, (), (override));
+  MOCK_METHOD(IceGatheringState, ice_gathering_state, (), (override));
+  MOCK_METHOD(absl::optional<bool>, can_trickle_ice_candidates, (), (override));
+  MOCK_METHOD(bool,
+              StartRtcEventLog,
+              (std::unique_ptr<RtcEventLogOutput>, int64_t),
+              (override));
+  MOCK_METHOD(bool,
+              StartRtcEventLog,
+              (std::unique_ptr<RtcEventLogOutput>),
+              (override));
+  MOCK_METHOD(void, StopRtcEventLog, (), (override));
+  MOCK_METHOD(void, Close, (), (override));
+};
+
+static_assert(
+    !std::is_abstract_v<rtc::RefCountedObject<MockPeerConnectionInterface>>,
+    "");
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_PEERCONNECTIONINTERFACE_H_
diff --git a/third_party/libwebrtc/api/test/mock_rtp_transceiver.h b/third_party/libwebrtc/api/test/mock_rtp_transceiver.h
new file mode 100644
index 0000000000..1d21bce5eb
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_rtp_transceiver.h
@@ -0,0 +1,87 @@
+/*
+ *  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_TEST_MOCK_RTP_TRANSCEIVER_H_
+#define API_TEST_MOCK_RTP_TRANSCEIVER_H_
+
+#include <string>
+#include <vector>
+
+#include "api/rtp_transceiver_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockRtpTransceiver : public RtpTransceiverInterface {
+ public:
+  MockRtpTransceiver() = default;
+
+  static rtc::scoped_refptr<MockRtpTransceiver> Create() {
+    return rtc::make_ref_counted<MockRtpTransceiver>();
+  }
+
+  MOCK_METHOD(cricket::MediaType, media_type, (), (const, override));
+  MOCK_METHOD(absl::optional<std::string>, mid, (), (const, override));
+  MOCK_METHOD(rtc::scoped_refptr<RtpSenderInterface>,
+              sender,
+              (),
+              (const, override));
+  MOCK_METHOD(rtc::scoped_refptr<RtpReceiverInterface>,
+              receiver,
+              (),
+              (const, override));
+  MOCK_METHOD(bool, stopped, (), (const, override));
+  MOCK_METHOD(bool, stopping, (), (const, override));
+  MOCK_METHOD(RtpTransceiverDirection, direction, (), (const, override));
+  MOCK_METHOD(void,
+              SetDirection,
+              (RtpTransceiverDirection new_direction),
+              (override));
+  MOCK_METHOD(RTCError,
+              SetDirectionWithError,
+              (RtpTransceiverDirection new_direction),
+              (override));
+  MOCK_METHOD(absl::optional<RtpTransceiverDirection>,
+              current_direction,
+              (),
+              (const, override));
+  MOCK_METHOD(absl::optional<RtpTransceiverDirection>,
+              fired_direction,
+              (),
+              (const, override));
+  MOCK_METHOD(RTCError, StopStandard, (), (override));
+  MOCK_METHOD(void, StopInternal, (), (override));
+  MOCK_METHOD(void, Stop, (), (override));
+  MOCK_METHOD(RTCError,
+              SetCodecPreferences,
+              (rtc::ArrayView<RtpCodecCapability> codecs),
+              (override));
+  MOCK_METHOD(std::vector<RtpCodecCapability>,
+              codec_preferences,
+              (),
+              (const, override));
+  MOCK_METHOD(std::vector<RtpHeaderExtensionCapability>,
+              HeaderExtensionsToOffer,
+              (),
+              (const, override));
+  MOCK_METHOD(std::vector<RtpHeaderExtensionCapability>,
+              HeaderExtensionsNegotiated,
+              (),
+              (const, override));
+  MOCK_METHOD(webrtc::RTCError,
+              SetOfferedRtpHeaderExtensions,
+              (rtc::ArrayView<const RtpHeaderExtensionCapability>
+                   header_extensions_to_offer),
+              (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_RTP_TRANSCEIVER_H_
diff --git a/third_party/libwebrtc/api/test/mock_rtpreceiver.h b/third_party/libwebrtc/api/test/mock_rtpreceiver.h
new file mode 100644
index 0000000000..63318dc32d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_rtpreceiver.h
@@ -0,0 +1,58 @@
+/*
+ *  Copyright 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_TEST_MOCK_RTPRECEIVER_H_
+#define API_TEST_MOCK_RTPRECEIVER_H_
+
+#include <string>
+#include <vector>
+
+#include "api/crypto/frame_decryptor_interface.h"
+#include "api/rtp_receiver_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockRtpReceiver : public rtc::RefCountedObject<RtpReceiverInterface> {
+ public:
+  MOCK_METHOD(rtc::scoped_refptr<MediaStreamTrackInterface>,
+              track,
+              (),
+              (const, override));
+  MOCK_METHOD(std::vector<rtc::scoped_refptr<MediaStreamInterface>>,
+              streams,
+              (),
+              (const, override));
+  MOCK_METHOD(cricket::MediaType, media_type, (), (const, override));
+  MOCK_METHOD(std::string, id, (), (const, override));
+  MOCK_METHOD(RtpParameters, GetParameters, (), (const, override));
+  MOCK_METHOD(bool,
+              SetParameters,
+              (const webrtc::RtpParameters& parameters),
+              (override));
+  MOCK_METHOD(void, SetObserver, (RtpReceiverObserverInterface*), (override));
+  MOCK_METHOD(void,
+              SetJitterBufferMinimumDelay,
+              (absl::optional<double>),
+              (override));
+  MOCK_METHOD(std::vector<RtpSource>, GetSources, (), (const, override));
+  MOCK_METHOD(void,
+              SetFrameDecryptor,
+              (rtc::scoped_refptr<webrtc::FrameDecryptorInterface>),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<webrtc::FrameDecryptorInterface>,
+              GetFrameDecryptor,
+              (),
+              (const, override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_RTPRECEIVER_H_
diff --git a/third_party/libwebrtc/api/test/mock_rtpsender.h b/third_party/libwebrtc/api/test/mock_rtpsender.h
new file mode 100644
index 0000000000..22113678b9
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_rtpsender.h
@@ -0,0 +1,78 @@
+/*
+ *  Copyright 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_TEST_MOCK_RTPSENDER_H_
+#define API_TEST_MOCK_RTPSENDER_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "api/rtp_sender_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockRtpSender : public RtpSenderInterface {
+ public:
+  static rtc::scoped_refptr<MockRtpSender> Create() {
+    return rtc::make_ref_counted<MockRtpSender>();
+  }
+
+  MOCK_METHOD(bool, SetTrack, (MediaStreamTrackInterface*), (override));
+  MOCK_METHOD(rtc::scoped_refptr<MediaStreamTrackInterface>,
+              track,
+              (),
+              (const, override));
+  MOCK_METHOD(rtc::scoped_refptr<DtlsTransportInterface>,
+              dtls_transport,
+              (),
+              (const override));
+  MOCK_METHOD(uint32_t, ssrc, (), (const, override));
+  MOCK_METHOD(cricket::MediaType, media_type, (), (const, override));
+  MOCK_METHOD(std::string, id, (), (const, override));
+  MOCK_METHOD(std::vector<std::string>, stream_ids, (), (const, override));
+  MOCK_METHOD(void, SetStreams, (const std::vector<std::string>&), (override));
+  MOCK_METHOD(std::vector<RtpEncodingParameters>,
+              init_send_encodings,
+              (),
+              (const, override));
+  MOCK_METHOD(RtpParameters, GetParameters, (), (const, override));
+  MOCK_METHOD(RTCError, SetParameters, (const RtpParameters&), (override));
+  MOCK_METHOD(void,
+              SetParametersAsync,
+              (const RtpParameters&, SetParametersCallback),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<DtmfSenderInterface>,
+              GetDtmfSender,
+              (),
+              (const, override));
+  MOCK_METHOD(void,
+              SetFrameEncryptor,
+              (rtc::scoped_refptr<FrameEncryptorInterface>),
+              (override));
+  MOCK_METHOD(rtc::scoped_refptr<FrameEncryptorInterface>,
+              GetFrameEncryptor,
+              (),
+              (const, override));
+  MOCK_METHOD(void,
+              SetEncoderToPacketizerFrameTransformer,
+              (rtc::scoped_refptr<FrameTransformerInterface>),
+              (override));
+  MOCK_METHOD(void,
+              SetEncoderSelector,
+              (std::unique_ptr<VideoEncoderFactory::EncoderSelectorInterface>),
+              (override));
+};
+
+static_assert(!std::is_abstract_v<rtc::RefCountedObject<MockRtpSender>>, "");
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_RTPSENDER_H_
diff --git a/third_party/libwebrtc/api/test/mock_session_description_interface.h b/third_party/libwebrtc/api/test/mock_session_description_interface.h
new file mode 100644
index 0000000000..f0346ceb11
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_session_description_interface.h
@@ -0,0 +1,56 @@
+/*
+ *  Copyright 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 API_TEST_MOCK_SESSION_DESCRIPTION_INTERFACE_H_
+#define API_TEST_MOCK_SESSION_DESCRIPTION_INTERFACE_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "api/jsep.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockSessionDescriptionInterface : public SessionDescriptionInterface {
+ public:
+  MOCK_METHOD(std::unique_ptr<SessionDescriptionInterface>,
+              Clone,
+              (),
+              (const, override));
+  MOCK_METHOD(cricket::SessionDescription*, description, (), (override));
+  MOCK_METHOD(const cricket::SessionDescription*,
+              description,
+              (),
+              (const, override));
+  MOCK_METHOD(std::string, session_id, (), (const, override));
+  MOCK_METHOD(std::string, session_version, (), (const, override));
+  MOCK_METHOD(SdpType, GetType, (), (const, override));
+  MOCK_METHOD(std::string, type, (), (const, override));
+  MOCK_METHOD(bool, AddCandidate, (const IceCandidateInterface*), (override));
+  MOCK_METHOD(size_t,
+              RemoveCandidates,
+              (const std::vector<cricket::Candidate>&),
+              (override));
+  MOCK_METHOD(size_t, number_of_mediasections, (), (const, override));
+  MOCK_METHOD(const IceCandidateCollection*,
+              candidates,
+              (size_t),
+              (const, override));
+  MOCK_METHOD(bool, ToString, (std::string*), (const, override));
+};
+
+static_assert(!std::is_abstract_v<MockSessionDescriptionInterface>);
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_SESSION_DESCRIPTION_INTERFACE_H_
diff --git a/third_party/libwebrtc/api/test/mock_transformable_video_frame.h b/third_party/libwebrtc/api/test/mock_transformable_video_frame.h
new file mode 100644
index 0000000000..18b3de534e
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_transformable_video_frame.h
@@ -0,0 +1,42 @@
+/*
+ *  Copyright (c) 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_TEST_MOCK_TRANSFORMABLE_VIDEO_FRAME_H_
+#define API_TEST_MOCK_TRANSFORMABLE_VIDEO_FRAME_H_
+
+#include <vector>
+
+#include "api/frame_transformer_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockTransformableVideoFrame
+    : public webrtc::TransformableVideoFrameInterface {
+ public:
+  MOCK_METHOD(rtc::ArrayView<const uint8_t>, GetData, (), (const, override));
+  MOCK_METHOD(void, SetData, (rtc::ArrayView<const uint8_t> data), (override));
+  MOCK_METHOD(uint32_t, GetTimestamp, (), (const, override));
+  MOCK_METHOD(uint32_t, GetSsrc, (), (const, override));
+  MOCK_METHOD(bool, IsKeyFrame, (), (const, override));
+  MOCK_METHOD(std::vector<uint8_t>, GetAdditionalData, (), (const, override));
+  MOCK_METHOD(const webrtc::VideoFrameMetadata&,
+              GetMetadata,
+              (),
+              (const, override));
+  MOCK_METHOD(void,
+              SetMetadata,
+              (const webrtc::VideoFrameMetadata&),
+              (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_TRANSFORMABLE_VIDEO_FRAME_H_
diff --git a/third_party/libwebrtc/api/test/mock_video_bitrate_allocator.h b/third_party/libwebrtc/api/test/mock_video_bitrate_allocator.h
new file mode 100644
index 0000000000..76cf49e955
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_video_bitrate_allocator.h
@@ -0,0 +1,28 @@
+/*
+ *  Copyright (c) 2018 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_TEST_MOCK_VIDEO_BITRATE_ALLOCATOR_H_
+#define API_TEST_MOCK_VIDEO_BITRATE_ALLOCATOR_H_
+
+#include "api/video/video_bitrate_allocator.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockVideoBitrateAllocator : public webrtc::VideoBitrateAllocator {
+  MOCK_METHOD(VideoBitrateAllocation,
+              Allocate,
+              (VideoBitrateAllocationParameters parameters),
+              (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_VIDEO_BITRATE_ALLOCATOR_H_
diff --git a/third_party/libwebrtc/api/test/mock_video_bitrate_allocator_factory.h b/third_party/libwebrtc/api/test/mock_video_bitrate_allocator_factory.h
new file mode 100644
index 0000000000..16af191970
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_video_bitrate_allocator_factory.h
@@ -0,0 +1,34 @@
+/*
+ *  Copyright (c) 2018 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_TEST_MOCK_VIDEO_BITRATE_ALLOCATOR_FACTORY_H_
+#define API_TEST_MOCK_VIDEO_BITRATE_ALLOCATOR_FACTORY_H_
+
+#include <memory>
+
+#include "api/video/video_bitrate_allocator_factory.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockVideoBitrateAllocatorFactory
+    : public webrtc::VideoBitrateAllocatorFactory {
+ public:
+  ~MockVideoBitrateAllocatorFactory() override { Die(); }
+  MOCK_METHOD(std::unique_ptr<VideoBitrateAllocator>,
+              CreateVideoBitrateAllocator,
+              (const VideoCodec&),
+              (override));
+  MOCK_METHOD(void, Die, ());
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_VIDEO_BITRATE_ALLOCATOR_FACTORY_H_
diff --git a/third_party/libwebrtc/api/test/mock_video_decoder.h b/third_party/libwebrtc/api/test/mock_video_decoder.h
new file mode 100644
index 0000000000..34f732ca4d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_video_decoder.h
@@ -0,0 +1,70 @@
+/*
+ *  Copyright (c) 2018 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_TEST_MOCK_VIDEO_DECODER_H_
+#define API_TEST_MOCK_VIDEO_DECODER_H_
+
+#include <utility>
+
+#include "api/video_codecs/video_decoder.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockDecodedImageCallback : public DecodedImageCallback {
+ public:
+  MOCK_METHOD(int32_t,
+              Decoded,
+              (VideoFrame & decoded_image),  // NOLINT
+              (override));
+  MOCK_METHOD(int32_t,
+              Decoded,
+              (VideoFrame & decoded_image,  // NOLINT
+               int64_t decode_time_ms),
+              (override));
+  MOCK_METHOD(void,
+              Decoded,
+              (VideoFrame & decoded_image,  // NOLINT
+               absl::optional<int32_t> decode_time_ms,
+               absl::optional<uint8_t> qp),
+              (override));
+};
+
+class MockVideoDecoder : public VideoDecoder {
+ public:
+  MockVideoDecoder() {
+    // Make `Configure` succeed by default, so that individual tests that
+    // verify other methods wouldn't need to stub `Configure`.
+    ON_CALL(*this, Configure).WillByDefault(testing::Return(true));
+  }
+
+  ~MockVideoDecoder() override { Destruct(); }
+
+  MOCK_METHOD(bool, Configure, (const Settings& settings), (override));
+  MOCK_METHOD(int32_t,
+              Decode,
+              (const EncodedImage& input_image,
+               bool missing_frames,
+               int64_t render_time_ms),
+              (override));
+  MOCK_METHOD(int32_t,
+              RegisterDecodeCompleteCallback,
+              (DecodedImageCallback * callback),
+              (override));
+  MOCK_METHOD(int32_t, Release, (), (override));
+
+  // Special utility method that allows a test to monitor/verify when
+  // destruction of the decoder instance occurs.
+  MOCK_METHOD(void, Destruct, (), ());
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_VIDEO_DECODER_H_
diff --git a/third_party/libwebrtc/api/test/mock_video_decoder_factory.h b/third_party/libwebrtc/api/test/mock_video_decoder_factory.h
new file mode 100644
index 0000000000..6150d9f8b5
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_video_decoder_factory.h
@@ -0,0 +1,40 @@
+/*
+ *  Copyright (c) 2017 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_TEST_MOCK_VIDEO_DECODER_FACTORY_H_
+#define API_TEST_MOCK_VIDEO_DECODER_FACTORY_H_
+
+#include <memory>
+#include <vector>
+
+#include "api/video_codecs/sdp_video_format.h"
+#include "api/video_codecs/video_decoder.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockVideoDecoderFactory : public webrtc::VideoDecoderFactory {
+ public:
+  ~MockVideoDecoderFactory() override { Die(); }
+
+  MOCK_METHOD(std::vector<webrtc::SdpVideoFormat>,
+              GetSupportedFormats,
+              (),
+              (const, override));
+  MOCK_METHOD(std::unique_ptr<webrtc::VideoDecoder>,
+              CreateVideoDecoder,
+              (const webrtc::SdpVideoFormat&),
+              (override));
+  MOCK_METHOD(void, Die, ());
+};
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_VIDEO_DECODER_FACTORY_H_
diff --git a/third_party/libwebrtc/api/test/mock_video_encoder.h b/third_party/libwebrtc/api/test/mock_video_encoder.h
new file mode 100644
index 0000000000..11e0f64b3f
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_video_encoder.h
@@ -0,0 +1,73 @@
+/*
+ *  Copyright (c) 2018 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_TEST_MOCK_VIDEO_ENCODER_H_
+#define API_TEST_MOCK_VIDEO_ENCODER_H_
+
+#include <vector>
+
+#include "api/video_codecs/video_encoder.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockEncodedImageCallback : public EncodedImageCallback {
+ public:
+  MOCK_METHOD(Result,
+              OnEncodedImage,
+              (const EncodedImage&, const CodecSpecificInfo*),
+              (override));
+  MOCK_METHOD(void, OnDroppedFrame, (DropReason reason), (override));
+};
+
+class MockVideoEncoder : public VideoEncoder {
+ public:
+  MOCK_METHOD(void,
+              SetFecControllerOverride,
+              (FecControllerOverride*),
+              (override));
+  MOCK_METHOD(int32_t,
+              InitEncode,
+              (const VideoCodec*, int32_t numberOfCores, size_t maxPayloadSize),
+              (override));
+  MOCK_METHOD(int32_t,
+              InitEncode,
+              (const VideoCodec*, const VideoEncoder::Settings& settings),
+              (override));
+
+  MOCK_METHOD(int32_t,
+              Encode,
+              (const VideoFrame& inputImage,
+               const std::vector<VideoFrameType>*),
+              (override));
+  MOCK_METHOD(int32_t,
+              RegisterEncodeCompleteCallback,
+              (EncodedImageCallback*),
+              (override));
+  MOCK_METHOD(int32_t, Release, (), (override));
+  MOCK_METHOD(void,
+              SetRates,
+              (const RateControlParameters& parameters),
+              (override));
+  MOCK_METHOD(void,
+              OnPacketLossRateUpdate,
+              (float packet_loss_rate),
+              (override));
+  MOCK_METHOD(void, OnRttUpdate, (int64_t rtt_ms), (override));
+  MOCK_METHOD(void,
+              OnLossNotification,
+              (const LossNotification& loss_notification),
+              (override));
+  MOCK_METHOD(EncoderInfo, GetEncoderInfo, (), (const, override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_VIDEO_ENCODER_H_
diff --git a/third_party/libwebrtc/api/test/mock_video_encoder_factory.h b/third_party/libwebrtc/api/test/mock_video_encoder_factory.h
new file mode 100644
index 0000000000..02ee7aa15e
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_video_encoder_factory.h
@@ -0,0 +1,42 @@
+/*
+ *  Copyright (c) 2017 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_TEST_MOCK_VIDEO_ENCODER_FACTORY_H_
+#define API_TEST_MOCK_VIDEO_ENCODER_FACTORY_H_
+
+#include <memory>
+#include <vector>
+
+#include "api/video_codecs/sdp_video_format.h"
+#include "api/video_codecs/video_encoder.h"
+#include "api/video_codecs/video_encoder_factory.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockVideoEncoderFactory : public webrtc::VideoEncoderFactory {
+ public:
+  ~MockVideoEncoderFactory() override { Die(); }
+
+  MOCK_METHOD(std::vector<SdpVideoFormat>,
+              GetSupportedFormats,
+              (),
+              (const, override));
+  MOCK_METHOD(std::unique_ptr<VideoEncoder>,
+              CreateVideoEncoder,
+              (const SdpVideoFormat&),
+              (override));
+
+  MOCK_METHOD(void, Die, ());
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_VIDEO_ENCODER_FACTORY_H_
diff --git a/third_party/libwebrtc/api/test/mock_video_track.h b/third_party/libwebrtc/api/test/mock_video_track.h
new file mode 100644
index 0000000000..1212a32527
--- /dev/null
+++ b/third_party/libwebrtc/api/test/mock_video_track.h
@@ -0,0 +1,69 @@
+/*
+ *  Copyright 2021 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_TEST_MOCK_VIDEO_TRACK_H_
+#define API_TEST_MOCK_VIDEO_TRACK_H_
+
+#include <string>
+
+#include "api/media_stream_interface.h"
+#include "api/scoped_refptr.h"
+#include "rtc_base/ref_counted_object.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockVideoTrack
+    : public rtc::RefCountedObject<webrtc::VideoTrackInterface> {
+ public:
+  static rtc::scoped_refptr<MockVideoTrack> Create() {
+    return rtc::scoped_refptr<MockVideoTrack>(new MockVideoTrack());
+  }
+
+  // NotifierInterface
+  MOCK_METHOD(void,
+              RegisterObserver,
+              (ObserverInterface * observer),
+              (override));
+  MOCK_METHOD(void,
+              UnregisterObserver,
+              (ObserverInterface * observer),
+              (override));
+
+  // MediaStreamTrackInterface
+  MOCK_METHOD(std::string, kind, (), (const, override));
+  MOCK_METHOD(std::string, id, (), (const, override));
+  MOCK_METHOD(bool, enabled, (), (const, override));
+  MOCK_METHOD(bool, set_enabled, (bool enable), (override));
+  MOCK_METHOD(TrackState, state, (), (const, override));
+
+  // VideoSourceInterface
+  MOCK_METHOD(void,
+              AddOrUpdateSink,
+              (rtc::VideoSinkInterface<VideoFrame> * sink,
+               const rtc::VideoSinkWants& wants),
+              (override));
+  // RemoveSink must guarantee that at the time the method returns,
+  // there is no current and no future calls to VideoSinkInterface::OnFrame.
+  MOCK_METHOD(void,
+              RemoveSink,
+              (rtc::VideoSinkInterface<VideoFrame> * sink),
+              (override));
+
+  // VideoTrackInterface
+  MOCK_METHOD(VideoTrackSourceInterface*, GetSource, (), (const, override));
+
+  MOCK_METHOD(ContentHint, content_hint, (), (const, override));
+  MOCK_METHOD(void, set_content_hint, (ContentHint hint), (override));
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_VIDEO_TRACK_H_
diff --git a/third_party/libwebrtc/api/test/neteq_simulator.cc b/third_party/libwebrtc/api/test/neteq_simulator.cc
new file mode 100644
index 0000000000..980db96d32
--- /dev/null
+++ b/third_party/libwebrtc/api/test/neteq_simulator.cc
@@ -0,0 +1,26 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#include "api/test/neteq_simulator.h"
+
+namespace webrtc {
+namespace test {
+
+NetEqSimulator::SimulationStepResult::SimulationStepResult() = default;
+NetEqSimulator::SimulationStepResult::SimulationStepResult(
+    const NetEqSimulator::SimulationStepResult& other) = default;
+NetEqSimulator::SimulationStepResult::~SimulationStepResult() = default;
+
+NetEqSimulator::NetEqState::NetEqState() = default;
+NetEqSimulator::NetEqState::NetEqState(const NetEqState& other) = default;
+NetEqSimulator::NetEqState::~NetEqState() = default;
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/neteq_simulator.h b/third_party/libwebrtc/api/test/neteq_simulator.h
new file mode 100644
index 0000000000..88c7ffa681
--- /dev/null
+++ b/third_party/libwebrtc/api/test/neteq_simulator.h
@@ -0,0 +1,82 @@
+/*
+ *  Copyright (c) 2018 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_TEST_NETEQ_SIMULATOR_H_
+#define API_TEST_NETEQ_SIMULATOR_H_
+
+#include <stdint.h>
+
+#include <map>
+#include <vector>
+
+namespace webrtc {
+namespace test {
+
+class NetEqSimulator {
+ public:
+  virtual ~NetEqSimulator() = default;
+
+  enum class Action { kNormal, kExpand, kAccelerate, kPreemptiveExpand };
+
+  // The results of one simulation step.
+  struct SimulationStepResult {
+    SimulationStepResult();
+    SimulationStepResult(const SimulationStepResult& other);
+    ~SimulationStepResult();
+
+    bool is_simulation_finished = false;
+    // The amount of audio produced (in ms) with the actions in this time step.
+    std::map<Action, int> action_times_ms;
+    // The amount of wall clock time (in ms) that elapsed since the previous
+    // event. This is not necessarily equal to the sum of the values in
+    // action_times_ms.
+    int64_t simulation_step_ms = 0;
+  };
+
+  struct NetEqState {
+    NetEqState();
+    NetEqState(const NetEqState& other);
+    ~NetEqState();
+    // The sum of the packet buffer and sync buffer delay.
+    int current_delay_ms = 0;
+    // An indicator that packet loss occurred since the last GetAudio event.
+    bool packet_loss_occurred = false;
+    // An indicator that the packet buffer has been flushed since the last
+    // GetAudio event.
+    bool packet_buffer_flushed = false;
+    // Indicates if the next needed packet is available in the buffer.
+    bool next_packet_available = false;
+    // The inter-arrival times in ms of the packets that have arrived since the
+    // last GetAudio event.
+    std::vector<int> packet_iat_ms;
+    // The current packet size in ms.
