diff --git a/test/BUILD.gn b/test/BUILD.gn
index 01539d5..6acea6e 100644
--- a/test/BUILD.gn
+++ b/test/BUILD.gn
@@ -282,8 +282,6 @@
   visibility = [ "*" ]
   testonly = true
   sources = [
-    "testsupport/perf_result_reporter.cc",
-    "testsupport/perf_result_reporter.h",
     "testsupport/perf_test.cc",
     "testsupport/perf_test.h",
     "testsupport/perf_test_histogram