+    int packet_size_ms = 0;
+  };
+
+  // Runs the simulation until the end. Returns the duration of the produced
+  // audio in ms.
+  virtual int64_t Run() = 0;
+  // Runs the simulation until we hit the next GetAudio event. If the simulation
+  // is finished, is_simulation_finished will be set to true in the returned
+  // SimulationStepResult.
+  virtual SimulationStepResult RunToNextGetAudio() = 0;
+
+  // Set the next action to be taken by NetEq. This will override any action
+  // that NetEq would normally decide to take.
+  virtual void SetNextAction(Action next_operation) = 0;
+
+  // Get the current state of NetEq.
+  virtual NetEqState GetNetEqState() = 0;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_NETEQ_SIMULATOR_H_
diff --git a/third_party/libwebrtc/api/test/neteq_simulator_factory.cc b/third_party/libwebrtc/api/test/neteq_simulator_factory.cc
new file mode 100644
index 0000000000..82b27e546d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/neteq_simulator_factory.cc
@@ -0,0 +1,71 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#include "api/test/neteq_simulator_factory.h"
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "absl/flags/flag.h"
+#include "absl/flags/parse.h"
+#include "modules/audio_coding/neteq/tools/neteq_test_factory.h"
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+namespace test {
+namespace {
+NetEqTestFactory::Config convertConfig(
+    const NetEqSimulatorFactory::Config& simulation_config,
+    absl::string_view replacement_audio_filename) {
+  NetEqTestFactory::Config config;
+  config.replacement_audio_file = std::string(replacement_audio_filename);
+  config.max_nr_packets_in_buffer = simulation_config.max_nr_packets_in_buffer;
+  config.initial_dummy_packets = simulation_config.initial_dummy_packets;
+  config.skip_get_audio_events = simulation_config.skip_get_audio_events;
+  config.field_trial_string = simulation_config.field_trial_string;
+  config.output_audio_filename = simulation_config.output_audio_filename;
+  config.pythonplot = simulation_config.python_plot_filename.has_value();
+  config.plot_scripts_basename = simulation_config.python_plot_filename;
+  config.textlog = simulation_config.text_log_filename.has_value();
+  config.textlog_filename = simulation_config.text_log_filename;
+  return config;
+}
+}  // namespace
+
+NetEqSimulatorFactory::NetEqSimulatorFactory()
+    : factory_(std::make_unique<NetEqTestFactory>()) {}
+
+NetEqSimulatorFactory::~NetEqSimulatorFactory() = default;
+
+std::unique_ptr<NetEqSimulator> NetEqSimulatorFactory::CreateSimulatorFromFile(
+    absl::string_view event_log_filename,
+    absl::string_view replacement_audio_filename,
+    Config simulation_config) {
+  NetEqTestFactory::Config config =
+      convertConfig(simulation_config, replacement_audio_filename);
+  return factory_->InitializeTestFromFile(
+      std::string(event_log_filename), simulation_config.neteq_factory, config);
+}
+
+std::unique_ptr<NetEqSimulator>
+NetEqSimulatorFactory::CreateSimulatorFromString(
+    absl::string_view event_log_file_contents,
+    absl::string_view replacement_audio_filename,
+    Config simulation_config) {
+  NetEqTestFactory::Config config =
+      convertConfig(simulation_config, replacement_audio_filename);
+  return factory_->InitializeTestFromString(
+      std::string(event_log_file_contents), simulation_config.neteq_factory,
+      config);
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/neteq_simulator_factory.h b/third_party/libwebrtc/api/test/neteq_simulator_factory.h
new file mode 100644
index 0000000000..2a716e665e
--- /dev/null
+++ b/third_party/libwebrtc/api/test/neteq_simulator_factory.h
@@ -0,0 +1,71 @@
+/*
+ *  Copyright (c) 2018 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_TEST_NETEQ_SIMULATOR_FACTORY_H_
+#define API_TEST_NETEQ_SIMULATOR_FACTORY_H_
+
+#include <memory>
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "api/neteq/neteq_factory.h"
+#include "api/test/neteq_simulator.h"
+
+namespace webrtc {
+namespace test {
+
+class NetEqTestFactory;
+
+class NetEqSimulatorFactory {
+ public:
+  NetEqSimulatorFactory();
+  ~NetEqSimulatorFactory();
+  struct Config {
+    // The maximum allowed number of packets in the jitter buffer.
+    int max_nr_packets_in_buffer = 0;
+    // The number of audio packets to insert at the start of the simulation.
+    // Since the simulation is done with a replacement audio file, these
+    // artificial packets will take a small piece of that replacement audio.
+    int initial_dummy_packets = 0;
+    // The number of simulation steps to skip at the start of the simulation.
+    // This removes incoming packets and GetAudio events from the start of the
+    // simulation, until the requested number of GetAudio events has been
+    // removed.
+    int skip_get_audio_events = 0;
+    // A WebRTC field trial string to be used during the simulation.
+    std::string field_trial_string;
+    // A filename for the generated output audio file.
+    absl::optional<std::string> output_audio_filename;
+    // A filename for the python plot.
+    absl::optional<std::string> python_plot_filename;
+    // A filename for the text log.
+    absl::optional<std::string> text_log_filename;
+    // A custom NetEqFactory can be used.
+    NetEqFactory* neteq_factory = nullptr;
+  };
+  std::unique_ptr<NetEqSimulator> CreateSimulatorFromFile(
+      absl::string_view event_log_filename,
+      absl::string_view replacement_audio_filename,
+      Config simulation_config);
+  // The same as above, but pass the file contents as a string.
+  std::unique_ptr<NetEqSimulator> CreateSimulatorFromString(
+      absl::string_view event_log_file_contents,
+      absl::string_view replacement_audio_file,
+      Config simulation_config);
+
+ private:
+  std::unique_ptr<NetEqTestFactory> factory_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_NETEQ_SIMULATOR_FACTORY_H_
diff --git a/third_party/libwebrtc/api/test/network_emulation/BUILD.gn b/third_party/libwebrtc/api/test/network_emulation/BUILD.gn
new file mode 100644
index 0000000000..d009d39a21
--- /dev/null
+++ b/third_party/libwebrtc/api/test/network_emulation/BUILD.gn
@@ -0,0 +1,52 @@
+# Copyright (c) 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.
+
+import("../../../webrtc.gni")
+
+rtc_library("network_emulation") {
+  visibility = [ "*" ]
+
+  sources = [
+    "cross_traffic.h",
+    "network_emulation_interfaces.cc",
+    "network_emulation_interfaces.h",
+  ]
+
+  deps = [
+    "../..:array_view",
+    "../../../rtc_base:checks",
+    "../../../rtc_base:copy_on_write_buffer",
+    "../../../rtc_base:ip_address",
+    "../../../rtc_base:net_helper",
+    "../../../rtc_base:socket_address",
+    "../../numerics",
+    "../../task_queue",
+    "../../units:data_rate",
+    "../../units:data_size",
+    "../../units:time_delta",
+    "../../units:timestamp",
+  ]
+  absl_deps = [ "//third_party/abseil-cpp/absl/types:optional" ]
+}
+
+rtc_library("create_cross_traffic") {
+  visibility = [ "*" ]
+  testonly = true
+
+  sources = [
+    "create_cross_traffic.cc",
+    "create_cross_traffic.h",
+  ]
+
+  deps = [
+    ":network_emulation",
+    "../..:network_emulation_manager_api",
+    "../../../rtc_base/task_utils:repeating_task",
+    "../../../test/network:emulated_network",
+  ]
+}
diff --git a/third_party/libwebrtc/api/test/network_emulation/DEPS b/third_party/libwebrtc/api/test/network_emulation/DEPS
new file mode 100644
index 0000000000..0cf128849d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/network_emulation/DEPS
@@ -0,0 +1,7 @@
+specific_include_rules = {
+  ".*": [
+    "+rtc_base/socket_address.h",
+    "+rtc_base/ip_address.h",
+    "+rtc_base/copy_on_write_buffer.h",
+  ],
+}
diff --git a/third_party/libwebrtc/api/test/network_emulation/create_cross_traffic.cc b/third_party/libwebrtc/api/test/network_emulation/create_cross_traffic.cc
new file mode 100644
index 0000000000..36a535cec6
--- /dev/null
+++ b/third_party/libwebrtc/api/test/network_emulation/create_cross_traffic.cc
@@ -0,0 +1,39 @@
+/*
+ *  Copyright (c) 2021 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.
+ */
+#include "api/test/network_emulation/create_cross_traffic.h"
+
+#include <memory>
+
+#include "rtc_base/task_utils/repeating_task.h"
+#include "test/network/cross_traffic.h"
+
+namespace webrtc {
+
+std::unique_ptr<CrossTrafficGenerator> CreateRandomWalkCrossTraffic(
+    CrossTrafficRoute* traffic_route,
+    RandomWalkConfig config) {
+  return std::make_unique<test::RandomWalkCrossTraffic>(config, traffic_route);
+}
+
+std::unique_ptr<CrossTrafficGenerator> CreatePulsedPeaksCrossTraffic(
+    CrossTrafficRoute* traffic_route,
+    PulsedPeaksConfig config) {
+  return std::make_unique<test::PulsedPeaksCrossTraffic>(config, traffic_route);
+}
+
+std::unique_ptr<CrossTrafficGenerator> CreateFakeTcpCrossTraffic(
+    EmulatedRoute* send_route,
+    EmulatedRoute* ret_route,
+    FakeTcpConfig config) {
+  return std::make_unique<test::FakeTcpCrossTraffic>(config, send_route,
+                                                     ret_route);
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/network_emulation/create_cross_traffic.h b/third_party/libwebrtc/api/test/network_emulation/create_cross_traffic.h
new file mode 100644
index 0000000000..42fc855392
--- /dev/null
+++ b/third_party/libwebrtc/api/test/network_emulation/create_cross_traffic.h
@@ -0,0 +1,37 @@
+/*
+ *  Copyright (c) 2021 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_TEST_NETWORK_EMULATION_CREATE_CROSS_TRAFFIC_H_
+#define API_TEST_NETWORK_EMULATION_CREATE_CROSS_TRAFFIC_H_
+
+#include <memory>
+
+#include "api/test/network_emulation/cross_traffic.h"
+#include "api/test/network_emulation_manager.h"
+
+namespace webrtc {
+
+// This API is still in development and can be changed without prior notice.
+
+std::unique_ptr<CrossTrafficGenerator> CreateRandomWalkCrossTraffic(
+    CrossTrafficRoute* traffic_route,
+    RandomWalkConfig config);
+
+std::unique_ptr<CrossTrafficGenerator> CreatePulsedPeaksCrossTraffic(
+    CrossTrafficRoute* traffic_route,
+    PulsedPeaksConfig config);
+
+std::unique_ptr<CrossTrafficGenerator> CreateFakeTcpCrossTraffic(
+    EmulatedRoute* send_route,
+    EmulatedRoute* ret_route,
+    FakeTcpConfig config);
+
+}  // namespace webrtc
+
+#endif  // API_TEST_NETWORK_EMULATION_CREATE_CROSS_TRAFFIC_H_
diff --git a/third_party/libwebrtc/api/test/network_emulation/cross_traffic.h b/third_party/libwebrtc/api/test/network_emulation/cross_traffic.h
new file mode 100644
index 0000000000..737a93c2fd
--- /dev/null
+++ b/third_party/libwebrtc/api/test/network_emulation/cross_traffic.h
@@ -0,0 +1,85 @@
+/*
+ *  Copyright (c) 2021 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_TEST_NETWORK_EMULATION_CROSS_TRAFFIC_H_
+#define API_TEST_NETWORK_EMULATION_CROSS_TRAFFIC_H_
+
+#include "api/task_queue/task_queue_base.h"
+#include "api/test/network_emulation/network_emulation_interfaces.h"
+#include "api/units/data_rate.h"
+#include "api/units/data_size.h"
+#include "api/units/time_delta.h"
+#include "api/units/timestamp.h"
+
+namespace webrtc {
+
+// This API is still in development and can be changed without prior notice.
+
+// Represents the endpoint for cross traffic that is going through the network.
+// It can be used to emulate unexpected network load.
+class CrossTrafficRoute {
+ public:
+  virtual ~CrossTrafficRoute() = default;
+
+  // Triggers sending of dummy packets with size `packet_size` bytes.
+  virtual void TriggerPacketBurst(size_t num_packets, size_t packet_size) = 0;
+  // Sends a packet over the nodes. The content of the packet is unspecified;
+  // only the size metter for the emulation purposes.
+  virtual void SendPacket(size_t packet_size) = 0;
+  // Sends a packet over the nodes and runs `action` when it has been delivered.
+  virtual void NetworkDelayedAction(size_t packet_size,
+                                    std::function<void()> action) = 0;
+};
+
+// Describes a way of generating cross traffic on some route. Used by
+// NetworkEmulationManager to produce cross traffic during some period of time.
+class CrossTrafficGenerator {
+ public:
+  virtual ~CrossTrafficGenerator() = default;
+
+  // Time between Process calls.
+  virtual TimeDelta GetProcessInterval() const = 0;
+
+  // Called periodically by NetworkEmulationManager. Generates traffic on the
+  // route.
+  virtual void Process(Timestamp at_time) = 0;
+};
+
+// Config of a cross traffic generator. Generated traffic rises and falls
+// randomly.
+struct RandomWalkConfig {
+  int random_seed = 1;
+  DataRate peak_rate = DataRate::KilobitsPerSec(100);
+  DataSize min_packet_size = DataSize::Bytes(200);
+  TimeDelta min_packet_interval = TimeDelta::Millis(1);
+  TimeDelta update_interval = TimeDelta::Millis(200);
+  double variance = 0.6;
+  double bias = -0.1;
+};
+
+// Config of a cross traffic generator. Generated traffic has form of periodic
+// peaks alternating with periods of silence.
+struct PulsedPeaksConfig {
+  DataRate peak_rate = DataRate::KilobitsPerSec(100);
+  DataSize min_packet_size = DataSize::Bytes(200);
+  TimeDelta min_packet_interval = TimeDelta::Millis(1);
+  TimeDelta send_duration = TimeDelta::Millis(100);
+  TimeDelta hold_duration = TimeDelta::Millis(2000);
+};
+
+struct FakeTcpConfig {
+  DataSize packet_size = DataSize::Bytes(1200);
+  DataSize send_limit = DataSize::PlusInfinity();
+  TimeDelta process_interval = TimeDelta::Millis(200);
+  TimeDelta packet_timeout = TimeDelta::Seconds(1);
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_NETWORK_EMULATION_CROSS_TRAFFIC_H_
diff --git a/third_party/libwebrtc/api/test/network_emulation/network_emulation_interfaces.cc b/third_party/libwebrtc/api/test/network_emulation/network_emulation_interfaces.cc
new file mode 100644
index 0000000000..0f3a7f8ffd
--- /dev/null
+++ b/third_party/libwebrtc/api/test/network_emulation/network_emulation_interfaces.cc
@@ -0,0 +1,46 @@
+/*
+ *  Copyright (c) 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.
+ */
+#include "api/test/network_emulation/network_emulation_interfaces.h"
+
+#include "rtc_base/net_helper.h"
+
+namespace webrtc {
+
+EmulatedIpPacket::EmulatedIpPacket(const rtc::SocketAddress& from,
+                                   const rtc::SocketAddress& to,
+                                   rtc::CopyOnWriteBuffer data,
+                                   Timestamp arrival_time,
+                                   uint16_t application_overhead)
+    : from(from),
+      to(to),
+      data(data),
+      headers_size(to.ipaddr().overhead() + application_overhead +
+                   cricket::kUdpHeaderSize),
+      arrival_time(arrival_time) {
+  RTC_DCHECK(to.family() == AF_INET || to.family() == AF_INET6);
+}
+
+DataRate EmulatedNetworkOutgoingStats::AverageSendRate() const {
+  RTC_DCHECK_GE(packets_sent, 2);
+  RTC_DCHECK(first_packet_sent_time.IsFinite());
+  RTC_DCHECK(last_packet_sent_time.IsFinite());
+  return (bytes_sent - first_sent_packet_size) /
+         (last_packet_sent_time - first_packet_sent_time);
+}
+
+DataRate EmulatedNetworkIncomingStats::AverageReceiveRate() const {
+  RTC_DCHECK_GE(packets_received, 2);
+  RTC_DCHECK(first_packet_received_time.IsFinite());
+  RTC_DCHECK(last_packet_received_time.IsFinite());
+  return (bytes_received - first_received_packet_size) /
+         (last_packet_received_time - first_packet_received_time);
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/network_emulation/network_emulation_interfaces.h b/third_party/libwebrtc/api/test/network_emulation/network_emulation_interfaces.h
new file mode 100644
index 0000000000..7cab07b75d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/network_emulation/network_emulation_interfaces.h
@@ -0,0 +1,311 @@
+/*
+ *  Copyright (c) 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_TEST_NETWORK_EMULATION_NETWORK_EMULATION_INTERFACES_H_
+#define API_TEST_NETWORK_EMULATION_NETWORK_EMULATION_INTERFACES_H_
+
+#include <map>
+#include <memory>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "api/numerics/samples_stats_counter.h"
+#include "api/units/data_rate.h"
+#include "api/units/data_size.h"
+#include "api/units/timestamp.h"
+#include "rtc_base/copy_on_write_buffer.h"
+#include "rtc_base/ip_address.h"
+#include "rtc_base/socket_address.h"
+
+namespace webrtc {
+
+struct EmulatedIpPacket {
+ public:
+  EmulatedIpPacket(const rtc::SocketAddress& from,
+                   const rtc::SocketAddress& to,
+                   rtc::CopyOnWriteBuffer data,
+                   Timestamp arrival_time,
+                   uint16_t application_overhead = 0);
+  ~EmulatedIpPacket() = default;
+  // This object is not copyable or assignable.
+  EmulatedIpPacket(const EmulatedIpPacket&) = delete;
+  EmulatedIpPacket& operator=(const EmulatedIpPacket&) = delete;
+  // This object is only moveable.
+  EmulatedIpPacket(EmulatedIpPacket&&) = default;
+  EmulatedIpPacket& operator=(EmulatedIpPacket&&) = default;
+
+  size_t size() const { return data.size(); }
+  const uint8_t* cdata() const { return data.cdata(); }
+
+  size_t ip_packet_size() const { return size() + headers_size; }
+  rtc::SocketAddress from;
+  rtc::SocketAddress to;
+  // Holds the UDP payload.
+  rtc::CopyOnWriteBuffer data;
+  uint16_t headers_size;
+  Timestamp arrival_time;
+};
+
+// Interface for handling IP packets from an emulated network. This is used with
+// EmulatedEndpoint to receive packets on a specific port.
+class EmulatedNetworkReceiverInterface {
+ public:
+  virtual ~EmulatedNetworkReceiverInterface() = default;
+
+  virtual void OnPacketReceived(EmulatedIpPacket packet) = 0;
+};
+
+struct EmulatedNetworkOutgoingStats {
+  int64_t packets_sent = 0;
+
+  DataSize bytes_sent = DataSize::Zero();
+
+  // Sizes of all sent packets.
+  // Collected iff EmulatedNetworkStatsGatheringMode::kDebug is enabled.
+  SamplesStatsCounter sent_packets_size;
+
+  DataSize first_sent_packet_size = DataSize::Zero();
+
+  // Time of the first packet sent or infinite value if no packets were sent.
+  Timestamp first_packet_sent_time = Timestamp::PlusInfinity();
+
+  // Time of the last packet sent or infinite value if no packets were sent.
+  Timestamp last_packet_sent_time = Timestamp::MinusInfinity();
+
+  // Returns average send rate. Requires that at least 2 packets were sent.
+  DataRate AverageSendRate() const;
+};
+
+struct EmulatedNetworkIncomingStats {
+  // Total amount of packets received with or without destination.
+  int64_t packets_received = 0;
+
+  // Total amount of bytes in received packets.
+  DataSize bytes_received = DataSize::Zero();
+
+  // Sizes of all received packets.
+  // Collected iff EmulatedNetworkStatsGatheringMode::kDebug is enabled.
+  SamplesStatsCounter received_packets_size;
+
+  // Total amount of packets that were received, but no destination was found.
+  int64_t packets_discarded_no_receiver = 0;
+
+  // Total amount of bytes in discarded packets.
+  DataSize bytes_discarded_no_receiver = DataSize::Zero();
+
+  // Sizes of all packets that were received, but no destination was found.
+  // Collected iff EmulatedNetworkStatsGatheringMode::kDebug is enabled.
+  SamplesStatsCounter packets_discarded_no_receiver_size;
+
+  DataSize first_received_packet_size = DataSize::Zero();
+
+  // Time of the first packet received or infinite value if no packets were
+  // received.
+  Timestamp first_packet_received_time = Timestamp::PlusInfinity();
+
+  // Time of the last packet received or infinite value if no packets were
+  // received.
+  Timestamp last_packet_received_time = Timestamp::MinusInfinity();
+
+  DataRate AverageReceiveRate() const;
+};
+
+struct EmulatedNetworkStats {
+  int64_t PacketsSent() const { return overall_outgoing_stats.packets_sent; }
+
+  DataSize BytesSent() const { return overall_outgoing_stats.bytes_sent; }
+
+  // Returns the timestamped sizes of all sent packets.
+  // Returned reference is valid until the next call to a non-const method.
+  // Collected iff EmulatedNetworkStatsGatheringMode::kDebug is enabled.
+  const SamplesStatsCounter& SentPacketsSizeCounter() const {
+    return overall_outgoing_stats.sent_packets_size;
+  }
+
+  DataSize FirstSentPacketSize() const {
+    return overall_outgoing_stats.first_sent_packet_size;
+  }
+
+  // Returns time of the first packet sent or infinite value if no packets were
+  // sent.
+  Timestamp FirstPacketSentTime() const {
+    return overall_outgoing_stats.first_packet_sent_time;
+  }
+
+  // Returns time of the last packet sent or infinite value if no packets were
+  // sent.
+  Timestamp LastPacketSentTime() const {
+    return overall_outgoing_stats.last_packet_sent_time;
+  }
+
+  DataRate AverageSendRate() const {
+    return overall_outgoing_stats.AverageSendRate();
+  }
+
+  // Total amount of packets received regardless of the destination address.
+  int64_t PacketsReceived() const {
+    return overall_incoming_stats.packets_received;
+  }
+
+  // Total amount of bytes in received packets.
+  DataSize BytesReceived() const {
+    return overall_incoming_stats.bytes_received;
+  }
+
+  // Returns the timestamped sizes of all received packets.
+  // Returned reference is valid until the next call to a non-const method.
+  // Collected iff EmulatedNetworkStatsGatheringMode::kDebug is enabled.
+  const SamplesStatsCounter& ReceivedPacketsSizeCounter() const {
+    return overall_incoming_stats.received_packets_size;
+  }
+
+  // Total amount of packets that were received, but no destination was found.
+  int64_t PacketsDiscardedNoReceiver() const {
+    return overall_incoming_stats.packets_discarded_no_receiver;
+  }
+
+  // Total amount of bytes in dropped packets.
+  DataSize BytesDiscardedNoReceiver() const {
+    return overall_incoming_stats.bytes_discarded_no_receiver;
+  }
+
+  // Returns counter with timestamped sizes of all packets that were received,
+  // but no destination was found.
+  // Returned reference is valid until the next call to a non-const method.
+  // Collected iff EmulatedNetworkStatsGatheringMode::kDebug is enabled.
+  const SamplesStatsCounter& PacketsDiscardedNoReceiverSizeCounter() const {
+    return overall_incoming_stats.packets_discarded_no_receiver_size;
+  }
+
+  DataSize FirstReceivedPacketSize() const {
+    return overall_incoming_stats.first_received_packet_size;
+  }
+
+  // Returns time of the first packet received or infinite value if no packets
+  // were received.
+  Timestamp FirstPacketReceivedTime() const {
+    return overall_incoming_stats.first_packet_received_time;
+  }
+
+  // Returns time of the last packet received or infinite value if no packets
+  // were received.
+  Timestamp LastPacketReceivedTime() const {
+    return overall_incoming_stats.last_packet_received_time;
+  }
+
+  DataRate AverageReceiveRate() const {
+    return overall_incoming_stats.AverageReceiveRate();
+  }
+
+  // List of IP addresses that were used to send data considered in this stats
+  // object.
+  std::vector<rtc::IPAddress> local_addresses;
+
+  // Overall outgoing stats for all IP addresses which were requested.
+  EmulatedNetworkOutgoingStats overall_outgoing_stats;
+
+  // Overall incoming stats for all IP addresses from which data was received
+  // on requested interfaces.
+  EmulatedNetworkIncomingStats overall_incoming_stats;
+
+  std::map<rtc::IPAddress, EmulatedNetworkOutgoingStats>
+      outgoing_stats_per_destination;
+  std::map<rtc::IPAddress, EmulatedNetworkIncomingStats>
+      incoming_stats_per_source;
+
+  // Duration between packet was received on network interface and was
+  // dispatched to the network in microseconds.
+  // Collected iff EmulatedNetworkStatsGatheringMode::kDebug is enabled.
+  SamplesStatsCounter sent_packets_queue_wait_time_us;
+};
+
+struct EmulatedNetworkNodeStats {
+  // Amount of time each packet spent in the emulated network node for which
+  // stats were collected.
+  //
+  // Collected iff EmulatedNetworkStatsGatheringMode::kDebug is enabled.
+  SamplesStatsCounter packet_transport_time;
+
+  // For each packet contains its size divided on the amount of time which it
+  // spent in the emulated network node for which stats were collected.
+  //
+  // Collected iff EmulatedNetworkStatsGatheringMode::kDebug is enabled.
+  SamplesStatsCounter size_to_packet_transport_time;
+};
+
+// EmulatedEndpoint is an abstraction for network interface on device. Instances
+// of this are created by NetworkEmulationManager::CreateEndpoint and
+// thread safe.
+class EmulatedEndpoint : public EmulatedNetworkReceiverInterface {
+ public:
+  // Send packet into network.
+  // `from` will be used to set source address for the packet in destination
+  // socket.
+  // `to` will be used for routing verification and picking right socket by port
+  // on destination endpoint.
+  virtual void SendPacket(const rtc::SocketAddress& from,
+                          const rtc::SocketAddress& to,
+                          rtc::CopyOnWriteBuffer packet_data,
+                          uint16_t application_overhead = 0) = 0;
+
+  // Binds receiver to this endpoint to send and receive data.
+  // `desired_port` is a port that should be used. If it is equal to 0,
+  // endpoint will pick the first available port starting from
+  // `kFirstEphemeralPort`.
+  //
+  // Returns the port, that should be used (it will be equals to desired, if
+  // `desired_port` != 0 and is free or will be the one, selected by endpoint)
+  // or absl::nullopt if desired_port in used. Also fails if there are no more
+  // free ports to bind to.
+  //
+  // The Bind- and Unbind-methods must not be called from within a bound
+  // receiver's OnPacketReceived method.
+  virtual absl::optional<uint16_t> BindReceiver(
+      uint16_t desired_port,
+      EmulatedNetworkReceiverInterface* receiver) = 0;
+  // Unbinds receiver from the specified port. Do nothing if no receiver was
+  // bound before. After this method returns, no more packets can be delivered
+  // to the receiver, and it is safe to destroy it.
+  virtual void UnbindReceiver(uint16_t port) = 0;
+  // Binds receiver that will accept all packets which arrived on any port
+  // for which there are no bound receiver.
+  virtual void BindDefaultReceiver(
+      EmulatedNetworkReceiverInterface* receiver) = 0;
+  // Unbinds default receiver. Do nothing if no default receiver was bound
+  // before.
+  virtual void UnbindDefaultReceiver() = 0;
+  virtual rtc::IPAddress GetPeerLocalAddress() const = 0;
+
+ private:
+  // Ensure that there can be no other subclass than EmulatedEndpointImpl. This
+  // means that it's always safe to downcast EmulatedEndpoint instances to
+  // EmulatedEndpointImpl.
+  friend class EmulatedEndpointImpl;
+  EmulatedEndpoint() = default;
+};
+
+// Simulates a TCP connection, this roughly implements the Reno algorithm. In
+// difference from TCP this only support sending messages with a fixed length,
+// no streaming. This is useful to simulate signaling and cross traffic using
+// message based protocols such as HTTP. It differs from UDP messages in that
+// they are guranteed to be delivered eventually, even on lossy networks.
+class TcpMessageRoute {
+ public:
+  // Sends a TCP message of the given `size` over the route, `on_received` is
+  // called when the message has been delivered. Note that the connection
+  // parameters are reset iff there's no currently pending message on the route.
+  virtual void SendMessage(size_t size, std::function<void()> on_received) = 0;
+
+ protected:
+  ~TcpMessageRoute() = default;
+};
+}  // namespace webrtc
+
+#endif  // API_TEST_NETWORK_EMULATION_NETWORK_EMULATION_INTERFACES_H_
diff --git a/third_party/libwebrtc/api/test/network_emulation_manager.cc b/third_party/libwebrtc/api/test/network_emulation_manager.cc
new file mode 100644
index 0000000000..236e2f0e17
--- /dev/null
+++ b/third_party/libwebrtc/api/test/network_emulation_manager.cc
@@ -0,0 +1,122 @@
+/*
+ *  Copyright (c) 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.
+ */
+#include "api/test/network_emulation_manager.h"
+
+#include <utility>
+
+#include "call/simulated_network.h"
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+
+bool AbslParseFlag(absl::string_view text, TimeMode* mode, std::string* error) {
+  if (text == "realtime") {
+    *mode = TimeMode::kRealTime;
+    return true;
+  }
+  if (text == "simulated") {
+    *mode = TimeMode::kSimulated;
+    return true;
+  }
+  *error =
+      "Unknown value for TimeMode enum. Options are 'realtime' or 'simulated'";
+  return false;
+}
+
+std::string AbslUnparseFlag(TimeMode mode) {
+  switch (mode) {
+    case TimeMode::kRealTime:
+      return "realtime";
+    case TimeMode::kSimulated:
+      return "simulated";
+  }
+  RTC_CHECK_NOTREACHED();
+  return "unknown";
+}
+
+NetworkEmulationManager::SimulatedNetworkNode::Builder&
+NetworkEmulationManager::SimulatedNetworkNode::Builder::config(
+    BuiltInNetworkBehaviorConfig config) {
+  config_ = config;
+  return *this;
+}
+
+NetworkEmulationManager::SimulatedNetworkNode::Builder&
+NetworkEmulationManager::SimulatedNetworkNode::Builder::delay_ms(
+    int queue_delay_ms) {
+  config_.queue_delay_ms = queue_delay_ms;
+  return *this;
+}
+
+NetworkEmulationManager::SimulatedNetworkNode::Builder&
+NetworkEmulationManager::SimulatedNetworkNode::Builder::capacity_kbps(
+    int link_capacity_kbps) {
+  config_.link_capacity_kbps = link_capacity_kbps;
+  return *this;
+}
+
+NetworkEmulationManager::SimulatedNetworkNode::Builder&
+NetworkEmulationManager::SimulatedNetworkNode::Builder::capacity_Mbps(
+    int link_capacity_Mbps) {
+  config_.link_capacity_kbps = link_capacity_Mbps * 1000;
+  return *this;
+}
+
+NetworkEmulationManager::SimulatedNetworkNode::Builder&
+NetworkEmulationManager::SimulatedNetworkNode::Builder::loss(double loss_rate) {
+  config_.loss_percent = std::round(loss_rate * 100);
+  return *this;
+}
+
+NetworkEmulationManager::SimulatedNetworkNode::Builder&
+NetworkEmulationManager::SimulatedNetworkNode::Builder::packet_queue_length(
+    int max_queue_length_in_packets) {
+  config_.queue_length_packets = max_queue_length_in_packets;
+  return *this;
+}
+
+NetworkEmulationManager::SimulatedNetworkNode
+NetworkEmulationManager::SimulatedNetworkNode::Builder::Build(
+    uint64_t random_seed) const {
+  RTC_CHECK(net_);
+  return Build(net_, random_seed);
+}
+
+NetworkEmulationManager::SimulatedNetworkNode
+NetworkEmulationManager::SimulatedNetworkNode::Builder::Build(
+    NetworkEmulationManager* net,
+    uint64_t random_seed) const {
+  RTC_CHECK(net);
+  RTC_CHECK(net_ == nullptr || net_ == net);
+  SimulatedNetworkNode res;
+  auto behavior = std::make_unique<SimulatedNetwork>(config_, random_seed);
+  res.simulation = behavior.get();
+  res.node = net->CreateEmulatedNode(std::move(behavior));
+  return res;
+}
+
+std::pair<EmulatedNetworkManagerInterface*, EmulatedNetworkManagerInterface*>
+NetworkEmulationManager::CreateEndpointPairWithTwoWayRoutes(
+    const BuiltInNetworkBehaviorConfig& config) {
+  auto* alice_node = CreateEmulatedNode(config);
+  auto* bob_node = CreateEmulatedNode(config);
+
+  auto* alice_endpoint = CreateEndpoint(EmulatedEndpointConfig());
+  auto* bob_endpoint = CreateEndpoint(EmulatedEndpointConfig());
+
+  CreateRoute(alice_endpoint, {alice_node}, bob_endpoint);
+  CreateRoute(bob_endpoint, {bob_node}, alice_endpoint);
+
+  return {
+      CreateEmulatedNetworkManagerInterface({alice_endpoint}),
+      CreateEmulatedNetworkManagerInterface({bob_endpoint}),
+  };
+}
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/network_emulation_manager.h b/third_party/libwebrtc/api/test/network_emulation_manager.h
new file mode 100644
index 0000000000..bc9279d306
--- /dev/null
+++ b/third_party/libwebrtc/api/test/network_emulation_manager.h
@@ -0,0 +1,357 @@
+/*
+ *  Copyright (c) 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_TEST_NETWORK_EMULATION_MANAGER_H_
+#define API_TEST_NETWORK_EMULATION_MANAGER_H_
+
+#include <functional>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "api/array_view.h"
+#include "api/packet_socket_factory.h"
+#include "api/test/network_emulation/cross_traffic.h"
+#include "api/test/network_emulation/network_emulation_interfaces.h"
+#include "api/test/peer_network_dependencies.h"
+#include "api/test/simulated_network.h"
+#include "api/test/time_controller.h"
+#include "api/units/timestamp.h"
+#include "rtc_base/network.h"
+#include "rtc_base/network_constants.h"
+#include "rtc_base/thread.h"
+
+namespace webrtc {
+
+// This API is still in development and can be changed without prior notice.
+
+// These classes are forward declared here, because they used as handles, to
+// make it possible for client code to operate with these abstractions and build
+// required network configuration. With forward declaration here implementation
+// is more readable, than with interfaces approach and cause user needn't any
+// API methods on these abstractions it is acceptable here.
+
+// EmulatedNetworkNode is an abstraction for some network in the real world,
+// like 3G network between peers, or Wi-Fi for one peer and LTE for another.
+// Multiple networks can be joined into chain emulating a network path from
+// one peer to another.
+class EmulatedNetworkNode;
+
+// EmulatedRoute is handle for single route from one network interface on one
+// peer device to another network interface on another peer device.
+class EmulatedRoute;
+
+enum class EmulatedNetworkStatsGatheringMode {
+  // Gather main network stats counters. See more details on which particular
+  // metrics are collected in the `EmulatedNetworkStats` and
+  // `EmulatedNetworkNodeStats` documentation.
+  kDefault,
+  // kDefault + also gather per packet statistics. In this mode more memory
+  // will be used.
+  kDebug
+};
+
+struct EmulatedEndpointConfig {
+  enum class IpAddressFamily { kIpv4, kIpv6 };
+
+  // If specified will be used to name endpoint for logging purposes.
+  absl::optional<std::string> name = absl::nullopt;
+  IpAddressFamily generated_ip_family = IpAddressFamily::kIpv4;
+  // If specified will be used as IP address for endpoint node. Must be unique
+  // among all created nodes.
+  absl::optional<rtc::IPAddress> ip;
+  // Should endpoint be enabled or not, when it will be created.
+  // Enabled endpoints will be available for webrtc to send packets.
+  bool start_as_enabled = true;
+  // Network type which will be used to represent endpoint to WebRTC.
+  rtc::AdapterType type = rtc::AdapterType::ADAPTER_TYPE_UNKNOWN;
+  // Allow endpoint to send packets specifying source IP address different to
+  // the current endpoint IP address. If false endpoint will crash if attempt
+  // to send such packet will be done.
+  bool allow_send_packet_with_different_source_ip = false;
+  // Allow endpoint to receive packet with destination IP address different to
+  // the current endpoint IP address. If false endpoint will crash if such
+  // packet will arrive.
+  bool allow_receive_packets_with_different_dest_ip = false;
+};
+
+struct EmulatedTURNServerConfig {
+  EmulatedEndpointConfig client_config;
+  EmulatedEndpointConfig peer_config;
+};
+
+// EmulatedTURNServer is an abstraction for a TURN server.
+class EmulatedTURNServerInterface {
+ public:
+  struct IceServerConfig {
+    std::string username;
+    std::string password;
+    std::string url;
+  };
+
+  virtual ~EmulatedTURNServerInterface() {}
+
+  // Get an IceServer configuration suitable to add to a PeerConnection.
+  virtual IceServerConfig GetIceServerConfig() const = 0;
+
+  // Get non-null client endpoint, an endpoint that accepts TURN allocations.
+  // This shall typically be connected to one or more webrtc endpoint.
+  virtual EmulatedEndpoint* GetClientEndpoint() const = 0;
+
+  // Returns socket address, which client should use to connect to TURN server
+  // and do TURN allocation.
+  virtual rtc::SocketAddress GetClientEndpointAddress() const = 0;
+
+  // Get non-null peer endpoint, that is "connected to the internet".
+  // This shall typically be connected to another TURN server.
+  virtual EmulatedEndpoint* GetPeerEndpoint() const = 0;
+};
+
+// Provide interface to obtain all required objects to inject network emulation
+// layer into PeerConnection. Also contains information about network interfaces
+// accessible by PeerConnection.
+class EmulatedNetworkManagerInterface {
+ public:
+  virtual ~EmulatedNetworkManagerInterface() = default;
+
+  // Returns non-null pointer to thread that have to be used as network thread
+  // for WebRTC to properly setup network emulation. Returned thread is owned
+  // by EmulatedNetworkManagerInterface implementation.
+  virtual rtc::Thread* network_thread() = 0;
+  // Returns non-null pointer to network manager that have to be injected into
+  // WebRTC to properly setup network emulation. Returned manager is owned by
+  // EmulatedNetworkManagerInterface implementation.
+  virtual rtc::NetworkManager* network_manager() = 0;
+  // Returns non-null pointer to packet socket factory that have to be injected
+  // into WebRTC to properly setup network emulation. Returned factory is owned
+  // by EmulatedNetworkManagerInterface implementation.
+  virtual rtc::PacketSocketFactory* packet_socket_factory() = 0;
+  webrtc::webrtc_pc_e2e::PeerNetworkDependencies network_dependencies() {
+    return {network_thread(), network_manager(), packet_socket_factory()};
+  }
+  // Returns list of endpoints that are associated with this instance. Pointers
+  // are guaranteed to be non-null and are owned by NetworkEmulationManager.
+  virtual std::vector<EmulatedEndpoint*> endpoints() const = 0;
+
+  // Passes summarized network stats for endpoints for this manager into
+  // specified `stats_callback`. Callback will be executed on network emulation
+  // internal task queue.
+  virtual void GetStats(
+      std::function<void(EmulatedNetworkStats)> stats_callback) const = 0;
+};
+
+enum class TimeMode { kRealTime, kSimulated };
+
+// Called implicitly when parsing an ABSL_FLAG of type TimeMode.
+// from the command line flag value `text`.
+// Returns `true` and sets `*mode` on success;
+// returns `false` and sets `*error` on failure.
+bool AbslParseFlag(absl::string_view text, TimeMode* mode, std::string* error);
+
+// AbslUnparseFlag returns a textual flag value corresponding to the TimeMode
+// `mode`.
+std::string AbslUnparseFlag(TimeMode mode);
+
+// Provides an API for creating and configuring emulated network layer.
+// All objects returned by this API are owned by NetworkEmulationManager itself
+// and will be deleted when manager will be deleted.
+class NetworkEmulationManager {
+ public:
+  // Helper struct to simplify creation of simulated network behaviors. Contains
+  // non-owning pointers as the underlying instances are owned by the manager.
+  struct SimulatedNetworkNode {
+    SimulatedNetworkInterface* simulation;
+    EmulatedNetworkNode* node;
+
+    class Builder {
+     public:
+      explicit Builder(NetworkEmulationManager* net) : net_(net) {}
+      Builder() : net_(nullptr) {}
+      Builder(const Builder&) = default;
+      // Sets the config state, note that this will replace any previously set
+      // values.
+      Builder& config(BuiltInNetworkBehaviorConfig config);
+      Builder& delay_ms(int queue_delay_ms);
+      Builder& capacity_kbps(int link_capacity_kbps);
+      Builder& capacity_Mbps(int link_capacity_Mbps);
+      Builder& loss(double loss_rate);
+      Builder& packet_queue_length(int max_queue_length_in_packets);
+      SimulatedNetworkNode Build(uint64_t random_seed = 1) const;
+      SimulatedNetworkNode Build(NetworkEmulationManager* net,
+                                 uint64_t random_seed = 1) const;
+
+     private:
+      NetworkEmulationManager* const net_;
+      BuiltInNetworkBehaviorConfig config_;
+    };
+  };
+  virtual ~NetworkEmulationManager() = default;
+
+  virtual TimeController* time_controller() = 0;
+  // Returns a mode in which underlying time controller operates.
+  virtual TimeMode time_mode() const = 0;
+
+  // Creates an emulated network node, which represents ideal network with
+  // unlimited capacity, no delay and no packet loss.
+  EmulatedNetworkNode* CreateUnconstrainedEmulatedNode() {
+    return CreateEmulatedNode(BuiltInNetworkBehaviorConfig());
+  }
+  // Creates an emulated network node, which represents single network in
+  // the emulated network layer. Uses default implementation on network behavior
+  // which can be configured with `config`. `random_seed` can be provided to
+  // alter randomization behavior.
+  virtual EmulatedNetworkNode* CreateEmulatedNode(
+      BuiltInNetworkBehaviorConfig config,
+      uint64_t random_seed = 1) = 0;
+  // Creates an emulated network node, which represents single network in
+  // the emulated network layer. `network_behavior` determines how created node
+  // will forward incoming packets to the next receiver.
+  virtual EmulatedNetworkNode* CreateEmulatedNode(
+      std::unique_ptr<NetworkBehaviorInterface> network_behavior) = 0;
+
+  virtual SimulatedNetworkNode::Builder NodeBuilder() = 0;
+
+  // Creates an emulated endpoint, which represents single network interface on
+  // the peer's device.
+  virtual EmulatedEndpoint* CreateEndpoint(EmulatedEndpointConfig config) = 0;
+  // Enable emulated endpoint to make it available for webrtc.
+  // Caller mustn't enable currently enabled endpoint.
+  virtual void EnableEndpoint(EmulatedEndpoint* endpoint) = 0;
+  // Disable emulated endpoint to make it unavailable for webrtc.
+  // Caller mustn't disable currently disabled endpoint.
+  virtual void DisableEndpoint(EmulatedEndpoint* endpoint) = 0;
+
+  // Creates a route between endpoints going through specified network nodes.
+  // This route is single direction only and describe how traffic that was
+  // sent by network interface `from` have to be delivered to the network
+  // interface `to`. Return object can be used to remove created route. The
+  // route must contains at least one network node inside it.
+  //
+  // Assume that E{0-9} are endpoints and N{0-9} are network nodes, then
+  // creation of the route have to follow these rules:
+  //   1. A route consists of a source endpoint, an ordered list of one or
+  //      more network nodes, and a destination endpoint.
+  //   2. If (E1, ..., E2) is a route, then E1 != E2.
+  //      In other words, the source and the destination may not be the same.
+  //   3. Given two simultaneously existing routes (E1, ..., E2) and
+  //      (E3, ..., E4), either E1 != E3 or E2 != E4.
+  //      In other words, there may be at most one route from any given source
+  //      endpoint to any given destination endpoint.
+  //   4. Given two simultaneously existing routes (E1, ..., N1, ..., E2)
+  //      and (E3, ..., N2, ..., E4), either N1 != N2 or E2 != E4.
+  //      In other words, a network node may not belong to two routes that lead
+  //      to the same destination endpoint.
+  virtual EmulatedRoute* CreateRoute(
+      EmulatedEndpoint* from,
+      const std::vector<EmulatedNetworkNode*>& via_nodes,
+      EmulatedEndpoint* to) = 0;
+
+  // Creates a route over the given `via_nodes` creating the required endpoints
+  // in the process. The returned EmulatedRoute pointer can be used in other
+  // calls as a transport route for message or cross traffic.
+  virtual EmulatedRoute* CreateRoute(
+      const std::vector<EmulatedNetworkNode*>& via_nodes) = 0;
+
+  // Creates a default route between endpoints going through specified network
+  // nodes. Default route is used for packet when there is no known route for
+  // packet's destination IP.
+  //
+  // This route is single direction only and describe how traffic that was
+  // sent by network interface `from` have to be delivered in case if routing
+  // was unspecified. Return object can be used to remove created route. The
+  // route must contains at least one network node inside it.
+  //
+  // Assume that E{0-9} are endpoints and N{0-9} are network nodes, then
+  // creation of the route have to follow these rules:
+  //   1. A route consists of a source endpoint, an ordered list of one or
+  //      more network nodes, and a destination endpoint.
+  //   2. If (E1, ..., E2) is a route, then E1 != E2.
+  //      In other words, the source and the destination may not be the same.
+  //   3. Given two simultaneously existing routes (E1, ..., E2) and
+  //      (E3, ..., E4), either E1 != E3 or E2 != E4.
+  //      In other words, there may be at most one route from any given source
+  //      endpoint to any given destination endpoint.
+  //   4. Given two simultaneously existing routes (E1, ..., N1, ..., E2)
+  //      and (E3, ..., N2, ..., E4), either N1 != N2 or E2 != E4.
+  //      In other words, a network node may not belong to two routes that lead
+  //      to the same destination endpoint.
+  //   5. Any node N can belong to only one default route.
+  virtual EmulatedRoute* CreateDefaultRoute(
+      EmulatedEndpoint* from,
+      const std::vector<EmulatedNetworkNode*>& via_nodes,
+      EmulatedEndpoint* to) = 0;
+
+  // Removes route previously created by CreateRoute(...).
+  // Caller mustn't call this function with route, that have been already
+  // removed earlier. Removing a route that is currently in use will lead to
+  // packets being dropped.
+  virtual void ClearRoute(EmulatedRoute* route) = 0;
+
+  // Creates a simulated TCP connection using `send_route` for traffic and
+  // `ret_route` for feedback. This can be used to emulate HTTP cross traffic
+  // and to implement realistic reliable signaling over lossy networks.
+  // TODO(srte): Handle clearing of the routes involved.
+  virtual TcpMessageRoute* CreateTcpRoute(EmulatedRoute* send_route,
+                                          EmulatedRoute* ret_route) = 0;
+
+  // Creates a route over the given `via_nodes`. Returns an object that can be
+  // used to emulate network load with cross traffic over the created route.
+  virtual CrossTrafficRoute* CreateCrossTrafficRoute(
+      const std::vector<EmulatedNetworkNode*>& via_nodes) = 0;
+
+  // Starts generating cross traffic using given `generator`. Takes ownership
+  // over the generator.
+  virtual CrossTrafficGenerator* StartCrossTraffic(
+      std::unique_ptr<CrossTrafficGenerator> generator) = 0;
+
+  // Stops generating cross traffic that was started using given `generator`.
+  // The `generator` shouldn't be used after and the reference may be invalid.
+  virtual void StopCrossTraffic(CrossTrafficGenerator* generator) = 0;
+
+  // Creates EmulatedNetworkManagerInterface which can be used then to inject
+  // network emulation layer into PeerConnection. `endpoints` - are available
+  // network interfaces for PeerConnection. If endpoint is enabled, it will be
+  // immediately available for PeerConnection, otherwise user will be able to
+  // enable endpoint later to make it available for PeerConnection.
+  virtual EmulatedNetworkManagerInterface*
+  CreateEmulatedNetworkManagerInterface(
+      const std::vector<EmulatedEndpoint*>& endpoints) = 0;
+
+  // Passes combined network stats for all specified `endpoints` into specified
+  // `stats_callback`. Callback will be executed on network emulation
+  // internal task queue.
+  virtual void GetStats(
+      rtc::ArrayView<EmulatedEndpoint* const> endpoints,
+      std::function<void(EmulatedNetworkStats)> stats_callback) = 0;
+
+  // Passes combined network stats for all specified `nodes` into specified
+  // `stats_callback`. Callback will be executed on network emulation
+  // internal task queue.
+  virtual void GetStats(
+      rtc::ArrayView<EmulatedNetworkNode* const> nodes,
+      std::function<void(EmulatedNetworkNodeStats)> stats_callback) = 0;
+
+  // Create a EmulatedTURNServer.
+  // The TURN server has 2 endpoints that need to be connected with routes,
+  // - GetClientEndpoint() - the endpoint that accepts TURN allocations.
+  // - GetPeerEndpoint() - the endpoint that is "connected to the internet".
+  virtual EmulatedTURNServerInterface* CreateTURNServer(
+      EmulatedTURNServerConfig config) = 0;
+
+  // Create a pair of EmulatedNetworkManagerInterfaces connected to each other.
+  std::pair<EmulatedNetworkManagerInterface*, EmulatedNetworkManagerInterface*>
+  CreateEndpointPairWithTwoWayRoutes(
+      const BuiltInNetworkBehaviorConfig& config);
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_NETWORK_EMULATION_MANAGER_H_
diff --git a/third_party/libwebrtc/api/test/pclf/BUILD.gn b/third_party/libwebrtc/api/test/pclf/BUILD.gn
new file mode 100644
index 0000000000..0526478e8b
--- /dev/null
+++ b/third_party/libwebrtc/api/test/pclf/BUILD.gn
@@ -0,0 +1,114 @@
+# 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.
+
+import("../../../webrtc.gni")
+
+rtc_source_set("media_configuration") {
+  visibility = [ "*" ]
+  testonly = true
+  sources = [
+    "media_configuration.cc",
+    "media_configuration.h",
+  ]
+
+  deps = [
+    "../..:array_view",
+    "../..:audio_options_api",
+    "../..:audio_quality_analyzer_api",
+    "../..:callfactory_api",
+    "../..:fec_controller_api",
+    "../..:frame_generator_api",
+    "../..:function_view",
+    "../..:libjingle_peerconnection_api",
+    "../..:media_stream_interface",
+    "../..:packet_socket_factory",
+    "../..:peer_network_dependencies",
+    "../..:rtp_parameters",
+    "../..:simulated_network_api",
+    "../..:stats_observer_interface",
+    "../..:track_id_stream_info_map",
+    "../..:video_quality_analyzer_api",
+    "../../../modules/audio_processing:api",
+    "../../../rtc_base:checks",
+    "../../../rtc_base:network",
+    "../../../rtc_base:rtc_certificate_generator",
+    "../../../rtc_base:ssl",
+    "../../../rtc_base:stringutils",
+    "../../../rtc_base:threading",
+    "../../../test:fileutils",
+    "../../../test:video_test_support",
+    "../../../test/pc/e2e/analyzer/video:video_dumping",
+    "../../audio:audio_mixer_api",
+    "../../rtc_event_log",
+    "../../task_queue",
+    "../../transport:network_control",
+    "../../units:time_delta",
+    "../../video_codecs:video_codecs_api",
+    "../video:video_frame_writer",
+  ]
+  absl_deps = [
+    "//third_party/abseil-cpp/absl/memory",
+    "//third_party/abseil-cpp/absl/strings",
+    "//third_party/abseil-cpp/absl/types:optional",
+  ]
+}
+
+rtc_library("media_quality_test_params") {
+  visibility = [ "*" ]
+  testonly = true
+  sources = [ "media_quality_test_params.h" ]
+
+  deps = [
+    ":media_configuration",
+    "../../../api:callfactory_api",
+    "../../../api:fec_controller_api",
+    "../../../api:field_trials_view",
+    "../../../api:libjingle_peerconnection_api",
+    "../../../api:packet_socket_factory",
+    "../../../api/audio:audio_mixer_api",
+    "../../../api/rtc_event_log",
+    "../../../api/task_queue",
+    "../../../api/transport:network_control",
+    "../../../api/video_codecs:video_codecs_api",
+    "../../../modules/audio_processing:api",
+    "../../../p2p:rtc_p2p",
+    "../../../rtc_base:network",
+    "../../../rtc_base:rtc_certificate_generator",
+    "../../../rtc_base:ssl",
+    "../../../rtc_base:threading",
+  ]
+}
+
+rtc_library("peer_configurer") {
+  visibility = [ "*" ]
+  testonly = true
+  sources = [
+    "peer_configurer.cc",
+    "peer_configurer.h",
+  ]
+  deps = [
+    ":media_configuration",
+    ":media_quality_test_params",
+    "../../../api:callfactory_api",
+    "../../../api:create_peer_connection_quality_test_frame_generator",
+    "../../../api:fec_controller_api",
+    "../../../api:packet_socket_factory",
+    "../../../api:peer_network_dependencies",
+    "../../../api/audio:audio_mixer_api",
+    "../../../api/rtc_event_log",
+    "../../../api/task_queue",
+    "../../../api/transport:network_control",
+    "../../../api/video_codecs:video_codecs_api",
+    "../../../modules/audio_processing:api",
+    "../../../rtc_base:network",
+    "../../../rtc_base:rtc_certificate_generator",
+    "../../../rtc_base:ssl",
+    "../../../rtc_base:threading",
+  ]
+  absl_deps = [ "//third_party/abseil-cpp/absl/strings" ]
+}
diff --git a/third_party/libwebrtc/api/test/pclf/DEPS b/third_party/libwebrtc/api/test/pclf/DEPS
new file mode 100644
index 0000000000..60cc0aeeb3
--- /dev/null
+++ b/third_party/libwebrtc/api/test/pclf/DEPS
@@ -0,0 +1,13 @@
+specific_include_rules = {
+  ".*": [
+    "+modules/audio_processing/include/audio_processing.h",
+    "+rtc_base/checks.h",
+    "+rtc_base/network.h",
+    "+rtc_base/rtc_certificate_generator.h",
+    "+rtc_base/ssl_certificate.h",
+    "+rtc_base/thread.h",
+  ],
+  "media_quality_test_params\.h": [
+    "+p2p/base/port_allocator.h",
+  ],
+}
diff --git a/third_party/libwebrtc/api/test/pclf/media_configuration.cc b/third_party/libwebrtc/api/test/pclf/media_configuration.cc
new file mode 100644
index 0000000000..56b9e52e01
--- /dev/null
+++ b/third_party/libwebrtc/api/test/pclf/media_configuration.cc
@@ -0,0 +1,314 @@
+/*
+ *  Copyright 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.
+ */
+
+#include "api/test/pclf/media_configuration.h"
+
+#include <string>
+#include <utility>
+
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "api/test/video/video_frame_writer.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/strings/string_builder.h"
+#include "test/pc/e2e/analyzer/video/video_dumping.h"
+#include "test/testsupport/file_utils.h"
+#include "test/testsupport/video_frame_writer.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+namespace {
+
+std::string SpecToString(VideoResolution::Spec spec) {
+  switch (spec) {
+    case VideoResolution::Spec::kNone:
+      return "None";
+    case VideoResolution::Spec::kMaxFromSender:
+      return "MaxFromSender";
+  }
+}
+
+void AppendResolution(const VideoResolution& resolution,
+                      rtc::StringBuilder& builder) {
+  builder << "_" << resolution.width() << "x" << resolution.height() << "_"
+          << resolution.fps();
+}
+
+}  // namespace
+
+ScreenShareConfig::ScreenShareConfig(TimeDelta slide_change_interval)
+    : slide_change_interval(slide_change_interval) {
+  RTC_CHECK_GT(slide_change_interval.ms(), 0);
+}
+VideoSimulcastConfig::VideoSimulcastConfig(int simulcast_streams_count)
+    : simulcast_streams_count(simulcast_streams_count) {
+  RTC_CHECK_GT(simulcast_streams_count, 1);
+}
+EmulatedSFUConfig::EmulatedSFUConfig(int target_layer_index)
+    : target_layer_index(target_layer_index) {
+  RTC_CHECK_GE(target_layer_index, 0);
+}
+
+EmulatedSFUConfig::EmulatedSFUConfig(absl::optional<int> target_layer_index,
+                                     absl::optional<int> target_temporal_index)
+    : target_layer_index(target_layer_index),
+      target_temporal_index(target_temporal_index) {
+  RTC_CHECK_GE(target_temporal_index.value_or(0), 0);
+  if (target_temporal_index)
+    RTC_CHECK_GE(*target_temporal_index, 0);
+}
+
+VideoResolution::VideoResolution(size_t width, size_t height, int32_t fps)
+    : width_(width), height_(height), fps_(fps), spec_(Spec::kNone) {}
+VideoResolution::VideoResolution(Spec spec)
+    : width_(0), height_(0), fps_(0), spec_(spec) {}
+
+bool VideoResolution::operator==(const VideoResolution& other) const {
+  if (spec_ != Spec::kNone && spec_ == other.spec_) {
+    // If there is some particular spec set, then it doesn't matter what
+    // values we have in other fields.
+    return true;
+  }
+  return width_ == other.width_ && height_ == other.height_ &&
+         fps_ == other.fps_ && spec_ == other.spec_;
+}
+bool VideoResolution::operator!=(const VideoResolution& other) const {
+  return !(*this == other);
+}
+
+bool VideoResolution::IsRegular() const {
+  return spec_ == Spec::kNone;
+}
+std::string VideoResolution::ToString() const {
+  rtc::StringBuilder out;
+  out << "{ width=" << width_ << ", height=" << height_ << ", fps=" << fps_
+      << ", spec=" << SpecToString(spec_) << " }";
+  return out.Release();
+}
+
+VideoDumpOptions::VideoDumpOptions(
+    absl::string_view output_directory,
+    int sampling_modulo,
+    bool export_frame_ids,
+    std::function<std::unique_ptr<test::VideoFrameWriter>(
+        absl::string_view file_name_prefix,
+        const VideoResolution& resolution)> video_frame_writer_factory)
+    : output_directory_(output_directory),
+      sampling_modulo_(sampling_modulo),
+      export_frame_ids_(export_frame_ids),
+      video_frame_writer_factory_(video_frame_writer_factory) {
+  RTC_CHECK_GT(sampling_modulo, 0);
+}
+
+VideoDumpOptions::VideoDumpOptions(absl::string_view output_directory,
+                                   bool export_frame_ids)
+    : VideoDumpOptions(output_directory,
+                       kDefaultSamplingModulo,
+                       export_frame_ids) {}
+
+std::unique_ptr<test::VideoFrameWriter>
+VideoDumpOptions::CreateInputDumpVideoFrameWriter(
+    absl::string_view stream_label,
+    const VideoResolution& resolution) const {
+  std::unique_ptr<test::VideoFrameWriter> writer = video_frame_writer_factory_(
+      GetInputDumpFileName(stream_label, resolution), resolution);
+  absl::optional<std::string> frame_ids_file =
+      GetInputFrameIdsDumpFileName(stream_label, resolution);
+  if (frame_ids_file.has_value()) {
+    writer = CreateVideoFrameWithIdsWriter(std::move(writer), *frame_ids_file);
+  }
+  return writer;
+}
+
+std::unique_ptr<test::VideoFrameWriter>
+VideoDumpOptions::CreateOutputDumpVideoFrameWriter(
+    absl::string_view stream_label,
+    absl::string_view receiver,
+    const VideoResolution& resolution) const {
+  std::unique_ptr<test::VideoFrameWriter> writer = video_frame_writer_factory_(
+      GetOutputDumpFileName(stream_label, receiver, resolution), resolution);
+  absl::optional<std::string> frame_ids_file =
+      GetOutputFrameIdsDumpFileName(stream_label, receiver, resolution);
+  if (frame_ids_file.has_value()) {
+    writer = CreateVideoFrameWithIdsWriter(std::move(writer), *frame_ids_file);
+  }
+  return writer;
+}
+
+std::unique_ptr<test::VideoFrameWriter>
+VideoDumpOptions::Y4mVideoFrameWriterFactory(
+    absl::string_view file_name_prefix,
+    const VideoResolution& resolution) {
+  return std::make_unique<test::Y4mVideoFrameWriterImpl>(
+      std::string(file_name_prefix) + ".y4m", resolution.width(),
+      resolution.height(), resolution.fps());
+}
+
+std::string VideoDumpOptions::GetInputDumpFileName(
+    absl::string_view stream_label,
+    const VideoResolution& resolution) const {
+  rtc::StringBuilder file_name;
+  file_name << stream_label;
+  AppendResolution(resolution, file_name);
+  return test::JoinFilename(output_directory_, file_name.Release());
+}
+
+absl::optional<std::string> VideoDumpOptions::GetInputFrameIdsDumpFileName(
+    absl::string_view stream_label,
+    const VideoResolution& resolution) const {
+  if (!export_frame_ids_) {
+    return absl::nullopt;
+  }
+  return GetInputDumpFileName(stream_label, resolution) + ".frame_ids.txt";
+}
+
+std::string VideoDumpOptions::GetOutputDumpFileName(
+    absl::string_view stream_label,
+    absl::string_view receiver,
+    const VideoResolution& resolution) const {
+  rtc::StringBuilder file_name;
+  file_name << stream_label << "_" << receiver;
+  AppendResolution(resolution, file_name);
+  return test::JoinFilename(output_directory_, file_name.Release());
+}
+
+absl::optional<std::string> VideoDumpOptions::GetOutputFrameIdsDumpFileName(
+    absl::string_view stream_label,
+    absl::string_view receiver,
+    const VideoResolution& resolution) const {
+  if (!export_frame_ids_) {
+    return absl::nullopt;
+  }
+  return GetOutputDumpFileName(stream_label, receiver, resolution) +
+         ".frame_ids.txt";
+}
+
+std::string VideoDumpOptions::ToString() const {
+  rtc::StringBuilder out;
+  out << "{ output_directory_=" << output_directory_
+      << ", sampling_modulo_=" << sampling_modulo_
+      << ", export_frame_ids_=" << export_frame_ids_ << " }";
+  return out.Release();
+}
+
+VideoConfig::VideoConfig(const VideoResolution& resolution)
+    : width(resolution.width()),
+      height(resolution.height()),
+      fps(resolution.fps()) {
+  RTC_CHECK(resolution.IsRegular());
+}
+VideoConfig::VideoConfig(size_t width, size_t height, int32_t fps)
+    : width(width), height(height), fps(fps) {}
+VideoConfig::VideoConfig(std::string stream_label,
+                         size_t width,
+                         size_t height,
+                         int32_t fps)
+    : width(width),
+      height(height),
+      fps(fps),
+      stream_label(std::move(stream_label)) {}
+
+AudioConfig::AudioConfig(std::string stream_label)
+    : stream_label(std::move(stream_label)) {}
+
+VideoCodecConfig::VideoCodecConfig(std::string name)
+    : name(std::move(name)), required_params() {}
+VideoCodecConfig::VideoCodecConfig(
+    std::string name,
+    std::map<std::string, std::string> required_params)
+    : name(std::move(name)), required_params(std::move(required_params)) {}
+
+absl::optional<VideoResolution> VideoSubscription::GetMaxResolution(
+    rtc::ArrayView<const VideoConfig> video_configs) {
+  std::vector<VideoResolution> resolutions;
+  for (const auto& video_config : video_configs) {
+    resolutions.push_back(video_config.GetResolution());
+  }
+  return GetMaxResolution(resolutions);
+}
+
+absl::optional<VideoResolution> VideoSubscription::GetMaxResolution(
+    rtc::ArrayView<const VideoResolution> resolutions) {
+  if (resolutions.empty()) {
+    return absl::nullopt;
+  }
+
+  VideoResolution max_resolution;
+  for (const VideoResolution& resolution : resolutions) {
+    if (max_resolution.width() < resolution.width()) {
+      max_resolution.set_width(resolution.width());
+    }
+    if (max_resolution.height() < resolution.height()) {
+      max_resolution.set_height(resolution.height());
+    }
+    if (max_resolution.fps() < resolution.fps()) {
+      max_resolution.set_fps(resolution.fps());
+    }
+  }
+  return max_resolution;
+}
+
+bool VideoSubscription::operator==(const VideoSubscription& other) const {
+  return default_resolution_ == other.default_resolution_ &&
+         peers_resolution_ == other.peers_resolution_;
+}
+bool VideoSubscription::operator!=(const VideoSubscription& other) const {
+  return !(*this == other);
+}
+
+VideoSubscription& VideoSubscription::SubscribeToPeer(
+    absl::string_view peer_name,
+    VideoResolution resolution) {
+  peers_resolution_[std::string(peer_name)] = resolution;
+  return *this;
+}
+
+VideoSubscription& VideoSubscription::SubscribeToAllPeers(
+    VideoResolution resolution) {
+  default_resolution_ = resolution;
+  return *this;
+}
+
+absl::optional<VideoResolution> VideoSubscription::GetResolutionForPeer(
+    absl::string_view peer_name) const {
+  auto it = peers_resolution_.find(std::string(peer_name));
+  if (it == peers_resolution_.end()) {
+    return default_resolution_;
+  }
+  return it->second;
+}
+
+std::vector<std::string> VideoSubscription::GetSubscribedPeers() const {
+  std::vector<std::string> subscribed_streams;
+  subscribed_streams.reserve(peers_resolution_.size());
+  for (const auto& entry : peers_resolution_) {
+    subscribed_streams.push_back(entry.first);
+  }
+  return subscribed_streams;
+}
+
+std::string VideoSubscription::ToString() const {
+  rtc::StringBuilder out;
+  out << "{ default_resolution_=[";
+  if (default_resolution_.has_value()) {
+    out << default_resolution_->ToString();
+  } else {
+    out << "undefined";
+  }
+  out << "], {";
+  for (const auto& [peer_name, resolution] : peers_resolution_) {
+    out << "[" << peer_name << ": " << resolution.ToString() << "], ";
+  }
+  out << "} }";
+  return out.Release();
+}
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/pclf/media_configuration.h b/third_party/libwebrtc/api/test/pclf/media_configuration.h
new file mode 100644
index 0000000000..8e841a265b
--- /dev/null
+++ b/third_party/libwebrtc/api/test/pclf/media_configuration.h
@@ -0,0 +1,484 @@
+/*
+ *  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 API_TEST_PCLF_MEDIA_CONFIGURATION_H_
+#define API_TEST_PCLF_MEDIA_CONFIGURATION_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <functional>
+#include <map>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/memory/memory.h"
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "api/async_resolver_factory.h"
+#include "api/audio/audio_mixer.h"
+#include "api/audio_options.h"
+#include "api/call/call_factory_interface.h"
+#include "api/fec_controller.h"
+#include "api/function_view.h"
+#include "api/media_stream_interface.h"
+#include "api/peer_connection_interface.h"
+#include "api/rtc_event_log/rtc_event_log_factory_interface.h"
+#include "api/rtp_parameters.h"
+#include "api/task_queue/task_queue_factory.h"
+#include "api/test/audio_quality_analyzer_interface.h"
+#include "api/test/frame_generator_interface.h"
+#include "api/test/peer_network_dependencies.h"
+#include "api/test/simulated_network.h"
+#include "api/test/stats_observer_interface.h"
+#include "api/test/track_id_stream_info_map.h"
+#include "api/test/video/video_frame_writer.h"
+#include "api/test/video_quality_analyzer_interface.h"
+#include "api/transport/network_control.h"
+#include "api/units/time_delta.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "api/video_codecs/video_encoder.h"
+#include "api/video_codecs/video_encoder_factory.h"
+#include "modules/audio_processing/include/audio_processing.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/network.h"
+#include "rtc_base/rtc_certificate_generator.h"
+#include "rtc_base/ssl_certificate.h"
+#include "rtc_base/thread.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+constexpr size_t kDefaultSlidesWidth = 1850;
+constexpr size_t kDefaultSlidesHeight = 1110;
+
+// The index of required capturing device in OS provided list of video
+// devices. On Linux and Windows the list will be obtained via
+// webrtc::VideoCaptureModule::DeviceInfo, on Mac OS via
+// [RTCCameraVideoCapturer captureDevices].
+enum class CapturingDeviceIndex : size_t {};
+
+// Contains parameters for screen share scrolling.
+//
+// If scrolling is enabled, then it will be done by putting sliding window
+// on source video and moving this window from top left corner to the
+// bottom right corner of the picture.
+//
+// In such case source dimensions must be greater or equal to the sliding
+// window dimensions. So `source_width` and `source_height` are the dimensions
+// of the source frame, while `VideoConfig::width` and `VideoConfig::height`
+// are the dimensions of the sliding window.
+//
+// Because `source_width` and `source_height` are dimensions of the source
+// frame, they have to be width and height of videos from
+// `ScreenShareConfig::slides_yuv_file_names`.
+//
+// Because scrolling have to be done on single slide it also requires, that
+// `duration` must be less or equal to
+// `ScreenShareConfig::slide_change_interval`.
+struct ScrollingParams {
+  // Duration of scrolling.
+  TimeDelta duration;
+  // Width of source slides video.
+  size_t source_width = kDefaultSlidesWidth;
+  // Height of source slides video.
+  size_t source_height = kDefaultSlidesHeight;
+};
+
+// Contains screen share video stream properties.
+struct ScreenShareConfig {
+  explicit ScreenShareConfig(TimeDelta slide_change_interval);
+
+  // Shows how long one slide should be presented on the screen during
+  // slide generation.
+  TimeDelta slide_change_interval;
+  // If true, slides will be generated programmatically. No scrolling params
+  // will be applied in such case.
+  bool generate_slides = false;
+  // If present scrolling will be applied. Please read extra requirement on
+  // `slides_yuv_file_names` for scrolling.
+  absl::optional<ScrollingParams> scrolling_params;
+  // Contains list of yuv files with slides.
+  //
+  // If empty, default set of slides will be used. In such case
+  // `VideoConfig::width` must be equal to `kDefaultSlidesWidth` and
+  // `VideoConfig::height` must be equal to `kDefaultSlidesHeight` or if
+  // `scrolling_params` are specified, then `ScrollingParams::source_width`
+  // must be equal to `kDefaultSlidesWidth` and
+  // `ScrollingParams::source_height` must be equal to `kDefaultSlidesHeight`.
+  std::vector<std::string> slides_yuv_file_names;
+};
+
+// Config for Vp8 simulcast or non-standard Vp9 SVC testing.
+//
+// To configure standard SVC setting, use `scalability_mode` in the
+// `encoding_params` array.
+// This configures Vp9 SVC by requesting simulcast layers, the request is
+// internally converted to a request for SVC layers.
+//
+// SVC support is limited:
+// During SVC testing there is no SFU, so framework will try to emulate SFU
+// behavior in regular p2p call. Because of it there are such limitations:
+//  * if `target_spatial_index` is not equal to the highest spatial layer
+//    then no packet/frame drops are allowed.
+//
+//    If there will be any drops, that will affect requested layer, then
+//    WebRTC SVC implementation will continue decoding only the highest
+//    available layer and won't restore lower layers, so analyzer won't
+//    receive required data which will cause wrong results or test failures.
+struct VideoSimulcastConfig {
+  explicit VideoSimulcastConfig(int simulcast_streams_count);
+
+  // Specified amount of simulcast streams/SVC layers, depending on which
+  // encoder is used.
+  int simulcast_streams_count;
+};
+
+// Configuration for the emulated Selective Forward Unit (SFU)
+//
+// The framework can optionally filter out frames that are decoded
+// using an emulated SFU.
+// When using simulcast or SVC, it's not always desirable to receive
+// all frames. In a real world call, a SFU will only forward a subset
+// of the frames.
+// The emulated SFU is not able to change its configuration dynamically,
+// if adaptation happens during the call, layers may be dropped and the
+// analyzer won't receive the required data which will cause wrong results or
+// test failures.
+struct EmulatedSFUConfig {
+  EmulatedSFUConfig() = default;
+  explicit EmulatedSFUConfig(int target_layer_index);
+  EmulatedSFUConfig(absl::optional<int> target_layer_index,
+                    absl::optional<int> target_temporal_index);
+
+  // Specifies simulcast or spatial index of the video stream to analyze.
+  // There are 2 cases:
+  // 1. simulcast encoding is used:
+  //    in such case `target_layer_index` will specify the index of
+  //    simulcast stream, that should be analyzed. Other streams will be
+  //    dropped.
+  // 2. SVC encoding is used:
+  //    in such case `target_layer_index` will specify the top interesting
+  //    spatial layer and all layers below, including target one will be
+  //    processed. All layers above target one will be dropped.
+  // If not specified then all streams will be received and analyzed.
+  // When set, it instructs the framework to create an emulated Selective
+  // Forwarding Unit (SFU) that will propagate only the requested layers.
+  absl::optional<int> target_layer_index;
+  // Specifies the index of the maximum temporal unit to keep.
+  // If not specified then all temporal layers will be received and analyzed.
+  // When set, it instructs the framework to create an emulated Selective
+  // Forwarding Unit (SFU) that will propagate only up to the requested layer.
+  absl::optional<int> target_temporal_index;
+};
+
+class VideoResolution {
+ public:
+  // Determines special resolutions, which can't be expressed in terms of
+  // width, height and fps.
+  enum class Spec {
+    // No extra spec set. It describes a regular resolution described by
+    // width, height and fps.
+    kNone,
+    // Describes resolution which contains max value among all sender's
+    // video streams in each dimension (width, height, fps).
+    kMaxFromSender
+  };
+
+  VideoResolution(size_t width, size_t height, int32_t fps);
+  explicit VideoResolution(Spec spec = Spec::kNone);
+
+  bool operator==(const VideoResolution& other) const;
+  bool operator!=(const VideoResolution& other) const;
+
+  size_t width() const { return width_; }
+  void set_width(size_t width) { width_ = width; }
+  size_t height() const { return height_; }
+  void set_height(size_t height) { height_ = height; }
+  int32_t fps() const { return fps_; }
+  void set_fps(int32_t fps) { fps_ = fps; }
+
+  // Returns if it is a regular resolution or not. The resolution is regular
+  // if it's spec is `Spec::kNone`.
+  bool IsRegular() const;
+
+  std::string ToString() const;
+
+ private:
+  size_t width_ = 0;
+  size_t height_ = 0;
+  int32_t fps_ = 0;
+  Spec spec_ = Spec::kNone;
+};
+
+class VideoDumpOptions {
+ public:
+  static constexpr int kDefaultSamplingModulo = 1;
+
+  // output_directory - the output directory where stream will be dumped. The
+  // output files' names will be constructed as
+  // <stream_name>_<receiver_name>_<resolution>.<extension> for output dumps
+  // and <stream_name>_<resolution>.<extension> for input dumps.
+  // By default <extension> is "y4m". Resolution is in the format
+  // <width>x<height>_<fps>.
+  // sampling_modulo - the module for the video frames to be dumped. Modulo
+  // equals X means every Xth frame will be written to the dump file. The
+  // value must be greater than 0. (Default: 1)
+  // export_frame_ids - specifies if frame ids should be exported together
+  // with content of the stream. If true, an output file with the same name as
+  // video dump and suffix ".frame_ids.txt" will be created. It will contain
+  // the frame ids in the same order as original frames in the output
+  // file with stream content. File will contain one frame id per line.
+  // (Default: false)
+  // `video_frame_writer_factory` - factory function to create a video frame
+  // writer for input and output video files. (Default: Y4M video writer
+  // factory).
+  explicit VideoDumpOptions(
+      absl::string_view output_directory,
+      int sampling_modulo = kDefaultSamplingModulo,
+      bool export_frame_ids = false,
+      std::function<std::unique_ptr<test::VideoFrameWriter>(
+          absl::string_view file_name_prefix,
+          const VideoResolution& resolution)> video_frame_writer_factory =
+          Y4mVideoFrameWriterFactory);
+  VideoDumpOptions(absl::string_view output_directory, bool export_frame_ids);
+
+  VideoDumpOptions(const VideoDumpOptions&) = default;
+  VideoDumpOptions& operator=(const VideoDumpOptions&) = default;
+  VideoDumpOptions(VideoDumpOptions&&) = default;
+  VideoDumpOptions& operator=(VideoDumpOptions&&) = default;
+
+  std::string output_directory() const { return output_directory_; }
+  int sampling_modulo() const { return sampling_modulo_; }
+  bool export_frame_ids() const { return export_frame_ids_; }
+
+  std::unique_ptr<test::VideoFrameWriter> CreateInputDumpVideoFrameWriter(
+      absl::string_view stream_label,
+      const VideoResolution& resolution) const;
+
+  std::unique_ptr<test::VideoFrameWriter> CreateOutputDumpVideoFrameWriter(
+      absl::string_view stream_label,
+      absl::string_view receiver,
+      const VideoResolution& resolution) const;
+
+  std::string ToString() const;
+
+ private:
+  static std::unique_ptr<test::VideoFrameWriter> Y4mVideoFrameWriterFactory(
+      absl::string_view file_name_prefix,
+      const VideoResolution& resolution);
+  std::string GetInputDumpFileName(absl::string_view stream_label,
+                                   const VideoResolution& resolution) const;
+  // Returns file name for input frame ids dump if `export_frame_ids()` is
+  // true, absl::nullopt otherwise.
+  absl::optional<std::string> GetInputFrameIdsDumpFileName(
+      absl::string_view stream_label,
+      const VideoResolution& resolution) const;
+  std::string GetOutputDumpFileName(absl::string_view stream_label,
+                                    absl::string_view receiver,
+                                    const VideoResolution& resolution) const;
+  // Returns file name for output frame ids dump if `export_frame_ids()` is
+  // true, absl::nullopt otherwise.
+  absl::optional<std::string> GetOutputFrameIdsDumpFileName(
+      absl::string_view stream_label,
+      absl::string_view receiver,
+      const VideoResolution& resolution) const;
+
+  std::string output_directory_;
+  int sampling_modulo_ = 1;
+  bool export_frame_ids_ = false;
+  std::function<std::unique_ptr<test::VideoFrameWriter>(
+      absl::string_view file_name_prefix,
+      const VideoResolution& resolution)>
+      video_frame_writer_factory_;
+};
+
+// Contains properties of single video stream.
+struct VideoConfig {
+  explicit VideoConfig(const VideoResolution& resolution);
+  VideoConfig(size_t width, size_t height, int32_t fps);
+  VideoConfig(std::string stream_label,
+              size_t width,
+              size_t height,
+              int32_t fps);
+
+  // Video stream width.
+  size_t width;
+  // Video stream height.
+  size_t height;
+  int32_t fps;
+  VideoResolution GetResolution() const {
+    return VideoResolution(width, height, fps);
+  }
+
+  // Have to be unique among all specified configs for all peers in the call.
+  // Will be auto generated if omitted.
+  absl::optional<std::string> stream_label;
+  // Will be set for current video track. If equals to kText or kDetailed -
+  // screencast in on.
+  absl::optional<VideoTrackInterface::ContentHint> content_hint;
+  // If presented video will be transfered in simulcast/SVC mode depending on
+  // which encoder is used.
+  //
+  // Simulcast is supported only from 1st added peer. For VP8 simulcast only
+  // without RTX is supported so it will be automatically disabled for all
+  // simulcast tracks. For VP9 simulcast enables VP9 SVC mode and support RTX,
+  // but only on non-lossy networks. See more in documentation to
+  // VideoSimulcastConfig.
+  absl::optional<VideoSimulcastConfig> simulcast_config;
+  // Configuration for the emulated Selective Forward Unit (SFU).
+  absl::optional<EmulatedSFUConfig> emulated_sfu_config;
+  // Encoding parameters for both singlecast and per simulcast layer.
+  // If singlecast is used, if not empty, a single value can be provided.
+  // If simulcast is used, if not empty, `encoding_params` size have to be
+  // equal to `simulcast_config.simulcast_streams_count`. Will be used to set
+  // transceiver send encoding params for each layer.
+  // RtpEncodingParameters::rid may be changed by fixture implementation to
+  // ensure signaling correctness.
+  std::vector<RtpEncodingParameters> encoding_params;
+  // Count of temporal layers for video stream. This value will be set into
+  // each RtpEncodingParameters of RtpParameters of corresponding
+  // RtpSenderInterface for this video stream.
+  absl::optional<int> temporal_layers_count;
+  // If specified defines how input should be dumped. It is actually one of
+  // the test's output file, which contains copy of what was captured during
+  // the test for this video stream on sender side. It is useful when
+  // generator is used as input.
+  absl::optional<VideoDumpOptions> input_dump_options;
+  // If specified defines how output should be dumped on the receiver side for
+  // this stream. The produced files contain what was rendered for this video
+  // stream on receiver side per each receiver.
+  absl::optional<VideoDumpOptions> output_dump_options;
+  // If set to true uses fixed frame rate while dumping output video to the
+  // file. Requested `VideoSubscription::fps()` will be used as frame rate.
+  bool output_dump_use_fixed_framerate = false;
+  // If true will display input and output video on the user's screen.
+  bool show_on_screen = false;
+  // If specified, determines a sync group to which this video stream belongs.
+  // According to bugs.webrtc.org/4762 WebRTC supports synchronization only
+  // for pair of single audio and single video stream.
+  absl::optional<std::string> sync_group;
+  // If specified, it will be set into RtpParameters of corresponding
+  // RtpSenderInterface for this video stream.
+  // Note that this setting takes precedence over `content_hint`.
+  absl::optional<DegradationPreference> degradation_preference;
+};
+
+// Contains properties for audio in the call.
+struct AudioConfig {
+  enum Mode {
+    kGenerated,
+    kFile,
+  };
+
+  AudioConfig() = default;
+  explicit AudioConfig(std::string stream_label);
+
+  // Have to be unique among all specified configs for all peers in the call.
+  // Will be auto generated if omitted.
+  absl::optional<std::string> stream_label;
+  Mode mode = kGenerated;
+  // Have to be specified only if mode = kFile
+  absl::optional<std::string> input_file_name;
+  // If specified the input stream will be also copied to specified file.
+  absl::optional<std::string> input_dump_file_name;
+  // If specified the output stream will be copied to specified file.
+  absl::optional<std::string> output_dump_file_name;
+
+  // Audio options to use.
+  cricket::AudioOptions audio_options;
+  // Sampling frequency of input audio data (from file or generated).
+  int sampling_frequency_in_hz = 48000;
+  // If specified, determines a sync group to which this audio stream belongs.
+  // According to bugs.webrtc.org/4762 WebRTC supports synchronization only
+  // for pair of single audio and single video stream.
+  absl::optional<std::string> sync_group;
+};
+
+struct VideoCodecConfig {
+  explicit VideoCodecConfig(std::string name);
+  VideoCodecConfig(std::string name,
+                   std::map<std::string, std::string> required_params);
+  // Next two fields are used to specify concrete video codec, that should be
+  // used in the test. Video code will be negotiated in SDP during offer/
+  // answer exchange.
+  // Video codec name. You can find valid names in
+  // media/base/media_constants.h
+  std::string name;
+  // Map of parameters, that have to be specified on SDP codec. Each parameter
+  // is described by key and value. Codec parameters will match the specified
+  // map if and only if for each key from `required_params` there will be
+  // a parameter with name equal to this key and parameter value will be equal
+  // to the value from `required_params` for this key.
+  // If empty then only name will be used to match the codec.
+  std::map<std::string, std::string> required_params;
+};
+
+// Subscription to the remote video streams. It declares which remote stream
+// peer should receive and in which resolution (width x height x fps).
+class VideoSubscription {
+ public:
+  // Returns the resolution constructed as maximum from all resolution
+  // dimensions: width, height and fps.
+  static absl::optional<VideoResolution> GetMaxResolution(
+      rtc::ArrayView<const VideoConfig> video_configs);
+  static absl::optional<VideoResolution> GetMaxResolution(
+      rtc::ArrayView<const VideoResolution> resolutions);
+
+  bool operator==(const VideoSubscription& other) const;
+  bool operator!=(const VideoSubscription& other) const;
+
+  // Subscribes receiver to all streams sent by the specified peer with
+  // specified resolution. It will override any resolution that was used in
+  // `SubscribeToAll` independently from methods call order.
+  VideoSubscription& SubscribeToPeer(
+      absl::string_view peer_name,
+      VideoResolution resolution =
+          VideoResolution(VideoResolution::Spec::kMaxFromSender));
+
+  // Subscribes receiver to the all sent streams with specified resolution.
+  // If any stream was subscribed to with `SubscribeTo` method that will
+  // override resolution passed to this function independently from methods
+  // call order.
+  VideoSubscription& SubscribeToAllPeers(
+      VideoResolution resolution =
+          VideoResolution(VideoResolution::Spec::kMaxFromSender));
+
+  // Returns resolution for specific sender. If no specific resolution was
+  // set for this sender, then will return resolution used for all streams.
+  // If subscription doesn't subscribe to all streams, `absl::nullopt` will be
+  // returned.
+  absl::optional<VideoResolution> GetResolutionForPeer(
+      absl::string_view peer_name) const;
+
+  // Returns a maybe empty list of senders for which peer explicitly
+  // subscribed to with specific resolution.
+  std::vector<std::string> GetSubscribedPeers() const;
+
+  std::string ToString() const;
+
+ private:
+  absl::optional<VideoResolution> default_resolution_ = absl::nullopt;
+  std::map<std::string, VideoResolution> peers_resolution_;
+};
+
+// Contains configuration for echo emulator.
+struct EchoEmulationConfig {
+  // Delay which represents the echo path delay, i.e. how soon rendered signal
+  // should reach capturer.
+  TimeDelta echo_delay = TimeDelta::Millis(50);
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_PCLF_MEDIA_CONFIGURATION_H_
diff --git a/third_party/libwebrtc/api/test/pclf/media_quality_test_params.h b/third_party/libwebrtc/api/test/pclf/media_quality_test_params.h
new file mode 100644
index 0000000000..3377d31f68
--- /dev/null
+++ b/third_party/libwebrtc/api/test/pclf/media_quality_test_params.h
@@ -0,0 +1,189 @@
+/*
+ *  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 API_TEST_PCLF_MEDIA_QUALITY_TEST_PARAMS_H_
+#define API_TEST_PCLF_MEDIA_QUALITY_TEST_PARAMS_H_
+
+#include <cstddef>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "api/async_resolver_factory.h"
+#include "api/audio/audio_mixer.h"
+#include "api/call/call_factory_interface.h"
+#include "api/fec_controller.h"
+#include "api/field_trials_view.h"
+#include "api/rtc_event_log/rtc_event_log_factory_interface.h"
+#include "api/task_queue/task_queue_factory.h"
+#include "api/test/pclf/media_configuration.h"
+#include "api/transport/network_control.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "api/video_codecs/video_encoder_factory.h"
+#include "modules/audio_processing/include/audio_processing.h"
+#include "p2p/base/port_allocator.h"
+#include "rtc_base/network.h"
+#include "rtc_base/rtc_certificate_generator.h"
+#include "rtc_base/ssl_certificate.h"
+#include "rtc_base/thread.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// Contains most part from PeerConnectionFactoryDependencies. Also all fields
+// are optional and defaults will be provided by fixture implementation if
+// any will be omitted.
+//
+// Separate class was introduced to clarify which components can be
+// overridden. For example worker and signaling threads will be provided by
+// fixture implementation. The same is applicable to the media engine. So user
+// can override only some parts of media engine like video encoder/decoder
+// factories.
+struct PeerConnectionFactoryComponents {
+  std::unique_ptr<TaskQueueFactory> task_queue_factory;
+  std::unique_ptr<CallFactoryInterface> call_factory;
+  std::unique_ptr<RtcEventLogFactoryInterface> event_log_factory;
+  std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory;
+  std::unique_ptr<NetworkControllerFactoryInterface> network_controller_factory;
+  std::unique_ptr<NetEqFactory> neteq_factory;
+
+  // Will be passed to MediaEngineInterface, that will be used in
+  // PeerConnectionFactory.
+  std::unique_ptr<VideoEncoderFactory> video_encoder_factory;
+  std::unique_ptr<VideoDecoderFactory> video_decoder_factory;
+
+  std::unique_ptr<FieldTrialsView> trials;
+
+  rtc::scoped_refptr<webrtc::AudioProcessing> audio_processing;
+  rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer;
+};
+
+// Contains most parts from PeerConnectionDependencies. Also all fields are
+// optional and defaults will be provided by fixture implementation if any
+// will be omitted.
+//
+// Separate class was introduced to clarify which components can be
+// overridden. For example observer, which is required to
+// PeerConnectionDependencies, will be provided by fixture implementation,
+// so client can't inject its own. Also only network manager can be overridden
+// inside port allocator.
+struct PeerConnectionComponents {
+  PeerConnectionComponents(rtc::NetworkManager* network_manager,
+                           rtc::PacketSocketFactory* packet_socket_factory)
+      : network_manager(network_manager),
+        packet_socket_factory(packet_socket_factory) {
+    RTC_CHECK(network_manager);
+  }
+
+  rtc::NetworkManager* const network_manager;
+  rtc::PacketSocketFactory* const packet_socket_factory;
+  std::unique_ptr<webrtc::AsyncResolverFactory> async_resolver_factory;
+  std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator;
+  std::unique_ptr<rtc::SSLCertificateVerifier> tls_cert_verifier;
+  std::unique_ptr<IceTransportFactory> ice_transport_factory;
+};
+
+// Contains all components, that can be overridden in peer connection. Also
+// has a network thread, that will be used to communicate with another peers.
+struct InjectableComponents {
+  InjectableComponents(rtc::Thread* network_thread,
+                       rtc::NetworkManager* network_manager,
+                       rtc::PacketSocketFactory* packet_socket_factory)
+      : network_thread(network_thread),
+        worker_thread(nullptr),
+        pcf_dependencies(std::make_unique<PeerConnectionFactoryComponents>()),
+        pc_dependencies(
+            std::make_unique<PeerConnectionComponents>(network_manager,
+                                                       packet_socket_factory)) {
+    RTC_CHECK(network_thread);
+  }
+
+  rtc::Thread* const network_thread;
+  rtc::Thread* worker_thread;
+
+  std::unique_ptr<PeerConnectionFactoryComponents> pcf_dependencies;
+  std::unique_ptr<PeerConnectionComponents> pc_dependencies;
+};
+
+// Contains information about call media streams (up to 1 audio stream and
+// unlimited amount of video streams) and rtc configuration, that will be used
+// to set up peer connection.
+struct Params {
+  // Peer name. If empty - default one will be set by the fixture.
+  absl::optional<std::string> name;
+  // If `audio_config` is set audio stream will be configured
+  absl::optional<AudioConfig> audio_config;
+  // Flags to set on `cricket::PortAllocator`. These flags will be added
+  // to the default ones that are presented on the port allocator.
+  uint32_t port_allocator_extra_flags = cricket::kDefaultPortAllocatorFlags;
+  // If `rtc_event_log_path` is set, an RTCEventLog will be saved in that
+  // location and it will be available for further analysis.
+  absl::optional<std::string> rtc_event_log_path;
+  // If `aec_dump_path` is set, an AEC dump will be saved in that location and
+  // it will be available for further analysis.
+  absl::optional<std::string> aec_dump_path;
+
+  bool use_ulp_fec = false;
+  bool use_flex_fec = false;
+  // Specifies how much video encoder target bitrate should be different than
+  // target bitrate, provided by WebRTC stack. Must be greater then 0. Can be
+  // used to emulate overshooting of video encoders. This multiplier will
+  // be applied for all video encoder on both sides for all layers. Bitrate
+  // estimated by WebRTC stack will be multiplied by this multiplier and then
+  // provided into VideoEncoder::SetRates(...).
+  double video_encoder_bitrate_multiplier = 1.0;
+
+  PeerConnectionInterface::RTCConfiguration rtc_configuration;
+  PeerConnectionInterface::RTCOfferAnswerOptions rtc_offer_answer_options;
+  BitrateSettings bitrate_settings;
+  std::vector<VideoCodecConfig> video_codecs;
+
+  // A list of RTP header extensions which will be enforced on all video streams
+  // added to this peer.
+  std::vector<std::string> extra_video_rtp_header_extensions;
+  // A list of RTP header extensions which will be enforced on all audio streams
+  // added to this peer.
+  std::vector<std::string> extra_audio_rtp_header_extensions;
+};
+
+// Contains parameters that maybe changed by test writer during the test call.
+struct ConfigurableParams {
+  // If `video_configs` is empty - no video should be added to the test call.
+  std::vector<VideoConfig> video_configs;
+
+  VideoSubscription video_subscription =
+      VideoSubscription().SubscribeToAllPeers();
+};
+
+// Contains parameters, that describe how long framework should run quality
+// test.
+struct RunParams {
+  explicit RunParams(TimeDelta run_duration) : run_duration(run_duration) {}
+
+  // Specifies how long the test should be run. This time shows how long
+  // the media should flow after connection was established and before
+  // it will be shut downed.
+  TimeDelta run_duration;
+
+  // If set to true peers will be able to use Flex FEC, otherwise they won't
+  // be able to negotiate it even if it's enabled on per peer level.
+  bool enable_flex_fec_support = false;
+  // If true will set conference mode in SDP media section for all video
+  // tracks for all peers.
+  bool use_conference_mode = false;
+  // If specified echo emulation will be done, by mixing the render audio into
+  // the capture signal. In such case input signal will be reduced by half to
+  // avoid saturation or compression in the echo path simulation.
+  absl::optional<EchoEmulationConfig> echo_emulation_config;
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_PCLF_MEDIA_QUALITY_TEST_PARAMS_H_
diff --git a/third_party/libwebrtc/api/test/pclf/peer_configurer.cc b/third_party/libwebrtc/api/test/pclf/peer_configurer.cc
new file mode 100644
index 0000000000..2203a4c4f0
--- /dev/null
+++ b/third_party/libwebrtc/api/test/pclf/peer_configurer.cc
@@ -0,0 +1,245 @@
+/*
+ *  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.
+ */
+
+#include "api/test/pclf/peer_configurer.h"
+
+#include <set>
+
+#include "absl/strings/string_view.h"
+#include "api/test/pclf/media_configuration.h"
+#include "api/test/pclf/media_quality_test_params.h"
+#include "api/test/peer_network_dependencies.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+PeerConfigurer::PeerConfigurer(
+    const PeerNetworkDependencies& network_dependencies)
+    : components_(std::make_unique<InjectableComponents>(
+          network_dependencies.network_thread,
+          network_dependencies.network_manager,
+          network_dependencies.packet_socket_factory)),
+      params_(std::make_unique<Params>()),
+      configurable_params_(std::make_unique<ConfigurableParams>()) {}
+
+PeerConfigurer* PeerConfigurer::SetName(absl::string_view name) {
+  params_->name = std::string(name);
+  return this;
+}
+
+PeerConfigurer* PeerConfigurer::SetTaskQueueFactory(
+    std::unique_ptr<TaskQueueFactory> task_queue_factory) {
+  components_->pcf_dependencies->task_queue_factory =
+      std::move(task_queue_factory);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetCallFactory(
+    std::unique_ptr<CallFactoryInterface> call_factory) {
+  components_->pcf_dependencies->call_factory = std::move(call_factory);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetEventLogFactory(
+    std::unique_ptr<RtcEventLogFactoryInterface> event_log_factory) {
+  components_->pcf_dependencies->event_log_factory =
+      std::move(event_log_factory);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetFecControllerFactory(
+    std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory) {
+  components_->pcf_dependencies->fec_controller_factory =
+      std::move(fec_controller_factory);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetNetworkControllerFactory(
+    std::unique_ptr<NetworkControllerFactoryInterface>
+        network_controller_factory) {
+  components_->pcf_dependencies->network_controller_factory =
+      std::move(network_controller_factory);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetVideoEncoderFactory(
+    std::unique_ptr<VideoEncoderFactory> video_encoder_factory) {
+  components_->pcf_dependencies->video_encoder_factory =
+      std::move(video_encoder_factory);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetVideoDecoderFactory(
+    std::unique_ptr<VideoDecoderFactory> video_decoder_factory) {
+  components_->pcf_dependencies->video_decoder_factory =
+      std::move(video_decoder_factory);
+  return this;
+}
+
+PeerConfigurer* PeerConfigurer::SetAsyncResolverFactory(
+    std::unique_ptr<webrtc::AsyncResolverFactory> async_resolver_factory) {
+  components_->pc_dependencies->async_resolver_factory =
+      std::move(async_resolver_factory);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetRTCCertificateGenerator(
+    std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator) {
+  components_->pc_dependencies->cert_generator = std::move(cert_generator);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetSSLCertificateVerifier(
+    std::unique_ptr<rtc::SSLCertificateVerifier> tls_cert_verifier) {
+  components_->pc_dependencies->tls_cert_verifier =
+      std::move(tls_cert_verifier);
+  return this;
+}
+
+PeerConfigurer* PeerConfigurer::AddVideoConfig(VideoConfig config) {
+  video_sources_.push_back(
+      CreateSquareFrameGenerator(config, /*type=*/absl::nullopt));
+  configurable_params_->video_configs.push_back(std::move(config));
+  return this;
+}
+PeerConfigurer* PeerConfigurer::AddVideoConfig(
+    VideoConfig config,
+    std::unique_ptr<test::FrameGeneratorInterface> generator) {
+  configurable_params_->video_configs.push_back(std::move(config));
+  video_sources_.push_back(std::move(generator));
+  return this;
+}
+PeerConfigurer* PeerConfigurer::AddVideoConfig(VideoConfig config,
+                                               CapturingDeviceIndex index) {
+  configurable_params_->video_configs.push_back(std::move(config));
+  video_sources_.push_back(index);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetVideoSubscription(
+    VideoSubscription subscription) {
+  configurable_params_->video_subscription = std::move(subscription);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetVideoCodecs(
+    std::vector<VideoCodecConfig> video_codecs) {
+  params_->video_codecs = std::move(video_codecs);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetExtraVideoRtpHeaderExtensions(
+    std::vector<std::string> extensions) {
+  params_->extra_video_rtp_header_extensions = std::move(extensions);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetAudioConfig(AudioConfig config) {
+  params_->audio_config = std::move(config);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetExtraAudioRtpHeaderExtensions(
+    std::vector<std::string> extensions) {
+  params_->extra_audio_rtp_header_extensions = std::move(extensions);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetUseUlpFEC(bool value) {
+  params_->use_ulp_fec = value;
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetUseFlexFEC(bool value) {
+  params_->use_flex_fec = value;
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetVideoEncoderBitrateMultiplier(
+    double multiplier) {
+  params_->video_encoder_bitrate_multiplier = multiplier;
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetNetEqFactory(
+    std::unique_ptr<NetEqFactory> neteq_factory) {
+  components_->pcf_dependencies->neteq_factory = std::move(neteq_factory);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetAudioProcessing(
+    rtc::scoped_refptr<webrtc::AudioProcessing> audio_processing) {
+  components_->pcf_dependencies->audio_processing = audio_processing;
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetAudioMixer(
+    rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer) {
+  components_->pcf_dependencies->audio_mixer = audio_mixer;
+  return this;
+}
+
+PeerConfigurer* PeerConfigurer::SetUseNetworkThreadAsWorkerThread() {
+  components_->worker_thread = components_->network_thread;
+  return this;
+}
+
+PeerConfigurer* PeerConfigurer::SetRtcEventLogPath(std::string path) {
+  params_->rtc_event_log_path = std::move(path);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetAecDumpPath(std::string path) {
+  params_->aec_dump_path = std::move(path);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetRTCConfiguration(
+    PeerConnectionInterface::RTCConfiguration configuration) {
+  params_->rtc_configuration = std::move(configuration);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetRTCOfferAnswerOptions(
+    PeerConnectionInterface::RTCOfferAnswerOptions options) {
+  params_->rtc_offer_answer_options = std::move(options);
+  return this;
+}
+PeerConfigurer* PeerConfigurer::SetBitrateSettings(
+    BitrateSettings bitrate_settings) {
+  params_->bitrate_settings = bitrate_settings;
+  return this;
+}
+
+PeerConfigurer* PeerConfigurer::SetIceTransportFactory(
+    std::unique_ptr<IceTransportFactory> factory) {
+  components_->pc_dependencies->ice_transport_factory = std::move(factory);
+  return this;
+}
+
+PeerConfigurer* PeerConfigurer::SetPortAllocatorExtraFlags(
+    uint32_t extra_flags) {
+  params_->port_allocator_extra_flags = extra_flags;
+  return this;
+}
+std::unique_ptr<InjectableComponents> PeerConfigurer::ReleaseComponents() {
+  RTC_CHECK(components_);
+  auto components = std::move(components_);
+  components_ = nullptr;
+  return components;
+}
+
+// Returns Params and transfer ownership to the caller.
+// Can be called once.
+std::unique_ptr<Params> PeerConfigurer::ReleaseParams() {
+  RTC_CHECK(params_);
+  auto params = std::move(params_);
+  params_ = nullptr;
+  return params;
+}
+
+// Returns ConfigurableParams and transfer ownership to the caller.
+// Can be called once.
+std::unique_ptr<ConfigurableParams>
+PeerConfigurer::ReleaseConfigurableParams() {
+  RTC_CHECK(configurable_params_);
+  auto configurable_params = std::move(configurable_params_);
+  configurable_params_ = nullptr;
+  return configurable_params;
+}
+
+// Returns video sources and transfer frame generators ownership to the
+// caller. Can be called once.
+std::vector<PeerConfigurer::VideoSource> PeerConfigurer::ReleaseVideoSources() {
+  auto video_sources = std::move(video_sources_);
+  video_sources_.clear();
+  return video_sources;
+}
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/pclf/peer_configurer.h b/third_party/libwebrtc/api/test/pclf/peer_configurer.h
new file mode 100644
index 0000000000..996dc5cd89
--- /dev/null
+++ b/third_party/libwebrtc/api/test/pclf/peer_configurer.h
@@ -0,0 +1,200 @@
+/*
+ *  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 API_TEST_PCLF_PEER_CONFIGURER_H_
+#define API_TEST_PCLF_PEER_CONFIGURER_H_
+
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "api/async_resolver_factory.h"
+#include "api/audio/audio_mixer.h"
+#include "api/call/call_factory_interface.h"
+#include "api/fec_controller.h"
+#include "api/rtc_event_log/rtc_event_log_factory_interface.h"
+#include "api/task_queue/task_queue_factory.h"
+#include "api/test/create_peer_connection_quality_test_frame_generator.h"
+#include "api/test/pclf/media_configuration.h"
+#include "api/test/pclf/media_quality_test_params.h"
+#include "api/test/peer_network_dependencies.h"
+#include "api/transport/network_control.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "api/video_codecs/video_encoder_factory.h"
+#include "modules/audio_processing/include/audio_processing.h"
+#include "rtc_base/network.h"
+#include "rtc_base/rtc_certificate_generator.h"
+#include "rtc_base/ssl_certificate.h"
+#include "rtc_base/thread.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// This class is used to fully configure one peer inside a call.
+class PeerConfigurer {
+ public:
+  using VideoSource =
+      absl::variant<std::unique_ptr<test::FrameGeneratorInterface>,
+                    CapturingDeviceIndex>;
+
+  explicit PeerConfigurer(const PeerNetworkDependencies& network_dependencies);
+
+  // Sets peer name that will be used to report metrics related to this peer.
+  // If not set, some default name will be assigned. All names have to be
+  // unique.
+  PeerConfigurer* SetName(absl::string_view name);
+
+  // The parameters of the following 9 methods will be passed to the
+  // PeerConnectionFactoryInterface implementation that will be created for
+  // this peer.
+  PeerConfigurer* SetTaskQueueFactory(
+      std::unique_ptr<TaskQueueFactory> task_queue_factory);
+  PeerConfigurer* SetCallFactory(
+      std::unique_ptr<CallFactoryInterface> call_factory);
+  PeerConfigurer* SetEventLogFactory(
+      std::unique_ptr<RtcEventLogFactoryInterface> event_log_factory);
+  PeerConfigurer* SetFecControllerFactory(
+      std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory);
+  PeerConfigurer* SetNetworkControllerFactory(
+      std::unique_ptr<NetworkControllerFactoryInterface>
+          network_controller_factory);
+  PeerConfigurer* SetVideoEncoderFactory(
+      std::unique_ptr<VideoEncoderFactory> video_encoder_factory);
+  PeerConfigurer* SetVideoDecoderFactory(
+      std::unique_ptr<VideoDecoderFactory> video_decoder_factory);
+  // Set a custom NetEqFactory to be used in the call.
+  PeerConfigurer* SetNetEqFactory(std::unique_ptr<NetEqFactory> neteq_factory);
+  PeerConfigurer* SetAudioProcessing(
+      rtc::scoped_refptr<webrtc::AudioProcessing> audio_processing);
+  PeerConfigurer* SetAudioMixer(
+      rtc::scoped_refptr<webrtc::AudioMixer> audio_mixer);
+
+  // Forces the Peerconnection to use the network thread as the worker thread.
+  // Ie, worker thread and the network thread is the same thread.
+  PeerConfigurer* SetUseNetworkThreadAsWorkerThread();
+
+  // The parameters of the following 4 methods will be passed to the
+  // PeerConnectionInterface implementation that will be created for this
+  // peer.
+  PeerConfigurer* SetAsyncResolverFactory(
+      std::unique_ptr<webrtc::AsyncResolverFactory> async_resolver_factory);
+  PeerConfigurer* SetRTCCertificateGenerator(
+      std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator);
+  PeerConfigurer* SetSSLCertificateVerifier(
+      std::unique_ptr<rtc::SSLCertificateVerifier> tls_cert_verifier);
+  PeerConfigurer* SetIceTransportFactory(
+      std::unique_ptr<IceTransportFactory> factory);
+  // Flags to set on `cricket::PortAllocator`. These flags will be added
+  // to the default ones that are presented on the port allocator.
+  // For possible values check p2p/base/port_allocator.h.
+  PeerConfigurer* SetPortAllocatorExtraFlags(uint32_t extra_flags);
+
+  // Add new video stream to the call that will be sent from this peer.
+  // Default implementation of video frames generator will be used.
+  PeerConfigurer* AddVideoConfig(VideoConfig config);
+  // Add new video stream to the call that will be sent from this peer with
+  // provided own implementation of video frames generator.
+  PeerConfigurer* AddVideoConfig(
+      VideoConfig config,
+      std::unique_ptr<test::FrameGeneratorInterface> generator);
+  // Add new video stream to the call that will be sent from this peer.
+  // Capturing device with specified index will be used to get input video.
+  PeerConfigurer* AddVideoConfig(VideoConfig config,
+                                 CapturingDeviceIndex capturing_device_index);
+  // Sets video subscription for the peer. By default subscription will
+  // include all streams with `VideoSubscription::kSameAsSendStream`
+  // resolution. To this behavior use this method.
+  PeerConfigurer* SetVideoSubscription(VideoSubscription subscription);
+  // Sets the list of video codecs used by the peer during the test. These
+  // codecs will be negotiated in SDP during offer/answer exchange. The order
+  // of these codecs during negotiation will be the same as in `video_codecs`.
+  // Codecs have to be available in codecs list provided by peer connection to
+  // be negotiated. If some of specified codecs won't be found, the test will
+  // crash.
+  PeerConfigurer* SetVideoCodecs(std::vector<VideoCodecConfig> video_codecs);
+  // Sets a list of RTP header extensions which will be enforced on all video
+  // streams added to this peer.
+  PeerConfigurer* SetExtraVideoRtpHeaderExtensions(
+      std::vector<std::string> extensions);
+  // Sets the audio stream for the call from this peer. If this method won't
+  // be invoked, this peer will send no audio.
+  PeerConfigurer* SetAudioConfig(AudioConfig config);
+  // Sets a list of RTP header extensions which will be enforced on all audio
+  // streams added to this peer.
+  PeerConfigurer* SetExtraAudioRtpHeaderExtensions(
+      std::vector<std::string> extensions);
+
+  // Set if ULP FEC should be used or not. False by default.
+  PeerConfigurer* SetUseUlpFEC(bool value);
+  // Set if Flex FEC should be used or not. False by default.
+  // Client also must enable `enable_flex_fec_support` in the `RunParams` to
+  // be able to use this feature.
+  PeerConfigurer* SetUseFlexFEC(bool value);
+  // Specifies how much video encoder target bitrate should be different than
+  // target bitrate, provided by WebRTC stack. Must be greater than 0. Can be
+  // used to emulate overshooting of video encoders. This multiplier will
+  // be applied for all video encoder on both sides for all layers. Bitrate
+  // estimated by WebRTC stack will be multiplied by this multiplier and then
+  // provided into VideoEncoder::SetRates(...). 1.0 by default.
+  PeerConfigurer* SetVideoEncoderBitrateMultiplier(double multiplier);
+
+  // If is set, an RTCEventLog will be saved in that location and it will be
+  // available for further analysis.
+  PeerConfigurer* SetRtcEventLogPath(std::string path);
+  // If is set, an AEC dump will be saved in that location and it will be
+  // available for further analysis.
+  PeerConfigurer* SetAecDumpPath(std::string path);
+  PeerConfigurer* SetRTCConfiguration(
+      PeerConnectionInterface::RTCConfiguration configuration);
+  PeerConfigurer* SetRTCOfferAnswerOptions(
+      PeerConnectionInterface::RTCOfferAnswerOptions options);
+  // Set bitrate parameters on PeerConnection. This constraints will be
+  // applied to all summed RTP streams for this peer.
+  PeerConfigurer* SetBitrateSettings(BitrateSettings bitrate_settings);
+
+  // Returns InjectableComponents and transfer ownership to the caller.
+  // Can be called once.
+  std::unique_ptr<InjectableComponents> ReleaseComponents();
+
+  // Returns Params and transfer ownership to the caller.
+  // Can be called once.
+  std::unique_ptr<Params> ReleaseParams();
+
+  // Returns ConfigurableParams and transfer ownership to the caller.
+  // Can be called once.
+  std::unique_ptr<ConfigurableParams> ReleaseConfigurableParams();
+
+  // Returns video sources and transfer frame generators ownership to the
+  // caller. Can be called once.
+  std::vector<VideoSource> ReleaseVideoSources();
+
+  InjectableComponents* components() { return components_.get(); }
+  Params* params() { return params_.get(); }
+  ConfigurableParams* configurable_params() {
+    return configurable_params_.get();
+  }
+  const Params& params() const { return *params_; }
+  const ConfigurableParams& configurable_params() const {
+    return *configurable_params_;
+  }
+  std::vector<VideoSource>* video_sources() { return &video_sources_; }
+
+ private:
+  std::unique_ptr<InjectableComponents> components_;
+  std::unique_ptr<Params> params_;
+  std::unique_ptr<ConfigurableParams> configurable_params_;
+  std::vector<VideoSource> video_sources_;
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_PCLF_PEER_CONFIGURER_H_
diff --git a/third_party/libwebrtc/api/test/peer_network_dependencies.h b/third_party/libwebrtc/api/test/peer_network_dependencies.h
new file mode 100644
index 0000000000..6f85ad0a4d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/peer_network_dependencies.h
@@ -0,0 +1,32 @@
+/*
+ *  Copyright (c) 2021 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_TEST_PEER_NETWORK_DEPENDENCIES_H_
+#define API_TEST_PEER_NETWORK_DEPENDENCIES_H_
+
+#include "api/packet_socket_factory.h"
+#include "rtc_base/network.h"
+#include "rtc_base/thread.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// The network dependencies needed when adding a peer to tests using
+// PeerConnectionE2EQualityTestFixture.
+struct PeerNetworkDependencies {
+  rtc::Thread* network_thread;
+  rtc::NetworkManager* network_manager;
+  rtc::PacketSocketFactory* packet_socket_factory;
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_PEER_NETWORK_DEPENDENCIES_H_
diff --git a/third_party/libwebrtc/api/test/peerconnection_quality_test_fixture.h b/third_party/libwebrtc/api/test/peerconnection_quality_test_fixture.h
new file mode 100644
index 0000000000..74470cdf86
--- /dev/null
+++ b/third_party/libwebrtc/api/test/peerconnection_quality_test_fixture.h
@@ -0,0 +1,142 @@
+/*
+ *  Copyright (c) 2018 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_TEST_PEERCONNECTION_QUALITY_TEST_FIXTURE_H_
+#define API_TEST_PEERCONNECTION_QUALITY_TEST_FIXTURE_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <functional>
+#include <map>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "absl/base/macros.h"
+#include "absl/memory/memory.h"
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "api/async_resolver_factory.h"
+#include "api/audio/audio_mixer.h"
+#include "api/call/call_factory_interface.h"
+#include "api/fec_controller.h"
+#include "api/function_view.h"
+#include "api/media_stream_interface.h"
+#include "api/peer_connection_interface.h"
+#include "api/rtc_event_log/rtc_event_log_factory_interface.h"
+#include "api/rtp_parameters.h"
+#include "api/task_queue/task_queue_factory.h"
+#include "api/test/audio_quality_analyzer_interface.h"
+#include "api/test/frame_generator_interface.h"
+#include "api/test/pclf/media_configuration.h"
+#include "api/test/pclf/media_quality_test_params.h"
+#include "api/test/pclf/peer_configurer.h"
+#include "api/test/peer_network_dependencies.h"
+#include "api/test/simulated_network.h"
+#include "api/test/stats_observer_interface.h"
+#include "api/test/track_id_stream_info_map.h"
+#include "api/test/video/video_frame_writer.h"
+#include "api/test/video_quality_analyzer_interface.h"
+#include "api/transport/network_control.h"
+#include "api/units/time_delta.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "api/video_codecs/video_encoder.h"
+#include "api/video_codecs/video_encoder_factory.h"
+#include "media/base/media_constants.h"
+#include "modules/audio_processing/include/audio_processing.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/network.h"
+#include "rtc_base/rtc_certificate_generator.h"
+#include "rtc_base/ssl_certificate.h"
+#include "rtc_base/thread.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// API is in development. Can be changed/removed without notice.
+class PeerConnectionE2EQualityTestFixture {
+ public:
+  // Represent an entity that will report quality metrics after test.
+  class QualityMetricsReporter : public StatsObserverInterface {
+   public:
+    virtual ~QualityMetricsReporter() = default;
+
+    // Invoked by framework after peer connection factory and peer connection
+    // itself will be created but before offer/answer exchange will be started.
+    // `test_case_name` is name of test case, that should be used to report all
+    // metrics.
+    // `reporter_helper` is a pointer to a class that will allow track_id to
+    // stream_id matching. The caller is responsible for ensuring the
+    // TrackIdStreamInfoMap will be valid from Start() to
+    // StopAndReportResults().
+    virtual void Start(absl::string_view test_case_name,
+                       const TrackIdStreamInfoMap* reporter_helper) = 0;
+
+    // Invoked by framework after call is ended and peer connection factory and
+    // peer connection are destroyed.
+    virtual void StopAndReportResults() = 0;
+  };
+
+  // Represents single participant in call and can be used to perform different
+  // in-call actions. Might be extended in future.
+  class PeerHandle {
+   public:
+    virtual ~PeerHandle() = default;
+  };
+
+  virtual ~PeerConnectionE2EQualityTestFixture() = default;
+
+  // Add activity that will be executed on the best effort at least after
+  // `target_time_since_start` after call will be set up (after offer/answer
+  // exchange, ICE gathering will be done and ICE candidates will passed to
+  // remote side). `func` param is amount of time spent from the call set up.
+  virtual void ExecuteAt(TimeDelta target_time_since_start,
+                         std::function<void(TimeDelta)> func) = 0;
+  // Add activity that will be executed every `interval` with first execution
+  // on the best effort at least after `initial_delay_since_start` after call
+  // will be set up (after all participants will be connected). `func` param is
+  // amount of time spent from the call set up.
+  virtual void ExecuteEvery(TimeDelta initial_delay_since_start,
+                            TimeDelta interval,
+                            std::function<void(TimeDelta)> func) = 0;
+
+  // Add stats reporter entity to observe the test.
+  virtual void AddQualityMetricsReporter(
+      std::unique_ptr<QualityMetricsReporter> quality_metrics_reporter) = 0;
+
+  // Add a new peer to the call and return an object through which caller
+  // can configure peer's behavior.
+  // `network_dependencies` are used to provide networking for peer's peer
+  // connection. Members must be non-null.
+  // `configurer` function will be used to configure peer in the call.
+  virtual PeerHandle* AddPeer(std::unique_ptr<PeerConfigurer> configurer) = 0;
+
+  // Runs the media quality test, which includes setting up the call with
+  // configured participants, running it according to provided `run_params` and
+  // terminating it properly at the end. During call duration media quality
+  // metrics are gathered, which are then reported to stdout and (if configured)
+  // to the json/protobuf output file through the WebRTC perf test results
+  // reporting system.
+  virtual void Run(RunParams run_params) = 0;
+
+  // Returns real test duration - the time of test execution measured during
+  // test. Client must call this method only after test is finished (after
+  // Run(...) method returned). Test execution time is time from end of call
+  // setup (offer/answer, ICE candidates exchange done and ICE connected) to
+  // start of call tear down (PeerConnection closed).
+  virtual TimeDelta GetRealTestDuration() const = 0;
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_PEERCONNECTION_QUALITY_TEST_FIXTURE_H_
diff --git a/third_party/libwebrtc/api/test/peerconnection_quality_test_fixture_unittest.cc b/third_party/libwebrtc/api/test/peerconnection_quality_test_fixture_unittest.cc
new file mode 100644
index 0000000000..26ae8cf98f
--- /dev/null
+++ b/third_party/libwebrtc/api/test/peerconnection_quality_test_fixture_unittest.cc
@@ -0,0 +1,142 @@
+/*
+ *  Copyright 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.
+ */
+
+#include "api/test/peerconnection_quality_test_fixture.h"
+
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/test/pclf/media_configuration.h"
+#include "api/test/video/video_frame_writer.h"
+#include "rtc_base/gunit.h"
+#include "test/gmock.h"
+#include "test/testsupport/file_utils.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+namespace {
+
+using ::testing::Eq;
+
+TEST(PclfVideoSubscriptionTest,
+     MaxFromSenderSpecEqualIndependentOfOtherFields) {
+  VideoResolution r1(VideoResolution::Spec::kMaxFromSender);
+  r1.set_width(1);
+  r1.set_height(2);
+  r1.set_fps(3);
+  VideoResolution r2(VideoResolution::Spec::kMaxFromSender);
+  r1.set_width(4);
+  r1.set_height(5);
+  r1.set_fps(6);
+  EXPECT_EQ(r1, r2);
+}
+
+TEST(PclfVideoSubscriptionTest, WhenSpecIsNotSetFieldsAreCompared) {
+  VideoResolution test_resolution(/*width=*/1, /*height=*/2,
+                                  /*fps=*/3);
+  VideoResolution equal_resolution(/*width=*/1, /*height=*/2,
+                                   /*fps=*/3);
+  VideoResolution different_width(/*width=*/10, /*height=*/2,
+                                  /*fps=*/3);
+  VideoResolution different_height(/*width=*/1, /*height=*/20,
+                                   /*fps=*/3);
+  VideoResolution different_fps(/*width=*/1, /*height=*/20,
+                                /*fps=*/30);
+
+  EXPECT_EQ(test_resolution, equal_resolution);
+  EXPECT_NE(test_resolution, different_width);
+  EXPECT_NE(test_resolution, different_height);
+  EXPECT_NE(test_resolution, different_fps);
+}
+
+TEST(PclfVideoSubscriptionTest, GetMaxResolutionForEmptyReturnsNullopt) {
+  absl::optional<VideoResolution> resolution =
+      VideoSubscription::GetMaxResolution(std::vector<VideoConfig>{});
+  ASSERT_FALSE(resolution.has_value());
+}
+
+TEST(PclfVideoSubscriptionTest, GetMaxResolutionSelectMaxForEachDimention) {
+  VideoConfig max_width(/*width=*/1000, /*height=*/1, /*fps=*/1);
+  VideoConfig max_height(/*width=*/1, /*height=*/100, /*fps=*/1);
+  VideoConfig max_fps(/*width=*/1, /*height=*/1, /*fps=*/10);
+
+  absl::optional<VideoResolution> resolution =
+      VideoSubscription::GetMaxResolution(
+          std::vector<VideoConfig>{max_width, max_height, max_fps});
+  ASSERT_TRUE(resolution.has_value());
+  EXPECT_EQ(resolution->width(), static_cast<size_t>(1000));
+  EXPECT_EQ(resolution->height(), static_cast<size_t>(100));
+  EXPECT_EQ(resolution->fps(), 10);
+}
+
+struct TestVideoFrameWriter : public test::VideoFrameWriter {
+ public:
+  TestVideoFrameWriter(absl::string_view file_name_prefix,
+                       const VideoResolution& resolution)
+      : file_name_prefix(file_name_prefix), resolution(resolution) {}
+
+  bool WriteFrame(const VideoFrame& frame) override { return true; }
+
+  void Close() override {}
+
+  std::string file_name_prefix;
+  VideoResolution resolution;
+};
+
+TEST(VideoDumpOptionsTest, InputVideoWriterHasCorrectFileName) {
+  VideoResolution resolution(/*width=*/1280, /*height=*/720, /*fps=*/30);
+
+  TestVideoFrameWriter* writer = nullptr;
+  VideoDumpOptions options("foo", /*sampling_modulo=*/1,
+                           /*export_frame_ids=*/false,
+                           /*video_frame_writer_factory=*/
+                           [&](absl::string_view file_name_prefix,
+                               const VideoResolution& resolution) {
+                             auto out = std::make_unique<TestVideoFrameWriter>(
+                                 file_name_prefix, resolution);
+                             writer = out.get();
+                             return out;
+                           });
+  std::unique_ptr<test::VideoFrameWriter> created_writer =
+      options.CreateInputDumpVideoFrameWriter("alice-video", resolution);
+
+  ASSERT_TRUE(writer != nullptr);
+  ASSERT_THAT(writer->file_name_prefix,
+              Eq(test::JoinFilename("foo", "alice-video_1280x720_30")));
+  ASSERT_THAT(writer->resolution, Eq(resolution));
+}
+
+TEST(VideoDumpOptionsTest, OutputVideoWriterHasCorrectFileName) {
+  VideoResolution resolution(/*width=*/1280, /*height=*/720, /*fps=*/30);
+
+  TestVideoFrameWriter* writer = nullptr;
+  VideoDumpOptions options("foo", /*sampling_modulo=*/1,
+                           /*export_frame_ids=*/false,
+                           /*video_frame_writer_factory=*/
+                           [&](absl::string_view file_name_prefix,
+                               const VideoResolution& resolution) {
+                             auto out = std::make_unique<TestVideoFrameWriter>(
+                                 file_name_prefix, resolution);
+                             writer = out.get();
+                             return out;
+                           });
+  std::unique_ptr<test::VideoFrameWriter> created_writer =
+      options.CreateOutputDumpVideoFrameWriter("alice-video", "bob",
+                                               resolution);
+
+  ASSERT_TRUE(writer != nullptr);
+  ASSERT_THAT(writer->file_name_prefix,
+              Eq(test::JoinFilename("foo", "alice-video_bob_1280x720_30")));
+  ASSERT_THAT(writer->resolution, Eq(resolution));
+}
+
+}  // namespace
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/simulated_network.h b/third_party/libwebrtc/api/test/simulated_network.h
new file mode 100644
index 0000000000..04c5517c8d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/simulated_network.h
@@ -0,0 +1,139 @@
+/*
+ *  Copyright (c) 2018 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_TEST_SIMULATED_NETWORK_H_
+#define API_TEST_SIMULATED_NETWORK_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <deque>
+#include <queue>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "rtc_base/random.h"
+#include "rtc_base/thread_annotations.h"
+
+namespace webrtc {
+
+struct PacketInFlightInfo {
+  PacketInFlightInfo(size_t size, int64_t send_time_us, uint64_t packet_id)
+      : size(size), send_time_us(send_time_us), packet_id(packet_id) {}
+
+  size_t size;
+  int64_t send_time_us;
+  // Unique identifier for the packet in relation to other packets in flight.
+  uint64_t packet_id;
+};
+
+struct PacketDeliveryInfo {
+  static constexpr int kNotReceived = -1;
+  PacketDeliveryInfo(PacketInFlightInfo source, int64_t receive_time_us)
+      : receive_time_us(receive_time_us), packet_id(source.packet_id) {}
+
+  bool operator==(const PacketDeliveryInfo& other) const {
+    return receive_time_us == other.receive_time_us &&
+           packet_id == other.packet_id;
+  }
+
+  int64_t receive_time_us;
+  uint64_t packet_id;
+};
+
+// BuiltInNetworkBehaviorConfig is a built-in network behavior configuration
+// for built-in network behavior that will be used by WebRTC if no custom
+// NetworkBehaviorInterface is provided.
+struct BuiltInNetworkBehaviorConfig {
+  //  Queue length in number of packets.
+  size_t queue_length_packets = 0;
+  // Delay in addition to capacity induced delay.
+  int queue_delay_ms = 0;
+  // Standard deviation of the extra delay.
+  int delay_standard_deviation_ms = 0;
+  // Link capacity in kbps.
+  int link_capacity_kbps = 0;
+  // Random packet loss.
+  int loss_percent = 0;
+  // If packets are allowed to be reordered.
+  bool allow_reordering = false;
+  // The average length of a burst of lost packets.
+  int avg_burst_loss_length = -1;
+  // Additional bytes to add to packet size.
+  int packet_overhead = 0;
+};
+
+// Interface that represents a Network behaviour.
+//
+// It is clients of this interface responsibility to enqueue and dequeue
+// packets (based on the estimated delivery time expressed by
+// NextDeliveryTimeUs).
+//
+// To enqueue packets, call EnqueuePacket:
+// EXPECT_TRUE(network.EnqueuePacket(
+//     PacketInFlightInfo(/*size=*/1, /*send_time_us=*/0, /*packet_id=*/1)));
+//
+// To know when to call DequeueDeliverablePackets to pull packets out of the
+// network, call NextDeliveryTimeUs and schedule a task to invoke
+// DequeueDeliverablePackets (if not already scheduled).
+//
+// DequeueDeliverablePackets will return a vector of delivered packets, but this
+// vector can be empty in case of extra delay. In such case, make sure to invoke
+// NextDeliveryTimeUs and schedule a task to call DequeueDeliverablePackets for
+// the next estimated delivery of packets.
+//
+// std::vector<PacketDeliveryInfo> delivered_packets =
+//     network.DequeueDeliverablePackets(/*receive_time_us=*/1000000);
+class NetworkBehaviorInterface {
+ public:
+  // Enqueues a packet in the network and returns true if the action was
+  // successful, false otherwise (for example, because the network capacity has
+  // been saturated). If the return value is false, the packet should be
+  // considered as dropped and it will not be returned by future calls
+  // to DequeueDeliverablePackets.
+  // Packets enqueued will exit the network when DequeueDeliverablePackets is
+  // called and enough time has passed (see NextDeliveryTimeUs).
+  virtual bool EnqueuePacket(PacketInFlightInfo packet_info) = 0;
+  // Retrieves all packets that should be delivered by the given receive time.
+  // Not all the packets in the returned std::vector are actually delivered.
+  // In order to know the state of each packet it is necessary to check the
+  // `receive_time_us` field of each packet. If that is set to
+  // PacketDeliveryInfo::kNotReceived then the packet is considered lost in the
+  // network.
+  virtual std::vector<PacketDeliveryInfo> DequeueDeliverablePackets(
+      int64_t receive_time_us) = 0;
+  // Returns time in microseconds when caller should call
+  // DequeueDeliverablePackets to get the next set of delivered packets. It is
+  // possible that no packet will be delivered by that time (e.g. in case of
+  // random extra delay), in such case this method should be called again to get
+  // the updated estimated delivery time.
+  virtual absl::optional<int64_t> NextDeliveryTimeUs() const = 0;
+  virtual ~NetworkBehaviorInterface() = default;
+};
+
+// Class simulating a network link. This is a simple and naive solution just
+// faking capacity and adding an extra transport delay in addition to the
+// capacity introduced delay.
+class SimulatedNetworkInterface : public NetworkBehaviorInterface {
+ public:
+  // Sets a new configuration.
+  virtual void SetConfig(const BuiltInNetworkBehaviorConfig& config) = 0;
+  virtual void UpdateConfig(
+      std::function<void(BuiltInNetworkBehaviorConfig*)> config_modifier) = 0;
+  // Pauses the network until `until_us`. This affects both delivery (calling
+  // DequeueDeliverablePackets before `until_us` results in an empty std::vector
+  // of packets) and capacity (the network is paused, so packets are not
+  // flowing and they will restart flowing at `until_us`).
+  virtual void PauseTransmissionUntil(int64_t until_us) = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_SIMULATED_NETWORK_H_
diff --git a/third_party/libwebrtc/api/test/simulcast_test_fixture.h b/third_party/libwebrtc/api/test/simulcast_test_fixture.h
new file mode 100644
index 0000000000..c7130d2909
--- /dev/null
+++ b/third_party/libwebrtc/api/test/simulcast_test_fixture.h
@@ -0,0 +1,45 @@
+/*
+ *  Copyright (c) 2018 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_TEST_SIMULCAST_TEST_FIXTURE_H_
+#define API_TEST_SIMULCAST_TEST_FIXTURE_H_
+
+namespace webrtc {
+namespace test {
+
+class SimulcastTestFixture {
+ public:
+  virtual ~SimulcastTestFixture() = default;
+
+  virtual void TestKeyFrameRequestsOnAllStreams() = 0;
+  virtual void TestKeyFrameRequestsOnSpecificStreams() = 0;
+  virtual void TestPaddingAllStreams() = 0;
+  virtual void TestPaddingTwoStreams() = 0;
+  virtual void TestPaddingTwoStreamsOneMaxedOut() = 0;
+  virtual void TestPaddingOneStream() = 0;
+  virtual void TestPaddingOneStreamTwoMaxedOut() = 0;
+  virtual void TestSendAllStreams() = 0;
+  virtual void TestDisablingStreams() = 0;
+  virtual void TestActiveStreams() = 0;
+  virtual void TestSwitchingToOneStream() = 0;
+  virtual void TestSwitchingToOneOddStream() = 0;
+  virtual void TestSwitchingToOneSmallStream() = 0;
+  virtual void TestSpatioTemporalLayers333PatternEncoder() = 0;
+  virtual void TestSpatioTemporalLayers321PatternEncoder() = 0;
+  virtual void TestStrideEncodeDecode() = 0;
+  virtual void TestDecodeWidthHeightSet() = 0;
+  virtual void
+  TestEncoderInfoForDefaultTemporalLayerProfileHasFpsAllocation() = 0;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_SIMULCAST_TEST_FIXTURE_H_
diff --git a/third_party/libwebrtc/api/test/stats_observer_interface.h b/third_party/libwebrtc/api/test/stats_observer_interface.h
new file mode 100644
index 0000000000..58d8f52d77
--- /dev/null
+++ b/third_party/libwebrtc/api/test/stats_observer_interface.h
@@ -0,0 +1,35 @@
+/*
+ *  Copyright (c) 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_TEST_STATS_OBSERVER_INTERFACE_H_
+#define API_TEST_STATS_OBSERVER_INTERFACE_H_
+
+#include "absl/strings/string_view.h"
+#include "api/stats/rtc_stats_report.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// API is in development and can be changed without notice.
+class StatsObserverInterface {
+ public:
+  virtual ~StatsObserverInterface() = default;
+
+  // Method called when stats reports are available for the PeerConnection
+  // identified by `pc_label`.
+  virtual void OnStatsReports(
+      absl::string_view pc_label,
+      const rtc::scoped_refptr<const RTCStatsReport>& report) = 0;
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_STATS_OBSERVER_INTERFACE_H_
diff --git a/third_party/libwebrtc/api/test/test_dependency_factory.cc b/third_party/libwebrtc/api/test/test_dependency_factory.cc
new file mode 100644
index 0000000000..41ad70cc3f
--- /dev/null
+++ b/third_party/libwebrtc/api/test/test_dependency_factory.cc
@@ -0,0 +1,54 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#include "api/test/test_dependency_factory.h"
+
+#include <memory>
+#include <utility>
+
+#include "rtc_base/checks.h"
+#include "rtc_base/platform_thread_types.h"
+
+namespace webrtc {
+
+namespace {
+// This checks everything in this file gets called on the same thread. It's
+// static because it needs to look at the static methods too.
+bool IsValidTestDependencyFactoryThread() {
+  const rtc::PlatformThreadRef main_thread = rtc::CurrentThreadRef();
+  return rtc::IsThreadRefEqual(main_thread, rtc::CurrentThreadRef());
+}
+}  // namespace
+
+std::unique_ptr<TestDependencyFactory> TestDependencyFactory::instance_ =
+    nullptr;
+
+const TestDependencyFactory& TestDependencyFactory::GetInstance() {
+  RTC_DCHECK(IsValidTestDependencyFactoryThread());
+  if (instance_ == nullptr) {
+    instance_ = std::make_unique<TestDependencyFactory>();
+  }
+  return *instance_;
+}
+
+void TestDependencyFactory::SetInstance(
+    std::unique_ptr<TestDependencyFactory> instance) {
+  RTC_DCHECK(IsValidTestDependencyFactoryThread());
+  RTC_CHECK(instance_ == nullptr);
+  instance_ = std::move(instance);
+}
+
+std::unique_ptr<VideoQualityTestFixtureInterface::InjectionComponents>
+TestDependencyFactory::CreateComponents() const {
+  RTC_DCHECK(IsValidTestDependencyFactoryThread());
+  return nullptr;
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/test_dependency_factory.h b/third_party/libwebrtc/api/test/test_dependency_factory.h
new file mode 100644
index 0000000000..29f00b8070
--- /dev/null
+++ b/third_party/libwebrtc/api/test/test_dependency_factory.h
@@ -0,0 +1,48 @@
+/*
+ *  Copyright (c) 2018 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_TEST_TEST_DEPENDENCY_FACTORY_H_
+#define API_TEST_TEST_DEPENDENCY_FACTORY_H_
+
+#include <memory>
+
+#include "api/test/video_quality_test_fixture.h"
+
+namespace webrtc {
+
+// Override this class if to inject custom components into WebRTC tests.
+// Not all WebRTC tests get their components from here, so you need to make
+// sure the tests you want actually use this class.
+//
+// This class is not thread safe and you need to make call calls from the same
+// (test main) thread.
+class TestDependencyFactory {
+ public:
+  virtual ~TestDependencyFactory() = default;
+
+  // The singleton MUST be stateless since tests execute in any order. It must
+  // be set before tests start executing.
+  static const TestDependencyFactory& GetInstance();
+  static void SetInstance(std::unique_ptr<TestDependencyFactory> instance);
+
+  // Returns the component a test should use. Returning nullptr means that the
+  // test is free to use whatever defaults it wants. The injection components
+  // themselves can be mutable, but we need to make new ones for every test that
+  // executes so state doesn't spread between tests.
+  virtual std::unique_ptr<VideoQualityTestFixtureInterface::InjectionComponents>
+  CreateComponents() const;
+
+ private:
+  static std::unique_ptr<TestDependencyFactory> instance_;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_TEST_DEPENDENCY_FACTORY_H_
diff --git a/third_party/libwebrtc/api/test/time_controller.cc b/third_party/libwebrtc/api/test/time_controller.cc
new file mode 100644
index 0000000000..364dbc235d
--- /dev/null
+++ b/third_party/libwebrtc/api/test/time_controller.cc
@@ -0,0 +1,43 @@
+/*
+ *  Copyright (c) 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.
+ */
+#include "api/test/time_controller.h"
+
+namespace webrtc {
+std::unique_ptr<TaskQueueFactory> TimeController::CreateTaskQueueFactory() {
+  class FactoryWrapper final : public TaskQueueFactory {
+   public:
+    explicit FactoryWrapper(TaskQueueFactory* inner_factory)
+        : inner_(inner_factory) {}
+    std::unique_ptr<TaskQueueBase, TaskQueueDeleter> CreateTaskQueue(
+        absl::string_view name,
+        Priority priority) const override {
+      return inner_->CreateTaskQueue(name, priority);
+    }
+
+   private:
+    TaskQueueFactory* const inner_;
+  };
+  return std::make_unique<FactoryWrapper>(GetTaskQueueFactory());
+}
+bool TimeController::Wait(const std::function<bool()>& condition,
+                          TimeDelta max_duration) {
+  // Step size is chosen to be short enough to not significantly affect latency
+  // in real time tests while being long enough to avoid adding too much load to
+  // the system.
+  const auto kStep = TimeDelta::Millis(5);
+  for (auto elapsed = TimeDelta::Zero(); elapsed < max_duration;
+       elapsed += kStep) {
+    if (condition())
+      return true;
+    AdvanceTime(kStep);
+  }
+  return condition();
+}
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/time_controller.h b/third_party/libwebrtc/api/test/time_controller.h
new file mode 100644
index 0000000000..121f65cea9
--- /dev/null
+++ b/third_party/libwebrtc/api/test/time_controller.h
@@ -0,0 +1,89 @@
+/*
+ *  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_TEST_TIME_CONTROLLER_H_
+#define API_TEST_TIME_CONTROLLER_H_
+
+#include <functional>
+#include <memory>
+#include <string>
+
+#include "api/task_queue/task_queue_factory.h"
+#include "api/units/time_delta.h"
+#include "api/units/timestamp.h"
+#include "rtc_base/synchronization/yield_policy.h"
+#include "rtc_base/thread.h"
+#include "system_wrappers/include/clock.h"
+
+namespace webrtc {
+// Interface for controlling time progress. This allows us to execute test code
+// in either real time or simulated time by using different implementation of
+// this interface.
+class TimeController {
+ public:
+  virtual ~TimeController() = default;
+  // Provides a clock instance that follows implementation defined time
+  // progress.
+  virtual Clock* GetClock() = 0;
+  // The returned factory will created task queues that runs in implementation
+  // defined time domain.
+  virtual TaskQueueFactory* GetTaskQueueFactory() = 0;
+  // Simple helper to create an owned factory that can be used as a parameter
+  // for PeerConnectionFactory. Note that this might depend on the underlying
+  // time controller and therfore must be destroyed before the time controller
+  // is destroyed.
+  std::unique_ptr<TaskQueueFactory> CreateTaskQueueFactory();
+
+  // Creates an rtc::Thread instance. If `socket_server` is nullptr, a default
+  // noop socket server is created.
+  // Returned thread is not null and started.
+  virtual std::unique_ptr<rtc::Thread> CreateThread(
+      const std::string& name,
+      std::unique_ptr<rtc::SocketServer> socket_server = nullptr) = 0;
+
+  // Creates an rtc::Thread instance that ensure that it's set as the current
+  // thread.
+  virtual rtc::Thread* GetMainThread() = 0;
+  // Allow task queues and process threads created by this instance to execute
+  // for the given `duration`.
+  virtual void AdvanceTime(TimeDelta duration) = 0;
+
+  // Waits until condition() == true, polling condition() in small time
+  // intervals.
+  // Returns true if condition() was evaluated to true before `max_duration`
+  // elapsed and false otherwise.
+  bool Wait(const std::function<bool()>& condition,
+            TimeDelta max_duration = TimeDelta::Seconds(5));
+};
+
+// Interface for telling time, scheduling an event to fire at a particular time,
+// and waiting for time to pass.
+class ControlledAlarmClock {
+ public:
+  virtual ~ControlledAlarmClock() = default;
+
+  // Gets a clock that tells the alarm clock's notion of time.
+  virtual Clock* GetClock() = 0;
+
+  // Schedules the alarm to fire at `deadline`.
+  // An alarm clock only supports one deadline. Calls to `ScheduleAlarmAt` with
+  // an earlier deadline will reset the alarm to fire earlier.Calls to
+  // `ScheduleAlarmAt` with a later deadline are ignored. Returns true if the
+  // deadline changed, false otherwise.
+  virtual bool ScheduleAlarmAt(Timestamp deadline) = 0;
+
+  // Sets the callback that should be run when the alarm fires.
+  virtual void SetCallback(std::function<void()> callback) = 0;
+
+  // Waits for `duration` to pass, according to the alarm clock.
+  virtual void Sleep(TimeDelta duration) = 0;
+};
+
+}  // namespace webrtc
+#endif  // API_TEST_TIME_CONTROLLER_H_
diff --git a/third_party/libwebrtc/api/test/track_id_stream_info_map.h b/third_party/libwebrtc/api/test/track_id_stream_info_map.h
new file mode 100644
index 0000000000..b016de57a9
--- /dev/null
+++ b/third_party/libwebrtc/api/test/track_id_stream_info_map.h
@@ -0,0 +1,44 @@
+/*
+ *  Copyright (c) 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_TEST_TRACK_ID_STREAM_INFO_MAP_H_
+#define API_TEST_TRACK_ID_STREAM_INFO_MAP_H_
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// Instances of `TrackIdStreamInfoMap` provide bookkeeping capabilities that
+// are useful to associate stats reports track_ids to the remote stream info.
+class TrackIdStreamInfoMap {
+ public:
+  struct StreamInfo {
+    std::string receiver_peer;
+    std::string stream_label;
+    std::string sync_group;
+  };
+
+  virtual ~TrackIdStreamInfoMap() = default;
+
+  // These methods must be called on the same thread where
+  // StatsObserverInterface::OnStatsReports is invoked.
+
+  // Precondition: `track_id` must be already mapped to stream info.
+  virtual StreamInfo GetStreamInfoFromTrackId(
+      absl::string_view track_id) const = 0;
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_TRACK_ID_STREAM_INFO_MAP_H_
diff --git a/third_party/libwebrtc/api/test/video/BUILD.gn b/third_party/libwebrtc/api/test/video/BUILD.gn
new file mode 100644
index 0000000000..d24ffa5fa6
--- /dev/null
+++ b/third_party/libwebrtc/api/test/video/BUILD.gn
@@ -0,0 +1,31 @@
+# Copyright (c) 2018 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.
+
+import("../../../webrtc.gni")
+
+rtc_library("function_video_factory") {
+  visibility = [ "*" ]
+  testonly = true
+  public = [
+    "function_video_decoder_factory.h",
+    "function_video_encoder_factory.h",
+  ]
+
+  deps = [
+    "../../../rtc_base:checks",
+    "../../video_codecs:video_codecs_api",
+  ]
+}
+
+rtc_library("video_frame_writer") {
+  visibility = [ "*" ]
+  testonly = true
+  public = [ "video_frame_writer.h" ]
+
+  deps = [ "../../video:video_frame" ]
+}
diff --git a/third_party/libwebrtc/api/test/video/function_video_decoder_factory.h b/third_party/libwebrtc/api/test/video/function_video_decoder_factory.h
new file mode 100644
index 0000000000..2145c71bff
--- /dev/null
+++ b/third_party/libwebrtc/api/test/video/function_video_decoder_factory.h
@@ -0,0 +1,65 @@
+/*
+ *  Copyright (c) 2018 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_TEST_VIDEO_FUNCTION_VIDEO_DECODER_FACTORY_H_
+#define API_TEST_VIDEO_FUNCTION_VIDEO_DECODER_FACTORY_H_
+
+#include <functional>
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "api/video_codecs/sdp_video_format.h"
+#include "api/video_codecs/video_decoder.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+namespace test {
+
+// A decoder factory producing decoders by calling a supplied create function.
+class FunctionVideoDecoderFactory final : public VideoDecoderFactory {
+ public:
+  explicit FunctionVideoDecoderFactory(
+      std::function<std::unique_ptr<VideoDecoder>()> create)
+      : create_([create = std::move(create)](const SdpVideoFormat&) {
+          return create();
+        }) {}
+  explicit FunctionVideoDecoderFactory(
+      std::function<std::unique_ptr<VideoDecoder>(const SdpVideoFormat&)>
+          create)
+      : create_(std::move(create)) {}
+  FunctionVideoDecoderFactory(
+      std::function<std::unique_ptr<VideoDecoder>()> create,
+      std::vector<SdpVideoFormat> sdp_video_formats)
+      : create_([create = std::move(create)](const SdpVideoFormat&) {
+          return create();
+        }),
+        sdp_video_formats_(std::move(sdp_video_formats)) {}
+
+  std::vector<SdpVideoFormat> GetSupportedFormats() const override {
+    return sdp_video_formats_;
+  }
+
+  std::unique_ptr<VideoDecoder> CreateVideoDecoder(
+      const SdpVideoFormat& format) override {
+    return create_(format);
+  }
+
+ private:
+  const std::function<std::unique_ptr<VideoDecoder>(const SdpVideoFormat&)>
+      create_;
+  const std::vector<SdpVideoFormat> sdp_video_formats_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_VIDEO_FUNCTION_VIDEO_DECODER_FACTORY_H_
diff --git a/third_party/libwebrtc/api/test/video/function_video_encoder_factory.h b/third_party/libwebrtc/api/test/video/function_video_encoder_factory.h
new file mode 100644
index 0000000000..98ece2bc94
--- /dev/null
+++ b/third_party/libwebrtc/api/test/video/function_video_encoder_factory.h
@@ -0,0 +1,60 @@
+/*
+ *  Copyright (c) 2018 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_TEST_VIDEO_FUNCTION_VIDEO_ENCODER_FACTORY_H_
+#define API_TEST_VIDEO_FUNCTION_VIDEO_ENCODER_FACTORY_H_
+
+#include <functional>
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "api/video_codecs/sdp_video_format.h"
+#include "api/video_codecs/video_encoder.h"
+#include "api/video_codecs/video_encoder_factory.h"
+#include "rtc_base/checks.h"
+
+namespace webrtc {
+namespace test {
+
+// An encoder factory producing encoders by calling a supplied create
+// function.
+class FunctionVideoEncoderFactory final : public VideoEncoderFactory {
+ public:
+  explicit FunctionVideoEncoderFactory(
+      std::function<std::unique_ptr<VideoEncoder>()> create)
+      : create_([create = std::move(create)](const SdpVideoFormat&) {
+          return create();
+        }) {}
+  explicit FunctionVideoEncoderFactory(
+      std::function<std::unique_ptr<VideoEncoder>(const SdpVideoFormat&)>
+          create)
+      : create_(std::move(create)) {}
+
+  // Unused by tests.
+  std::vector<SdpVideoFormat> GetSupportedFormats() const override {
+    RTC_DCHECK_NOTREACHED();
+    return {};
+  }
+
+  std::unique_ptr<VideoEncoder> CreateVideoEncoder(
+      const SdpVideoFormat& format) override {
+    return create_(format);
+  }
+
+ private:
+  const std::function<std::unique_ptr<VideoEncoder>(const SdpVideoFormat&)>
+      create_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_VIDEO_FUNCTION_VIDEO_ENCODER_FACTORY_H_
diff --git a/third_party/libwebrtc/api/test/video/video_frame_writer.h b/third_party/libwebrtc/api/test/video/video_frame_writer.h
new file mode 100644
index 0000000000..ac72534890
--- /dev/null
+++ b/third_party/libwebrtc/api/test/video/video_frame_writer.h
@@ -0,0 +1,37 @@
+/*
+ *  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 API_TEST_VIDEO_VIDEO_FRAME_WRITER_H_
+#define API_TEST_VIDEO_VIDEO_FRAME_WRITER_H_
+
+#include "api/video/video_frame.h"
+
+namespace webrtc {
+namespace test {
+
+class VideoFrameWriter {
+ public:
+  virtual ~VideoFrameWriter() = default;
+
+  // Writes `VideoFrame` and returns true if operation was successful, false
+  // otherwise.
+  //
+  // Calling `WriteFrame` after `Close` is not allowed.
+  virtual bool WriteFrame(const VideoFrame& frame) = 0;
+
+  // Closes writer and cleans up all resources. No invocations to `WriteFrame`
+  // are allowed after `Close` was invoked.
+  virtual void Close() = 0;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_VIDEO_VIDEO_FRAME_WRITER_H_
diff --git a/third_party/libwebrtc/api/test/video_codec_tester.h b/third_party/libwebrtc/api/test/video_codec_tester.h
new file mode 100644
index 0000000000..0eaaa1b895
--- /dev/null
+++ b/third_party/libwebrtc/api/test/video_codec_tester.h
@@ -0,0 +1,134 @@
+/*
+ *  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 API_TEST_VIDEO_CODEC_TESTER_H_
+#define API_TEST_VIDEO_CODEC_TESTER_H_
+
+#include <memory>
+
+#include "absl/functional/any_invocable.h"
+#include "api/test/videocodec_test_stats.h"
+#include "api/video/encoded_image.h"
+#include "api/video/resolution.h"
+#include "api/video/video_frame.h"
+
+namespace webrtc {
+namespace test {
+
+// Interface for a video codec tester. The interface provides minimalistic set
+// of data structures that enables implementation of decode-only, encode-only
+// and encode-decode tests.
+class VideoCodecTester {
+ public:
+  // Pacing settings for codec input.
+  struct PacingSettings {
+    enum PacingMode {
+      // Pacing is not used. Frames are sent to codec back-to-back.
+      kNoPacing,
+      // Pace with the rate equal to the target video frame rate. Pacing time is
+      // derived from RTP timestamp.
+      kRealTime,
+      // Pace with the explicitly provided rate.
+      kConstantRate,
+    };
+    PacingMode mode = PacingMode::kNoPacing;
+    // Pacing rate for `kConstantRate` mode.
+    Frequency constant_rate = Frequency::Zero();
+  };
+
+  struct DecoderSettings {
+    PacingSettings pacing;
+  };
+
+  struct EncoderSettings {
+    PacingSettings pacing;
+  };
+
+  virtual ~VideoCodecTester() = default;
+
+  // Interface for a raw video frames source.
+  class RawVideoSource {
+   public:
+    virtual ~RawVideoSource() = default;
+
+    // Returns next frame. If no more frames to pull, returns `absl::nullopt`.
+    // For analysis and pacing purposes, frame must have RTP timestamp set. The
+    // timestamp must represent the target video frame rate and be unique.
+    virtual absl::optional<VideoFrame> PullFrame() = 0;
+
+    // Returns early pulled frame with RTP timestamp equal to `timestamp_rtp`.
+    virtual VideoFrame GetFrame(uint32_t timestamp_rtp,
+                                Resolution resolution) = 0;
+  };
+
+  // Interface for a coded video frames source.
+  class CodedVideoSource {
+   public:
+    virtual ~CodedVideoSource() = default;
+
+    // Returns next frame. If no more frames to pull, returns `absl::nullopt`.
+    // For analysis and pacing purposes, frame must have RTP timestamp set. The
+    // timestamp must represent the target video frame rate and be unique.
+    virtual absl::optional<EncodedImage> PullFrame() = 0;
+  };
+
+  // Interface for a video encoder.
+  class Encoder {
+   public:
+    using EncodeCallback =
+        absl::AnyInvocable<void(const EncodedImage& encoded_frame)>;
+
+    virtual ~Encoder() = default;
+
+    virtual void Encode(const VideoFrame& frame, EncodeCallback callback) = 0;
+  };
+
+  // Interface for a video decoder.
+  class Decoder {
+   public:
+    using DecodeCallback =
+        absl::AnyInvocable<void(const VideoFrame& decoded_frame)>;
+
+    virtual ~Decoder() = default;
+
+    virtual void Decode(const EncodedImage& frame, DecodeCallback callback) = 0;
+  };
+
+  // Pulls coded video frames from `video_source` and passes them to `decoder`.
+  // Returns `VideoCodecTestStats` object that contains collected per-frame
+  // metrics.
+  virtual std::unique_ptr<VideoCodecTestStats> RunDecodeTest(
+      std::unique_ptr<CodedVideoSource> video_source,
+      std::unique_ptr<Decoder> decoder,
+      const DecoderSettings& decoder_settings) = 0;
+
+  // Pulls raw video frames from `video_source` and passes them to `encoder`.
+  // Returns `VideoCodecTestStats` object that contains collected per-frame
+  // metrics.
+  virtual std::unique_ptr<VideoCodecTestStats> RunEncodeTest(
+      std::unique_ptr<RawVideoSource> video_source,
+      std::unique_ptr<Encoder> encoder,
+      const EncoderSettings& encoder_settings) = 0;
+
+  // Pulls raw video frames from `video_source`, passes them to `encoder` and
+  // then passes encoded frames to `decoder`. Returns `VideoCodecTestStats`
+  // object that contains collected per-frame metrics.
+  virtual std::unique_ptr<VideoCodecTestStats> RunEncodeDecodeTest(
+      std::unique_ptr<RawVideoSource> video_source,
+      std::unique_ptr<Encoder> encoder,
+      std::unique_ptr<Decoder> decoder,
+      const EncoderSettings& encoder_settings,
+      const DecoderSettings& decoder_settings) = 0;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_VIDEO_CODEC_TESTER_H_
diff --git a/third_party/libwebrtc/api/test/video_quality_analyzer_interface.h b/third_party/libwebrtc/api/test/video_quality_analyzer_interface.h
new file mode 100644
index 0000000000..d35be8ca1a
--- /dev/null
+++ b/third_party/libwebrtc/api/test/video_quality_analyzer_interface.h
@@ -0,0 +1,165 @@
+/*
+ *  Copyright (c) 2018 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_TEST_VIDEO_QUALITY_ANALYZER_INTERFACE_H_
+#define API_TEST_VIDEO_QUALITY_ANALYZER_INTERFACE_H_
+
+#include <memory>
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "api/test/stats_observer_interface.h"
+#include "api/video/encoded_image.h"
+#include "api/video/video_frame.h"
+#include "api/video_codecs/video_encoder.h"
+
+namespace webrtc {
+
+// API is in development and can be changed without notice.
+
+// Base interface for video quality analyzer for peer connection level end-2-end
+// tests. Interface has only one abstract method, which have to return frame id.
+// Other methods have empty implementation by default, so user can override only
+// required parts.
+//
+// VideoQualityAnalyzerInterface will be injected into WebRTC pipeline on both
+// sides of the call. Here is video data flow in WebRTC pipeline
+//
+// Alice:
+//  ___________       ________       _________
+// |           |     |        |     |         |
+// |   Frame   |-(A)→| WebRTC |-(B)→| Video   |-(C)┐
+// | Generator |     | Stack  |     | Decoder |    |
+//  ¯¯¯¯¯¯¯¯¯¯¯       ¯¯¯¯¯¯¯¯       ¯¯¯¯¯¯¯¯¯     |
+//                                               __↓________
+//                                              | Transport |
+//                                              |     &     |
+//                                              |  Network  |
+//                                               ¯¯|¯¯¯¯¯¯¯¯
+// Bob:                                            |
+//  _______       ________       _________         |
+// |       |     |        |     |         |        |
+// | Video |←(F)-| WebRTC |←(E)-| Video   |←(D)----┘
+// | Sink  |     | Stack  |     | Decoder |
+//  ¯¯¯¯¯¯¯       ¯¯¯¯¯¯¯¯       ¯¯¯¯¯¯¯¯¯
+// The analyzer will be injected in all points from A to F.
+class VideoQualityAnalyzerInterface
+    : public webrtc_pc_e2e::StatsObserverInterface {
+ public:
+  // Contains extra statistic provided by video encoder.
+  struct EncoderStats {
+    std::string encoder_name = "unknown";
+    // TODO(hbos) https://crbug.com/webrtc/9547,
+    // https://crbug.com/webrtc/11443: improve stats API to make available
+    // there.
+    uint32_t target_encode_bitrate = 0;
+    // Encoder quantizer value.
+    int qp = -1;
+  };
+  // Contains extra statistic provided by video decoder.
+  struct DecoderStats {
+    std::string decoder_name = "unknown";
+    // Decode time provided by decoder itself. If decoder doesn’t produce such
+    // information can be omitted.
+    absl::optional<int32_t> decode_time_ms = absl::nullopt;
+  };
+
+  ~VideoQualityAnalyzerInterface() override = default;
+
+  // Will be called by framework before test.
+  // `test_case_name` is name of test case, that should be used to report all
+  // video metrics.
+  // `threads_count` is number of threads that analyzer can use for heavy
+  // calculations. Analyzer can perform simple calculations on the calling
+  // thread in each method, but should remember, that it is the same thread,
+  // that is used in video pipeline.
+  virtual void Start(std::string test_case_name,
+                     rtc::ArrayView<const std::string> peer_names,
+                     int max_threads_count) {}
+
+  // Will be called when frame was generated from the input stream.
+  // `peer_name` is name of the peer on which side frame was captured.
+  // Returns frame id, that will be set by framework to the frame.
+  virtual uint16_t OnFrameCaptured(absl::string_view peer_name,
+                                   const std::string& stream_label,
+                                   const VideoFrame& frame) = 0;
+  // Will be called before calling the encoder.
+  // `peer_name` is name of the peer on which side frame came to encoder.
+  virtual void OnFramePreEncode(absl::string_view peer_name,
+                                const VideoFrame& frame) {}
+  // Will be called for each EncodedImage received from encoder. Single
+  // VideoFrame can produce multiple EncodedImages. Each encoded image will
+  // have id from VideoFrame.
+  // `peer_name` is name of the peer on which side frame was encoded.
+  virtual void OnFrameEncoded(absl::string_view peer_name,
+                              uint16_t frame_id,
+                              const EncodedImage& encoded_image,
+                              const EncoderStats& stats,
+                              bool discarded) {}
+  // Will be called for each frame dropped by encoder.
+  // `peer_name` is name of the peer on which side frame drop was detected.
+  virtual void OnFrameDropped(absl::string_view peer_name,
+                              EncodedImageCallback::DropReason reason) {}
+  // Will be called before calling the decoder.
+  // `peer_name` is name of the peer on which side frame was received.
+  virtual void OnFramePreDecode(absl::string_view peer_name,
+                                uint16_t frame_id,
+                                const EncodedImage& encoded_image) {}
+  // Will be called after decoding the frame.
+  // `peer_name` is name of the peer on which side frame was decoded.
+  virtual void OnFrameDecoded(absl::string_view peer_name,
+                              const VideoFrame& frame,
+                              const DecoderStats& stats) {}
+  // Will be called when frame will be obtained from PeerConnection stack.
+  // `peer_name` is name of the peer on which side frame was rendered.
+  virtual void OnFrameRendered(absl::string_view peer_name,
+                               const VideoFrame& frame) {}
+  // Will be called if encoder return not WEBRTC_VIDEO_CODEC_OK.
+  // All available codes are listed in
+  // modules/video_coding/include/video_error_codes.h
+  // `peer_name` is name of the peer on which side error acquired.
+  virtual void OnEncoderError(absl::string_view peer_name,
+                              const VideoFrame& frame,
+                              int32_t error_code) {}
+  // Will be called if decoder return not WEBRTC_VIDEO_CODEC_OK.
+  // All available codes are listed in
+  // modules/video_coding/include/video_error_codes.h
+  // `peer_name` is name of the peer on which side error acquired.
+  virtual void OnDecoderError(absl::string_view peer_name,
+                              uint16_t frame_id,
+                              int32_t error_code,
+                              const DecoderStats& stats) {}
+  // Will be called every time new stats reports are available for the
+  // Peer Connection identified by `pc_label`.
+  void OnStatsReports(
+      absl::string_view pc_label,
+      const rtc::scoped_refptr<const RTCStatsReport>& report) override {}
+
+  // Will be called before test adds new participant in the middle of a call.
+  virtual void RegisterParticipantInCall(absl::string_view peer_name) {}
+  // Will be called after test removed existing participant in the middle of the
+  // call.
+  virtual void UnregisterParticipantInCall(absl::string_view peer_name) {}
+
+  // Tells analyzer that analysis complete and it should calculate final
+  // statistics.
+  virtual void Stop() {}
+
+  // Returns the last stream where this frame was captured. It means that if
+  // frame ids space wraps around, then stream label for frame id may change.
+  // It will crash, if the specified `frame_id` wasn't captured.
+  virtual std::string GetStreamLabel(uint16_t frame_id) = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_VIDEO_QUALITY_ANALYZER_INTERFACE_H_
diff --git a/third_party/libwebrtc/api/test/video_quality_test_fixture.h b/third_party/libwebrtc/api/test/video_quality_test_fixture.h
new file mode 100644
index 0000000000..b45faef286
--- /dev/null
+++ b/third_party/libwebrtc/api/test/video_quality_test_fixture.h
@@ -0,0 +1,143 @@
+/*
+ *  Copyright (c) 2018 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_TEST_VIDEO_QUALITY_TEST_FIXTURE_H_
+#define API_TEST_VIDEO_QUALITY_TEST_FIXTURE_H_
+
+#include <map>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "api/fec_controller.h"
+#include "api/media_types.h"
+#include "api/network_state_predictor.h"
+#include "api/test/simulated_network.h"
+#include "api/transport/bitrate_settings.h"
+#include "api/transport/network_control.h"
+#include "api/video_codecs/sdp_video_format.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "api/video_codecs/video_encoder_factory.h"
+#include "video/config/video_encoder_config.h"
+
+namespace webrtc {
+
+class VideoQualityTestFixtureInterface {
+ public:
+  // Parameters are grouped into smaller structs to make it easier to set
+  // the desired elements and skip unused.
+  struct Params {
+    struct CallConfig {
+      bool send_side_bwe = false;
+      bool generic_descriptor = false;
+      bool dependency_descriptor = false;
+      BitrateConstraints call_bitrate_config;
+      int num_thumbnails = 0;
+      // Indicates if secondary_(video|ss|screenshare) structures are used.
+      bool dual_video = false;
+    } call;
+    struct Video {
+      bool enabled = false;
+      size_t width = 640;
+      size_t height = 480;
+      int32_t fps = 30;
+      int min_bitrate_bps = 50;
+      int target_bitrate_bps = 800;
+      int max_bitrate_bps = 800;
+      bool suspend_below_min_bitrate = false;
+      std::string codec = "VP8";
+      int num_temporal_layers = 1;
+      int selected_tl = -1;
+      int min_transmit_bps = 0;
+      bool ulpfec = false;
+      bool flexfec = false;
+      bool automatic_scaling = false;
+      std::string clip_path;  // "Generator" to generate frames instead.
+      size_t capture_device_index = 0;
+      SdpVideoFormat::Parameters sdp_params;
+      double encoder_overshoot_factor = 0.0;
+    } video[2];
+    struct Audio {
+      bool enabled = false;
+      bool sync_video = false;
+      bool dtx = false;
+      bool use_real_adm = false;
+      absl::optional<std::string> ana_config;
+    } audio;
+    struct Screenshare {
+      bool enabled = false;
+      bool generate_slides = false;
+      int32_t slide_change_interval = 10;
+      int32_t scroll_duration = 0;
+      std::vector<std::string> slides;
+    } screenshare[2];
+    struct Analyzer {
+      std::string test_label;
+      double avg_psnr_threshold = 0.0;  // (*)
+      double avg_ssim_threshold = 0.0;  // (*)
+      int test_durations_secs = 0;
+      std::string graph_data_output_filename;
+      std::string graph_title;
+    } analyzer;
+    // Config for default simulation implementation. Must be nullopt if
+    // `sender_network` and `receiver_network` in InjectionComponents are
+    // non-null. May be nullopt even if `sender_network` and `receiver_network`
+    // are null; in that case, a default config will be used.
+    absl::optional<BuiltInNetworkBehaviorConfig> config;
+    struct SS {                          // Spatial scalability.
+      std::vector<VideoStream> streams;  // If empty, one stream is assumed.
+      size_t selected_stream = 0;
+      int num_spatial_layers = 0;
+      int selected_sl = -1;
+      InterLayerPredMode inter_layer_pred = InterLayerPredMode::kOn;
+      // If empty, bitrates are generated in VP9Impl automatically.
+      std::vector<SpatialLayer> spatial_layers;
+      // If set, default parameters will be used instead of `streams`.
+      bool infer_streams = false;
+    } ss[2];
+    struct Logging {
+      std::string rtc_event_log_name;
+      std::string rtp_dump_name;
+      std::string encoded_frame_base_path;
+    } logging;
+  };
+
+  // Contains objects, that will be injected on different layers of test
+  // framework to override the behavior of system parts.
+  struct InjectionComponents {
+    InjectionComponents();
+    ~InjectionComponents();
+
+    // Simulations of sender and receiver networks. They must either both be
+    // null (in which case `config` from Params is used), or both be non-null
+    // (in which case `config` from Params must be nullopt).
+    std::unique_ptr<NetworkBehaviorInterface> sender_network;
+    std::unique_ptr<NetworkBehaviorInterface> receiver_network;
+
+    std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory;
+    std::unique_ptr<VideoEncoderFactory> video_encoder_factory;
+    std::unique_ptr<VideoDecoderFactory> video_decoder_factory;
+    std::unique_ptr<NetworkStatePredictorFactoryInterface>
+        network_state_predictor_factory;
+    std::unique_ptr<NetworkControllerFactoryInterface>
+        network_controller_factory;
+  };
+
+  virtual ~VideoQualityTestFixtureInterface() = default;
+
+  virtual void RunWithAnalyzer(const Params& params) = 0;
+  virtual void RunWithRenderers(const Params& params) = 0;
+
+  virtual const std::map<uint8_t, webrtc::MediaType>& payload_type_map() = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_VIDEO_QUALITY_TEST_FIXTURE_H_
diff --git a/third_party/libwebrtc/api/test/videocodec_test_fixture.h b/third_party/libwebrtc/api/test/videocodec_test_fixture.h
new file mode 100644
index 0000000000..dbf20993e2
--- /dev/null
+++ b/third_party/libwebrtc/api/test/videocodec_test_fixture.h
@@ -0,0 +1,177 @@
+/*
+ *  Copyright (c) 2018 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_TEST_VIDEOCODEC_TEST_FIXTURE_H_
+#define API_TEST_VIDEOCODEC_TEST_FIXTURE_H_
+
+#include <string>
+#include <vector>
+
+#include "api/test/videocodec_test_stats.h"
+#include "api/video_codecs/h264_profile_level_id.h"
+#include "api/video_codecs/video_decoder_factory.h"
+#include "api/video_codecs/video_encoder_factory.h"
+#include "modules/video_coding/include/video_codec_interface.h"
+
+namespace webrtc {
+namespace test {
+
+// Rates for the encoder and the frame number when to apply profile.
+struct RateProfile {
+  size_t target_kbps;
+  double input_fps;
+  size_t frame_num;
+};
+
+struct RateControlThresholds {
+  double max_avg_bitrate_mismatch_percent;
+  double max_time_to_reach_target_bitrate_sec;
+  // TODO(ssilkin): Use absolute threshold for framerate.
+  double max_avg_framerate_mismatch_percent;
+  double max_avg_buffer_level_sec;
+  double max_max_key_frame_delay_sec;
+  double max_max_delta_frame_delay_sec;
+  size_t max_num_spatial_resizes;
+  size_t max_num_key_frames;
+};
+
+struct QualityThresholds {
+  double min_avg_psnr;
+  double min_min_psnr;
+  double min_avg_ssim;
+  double min_min_ssim;
+};
+
+struct BitstreamThresholds {
+  size_t max_max_nalu_size_bytes;
+};
+
+// NOTE: This class is still under development and may change without notice.
+class VideoCodecTestFixture {
+ public:
+  class EncodedFrameChecker {
+   public:
+    virtual ~EncodedFrameChecker() = default;
+    virtual void CheckEncodedFrame(VideoCodecType codec,
+                                   const EncodedImage& encoded_frame) const = 0;
+  };
+
+  struct Config {
+    Config();
+    void SetCodecSettings(std::string codec_name,
+                          size_t num_simulcast_streams,
+                          size_t num_spatial_layers,
+                          size_t num_temporal_layers,
+                          bool denoising_on,
+                          bool frame_dropper_on,
+                          bool spatial_resize_on,
+                          size_t width,
+                          size_t height);
+
+    size_t NumberOfCores() const;
+    size_t NumberOfTemporalLayers() const;
+    size_t NumberOfSpatialLayers() const;
+    size_t NumberOfSimulcastStreams() const;
+
+    std::string ToString() const;
+    std::string CodecName() const;
+
+    // Name of this config, to be used for accounting by the test runner.
+    std::string test_name;
+
+    // Plain name of YUV file to process without file extension.
+    std::string filename;
+    // Dimensions of test clip. Falls back to (codec_settings.width/height) if
+    // not set.
+    absl::optional<int> clip_width;
+    absl::optional<int> clip_height;
+    // Framerate of input clip. Defaults to 30fps if not set.
+    absl::optional<int> clip_fps;
+
+    // The resolution at which psnr/ssim comparisons should be made. Frames
+    // will be scaled to this size if different.
+    absl::optional<int> reference_width;
+    absl::optional<int> reference_height;
+
+    // File to process. This must be a video file in the YUV format.
+    std::string filepath;
+
+    // Number of frames to process.
+    size_t num_frames = 0;
+
+    // Bitstream constraints.
+    size_t max_payload_size_bytes = 1440;
+
+    // Should we decode the encoded frames?
+    bool decode = true;
+
+    // Force the encoder and decoder to use a single core for processing.
+    bool use_single_core = false;
+
+    // Should cpu usage be measured?
+    // If set to true, the encoding will run in real-time.
+    bool measure_cpu = false;
+
+    // Simulate frames arriving in real-time by adding delays between frames.
+    bool encode_in_real_time = false;
+
+    // Codec settings to use.
+    VideoCodec codec_settings;
+
+    // Name of the codec being tested.
+    std::string codec_name;
+
+    // Encoder and decoder format and parameters. If provided, format is used to
+    // instantiate the codec. If not provided, the test creates and uses the
+    // default `SdpVideoFormat` based on `codec_name`.
+    // Encoder and decoder name (`SdpVideoFormat::name`) should be the same as
+    // `codec_name`.
+    absl::optional<SdpVideoFormat> encoder_format;
+    absl::optional<SdpVideoFormat> decoder_format;
+
+    // H.264 specific settings.
+    struct H264CodecSettings {
+      H264Profile profile = H264Profile::kProfileConstrainedBaseline;
+      H264PacketizationMode packetization_mode =
+          H264PacketizationMode::NonInterleaved;
+    } h264_codec_settings;
+
+    // Custom checker that will be called for each frame.
+    const EncodedFrameChecker* encoded_frame_checker = nullptr;
+
+    // Print out frame level stats.
+    bool print_frame_level_stats = false;
+
+    // Path to a directory where encoded or/and decoded video should be saved.
+    std::string output_path;
+
+    // Should video be saved persistently to disk for post-run visualization?
+    struct VisualizationParams {
+      bool save_encoded_ivf = false;
+      bool save_decoded_y4m = false;
+    } visualization_params;
+
+    // Enables quality analysis for dropped frames.
+    bool analyze_quality_of_dropped_frames = false;
+  };
+
+  virtual ~VideoCodecTestFixture() = default;
+
+  virtual void RunTest(const std::vector<RateProfile>& rate_profiles,
+                       const std::vector<RateControlThresholds>* rc_thresholds,
+                       const std::vector<QualityThresholds>* quality_thresholds,
+                       const BitstreamThresholds* bs_thresholds) = 0;
+  virtual VideoCodecTestStats& GetStats() = 0;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_VIDEOCODEC_TEST_FIXTURE_H_
diff --git a/third_party/libwebrtc/api/test/videocodec_test_stats.cc b/third_party/libwebrtc/api/test/videocodec_test_stats.cc
new file mode 100644
index 0000000000..f082b1e935
--- /dev/null
+++ b/third_party/libwebrtc/api/test/videocodec_test_stats.cc
@@ -0,0 +1,121 @@
+/*
+ *  Copyright (c) 2018 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.
+ */
+
+#include "api/test/videocodec_test_stats.h"
+
+#include "rtc_base/strings/string_builder.h"
+
+namespace webrtc {
+namespace test {
+
+VideoCodecTestStats::FrameStatistics::FrameStatistics(size_t frame_number,
+                                                      size_t rtp_timestamp,
+                                                      size_t spatial_idx)
+    : frame_number(frame_number),
+      rtp_timestamp(rtp_timestamp),
+      spatial_idx(spatial_idx) {}
+
+std::string VideoCodecTestStats::FrameStatistics::ToString() const {
+  rtc::StringBuilder ss;
+  for (const auto& entry : ToMap()) {
+    if (ss.size() > 0) {
+      ss << " ";
+    }
+    ss << entry.first << " " << entry.second;
+  }
+  return ss.Release();
+}
+
+std::map<std::string, std::string> VideoCodecTestStats::FrameStatistics::ToMap()
+    const {
+  std::map<std::string, std::string> map;
+  map["frame_number"] = std::to_string(frame_number);
+  map["decoded_width"] = std::to_string(decoded_width);
+  map["decoded_height"] = std::to_string(decoded_height);
+  map["spatial_idx"] = std::to_string(spatial_idx);
+  map["temporal_idx"] = std::to_string(temporal_idx);
+  map["inter_layer_predicted"] = std::to_string(inter_layer_predicted);
+  map["non_ref_for_inter_layer_pred"] =
+      std::to_string(non_ref_for_inter_layer_pred);
+  map["frame_type"] = std::to_string(static_cast<int>(frame_type));
+  map["length_bytes"] = std::to_string(length_bytes);
+  map["qp"] = std::to_string(qp);
+  map["psnr"] = std::to_string(psnr);
+  map["psnr_y"] = std::to_string(psnr_y);
+  map["psnr_u"] = std::to_string(psnr_u);
+  map["psnr_v"] = std::to_string(psnr_v);
+  map["ssim"] = std::to_string(ssim);
+  map["encode_time_us"] = std::to_string(encode_time_us);
+  map["decode_time_us"] = std::to_string(decode_time_us);
+  map["rtp_timestamp"] = std::to_string(rtp_timestamp);
+  map["target_bitrate_kbps"] = std::to_string(target_bitrate_kbps);
+  map["target_framerate_fps"] = std::to_string(target_framerate_fps);
+  return map;
+}
+
+std::string VideoCodecTestStats::VideoStatistics::ToString(
+    std::string prefix) const {
+  rtc::StringBuilder ss;
+  for (const auto& entry : ToMap()) {
+    if (ss.size() > 0) {
+      ss << "\n";
+    }
+    ss << prefix << entry.first << ": " << entry.second;
+  }
+  return ss.Release();
+}
+
+std::map<std::string, std::string> VideoCodecTestStats::VideoStatistics::ToMap()
+    const {
+  std::map<std::string, std::string> map;
+  map["target_bitrate_kbps"] = std::to_string(target_bitrate_kbps);
+  map["input_framerate_fps"] = std::to_string(input_framerate_fps);
+  map["spatial_idx"] = std::to_string(spatial_idx);
+  map["temporal_idx"] = std::to_string(temporal_idx);
+  map["width"] = std::to_string(width);
+  map["height"] = std::to_string(height);
+  map["length_bytes"] = std::to_string(length_bytes);
+  map["bitrate_kbps"] = std::to_string(bitrate_kbps);
+  map["framerate_fps"] = std::to_string(framerate_fps);
+  map["enc_speed_fps"] = std::to_string(enc_speed_fps);
+  map["dec_speed_fps"] = std::to_string(dec_speed_fps);
+  map["avg_encode_latency_sec"] = std::to_string(avg_encode_latency_sec);
+  map["max_encode_latency_sec"] = std::to_string(max_encode_latency_sec);
+  map["avg_decode_latency_sec"] = std::to_string(avg_decode_latency_sec);
+  map["max_decode_latency_sec"] = std::to_string(max_decode_latency_sec);
+  map["avg_delay_sec"] = std::to_string(avg_delay_sec);
+  map["max_key_frame_delay_sec"] = std::to_string(max_key_frame_delay_sec);
+  map["max_delta_frame_delay_sec"] = std::to_string(max_delta_frame_delay_sec);
+  map["time_to_reach_target_bitrate_sec"] =
+      std::to_string(time_to_reach_target_bitrate_sec);
+  map["avg_bitrate_mismatch_pct"] = std::to_string(avg_bitrate_mismatch_pct);
+  map["avg_framerate_mismatch_pct"] =
+      std::to_string(avg_framerate_mismatch_pct);
+  map["avg_key_frame_size_bytes"] = std::to_string(avg_key_frame_size_bytes);
+  map["avg_delta_frame_size_bytes"] =
+      std::to_string(avg_delta_frame_size_bytes);
+  map["avg_qp"] = std::to_string(avg_qp);
+  map["avg_psnr"] = std::to_string(avg_psnr);
+  map["min_psnr"] = std::to_string(min_psnr);
+  map["avg_ssim"] = std::to_string(avg_ssim);
+  map["min_ssim"] = std::to_string(min_ssim);
+  map["num_input_frames"] = std::to_string(num_input_frames);
+  map["num_encoded_frames"] = std::to_string(num_encoded_frames);
+  map["num_decoded_frames"] = std::to_string(num_decoded_frames);
+  map["num_dropped_frames"] =
+      std::to_string(num_input_frames - num_encoded_frames);
+  map["num_key_frames"] = std::to_string(num_key_frames);
+  map["num_spatial_resizes"] = std::to_string(num_spatial_resizes);
+  map["max_nalu_size_bytes"] = std::to_string(max_nalu_size_bytes);
+  return map;
+}
+
+}  // namespace test
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/api/test/videocodec_test_stats.h b/third_party/libwebrtc/api/test/videocodec_test_stats.h
new file mode 100644
index 0000000000..12c60638db
--- /dev/null
+++ b/third_party/libwebrtc/api/test/videocodec_test_stats.h
@@ -0,0 +1,156 @@
+/*
+ *  Copyright (c) 2018 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_TEST_VIDEOCODEC_TEST_STATS_H_
+#define API_TEST_VIDEOCODEC_TEST_STATS_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/units/data_rate.h"
+#include "api/units/frequency.h"
+#include "api/video/video_frame_type.h"
+
+namespace webrtc {
+namespace test {
+
+// Statistics for a sequence of processed frames. This class is not thread safe.
+class VideoCodecTestStats {
+ public:
+  // Statistics for one processed frame.
+  struct FrameStatistics {
+    FrameStatistics(size_t frame_number,
+                    size_t rtp_timestamp,
+                    size_t spatial_idx);
+
+    std::string ToString() const;
+
+    // Returns name -> value text map of frame statistics.
+    std::map<std::string, std::string> ToMap() const;
+
+    size_t frame_number = 0;
+    size_t rtp_timestamp = 0;
+
+    // Encoding.
+    int64_t encode_start_ns = 0;
+    int encode_return_code = 0;
+    bool encoding_successful = false;
+    size_t encode_time_us = 0;
+    size_t target_bitrate_kbps = 0;
+    double target_framerate_fps = 0.0;
+    size_t length_bytes = 0;
+    VideoFrameType frame_type = VideoFrameType::kVideoFrameDelta;
+
+    // Layering.
+    size_t spatial_idx = 0;
+    size_t temporal_idx = 0;
+    bool inter_layer_predicted = false;
+    bool non_ref_for_inter_layer_pred = true;
+
+    // H264 specific.
+    size_t max_nalu_size_bytes = 0;
+
+    // Decoding.
+    int64_t decode_start_ns = 0;
+    int decode_return_code = 0;
+    bool decoding_successful = false;
+    size_t decode_time_us = 0;
+    size_t decoded_width = 0;
+    size_t decoded_height = 0;
+
+    // Quantization.
+    int qp = -1;
+
+    // Quality.
+    bool quality_analysis_successful = false;
+    float psnr_y = 0.0f;
+    float psnr_u = 0.0f;
+    float psnr_v = 0.0f;
+    float psnr = 0.0f;  // 10 * log10(255^2 / (mse_y + mse_u + mse_v)).
+    float ssim = 0.0f;  // 0.8 * ssim_y + 0.1 * (ssim_u + ssim_v).
+  };
+
+  struct VideoStatistics {
+    std::string ToString(std::string prefix) const;
+
+    // Returns name -> value text map of video statistics.
+    std::map<std::string, std::string> ToMap() const;
+
+    size_t target_bitrate_kbps = 0;
+    float input_framerate_fps = 0.0f;
+
+    size_t spatial_idx = 0;
+    size_t temporal_idx = 0;
+
+    size_t width = 0;
+    size_t height = 0;
+
+    size_t length_bytes = 0;
+    size_t bitrate_kbps = 0;
+    float framerate_fps = 0;
+
+    float enc_speed_fps = 0.0f;
+    float dec_speed_fps = 0.0f;
+
+    float avg_encode_latency_sec = 0.0f;
+    float max_encode_latency_sec = 0.0f;
+    float avg_decode_latency_sec = 0.0f;
+    float max_decode_latency_sec = 0.0f;
+
+    float avg_delay_sec = 0.0f;
+    float max_key_frame_delay_sec = 0.0f;
+    float max_delta_frame_delay_sec = 0.0f;
+    float time_to_reach_target_bitrate_sec = 0.0f;
+    float avg_bitrate_mismatch_pct = 0.0f;
+    float avg_framerate_mismatch_pct = 0.0f;
+
+    float avg_key_frame_size_bytes = 0.0f;
+    float avg_delta_frame_size_bytes = 0.0f;
+    float avg_qp = 0.0f;
+
+    float avg_psnr_y = 0.0f;
+    float avg_psnr_u = 0.0f;
+    float avg_psnr_v = 0.0f;
+    float avg_psnr = 0.0f;
+    float min_psnr = 0.0f;
+    float avg_ssim = 0.0f;
+    float min_ssim = 0.0f;
+
+    size_t num_input_frames = 0;
+    size_t num_encoded_frames = 0;
+    size_t num_decoded_frames = 0;
+    size_t num_key_frames = 0;
+    size_t num_spatial_resizes = 0;
+    size_t max_nalu_size_bytes = 0;
+  };
+
+  virtual ~VideoCodecTestStats() = default;
+
+  virtual std::vector<FrameStatistics> GetFrameStatistics() const = 0;
+
+  virtual std::vector<VideoStatistics> SliceAndCalcLayerVideoStatistic(
+      size_t first_frame_num,
+      size_t last_frame_num) = 0;
+
+  virtual VideoStatistics CalcVideoStatistic(size_t first_frame,
+                                             size_t last_frame,
+                                             DataRate target_bitrate,
+                                             Frequency target_framerate) = 0;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // API_TEST_VIDEOCODEC_TEST_STATS_H_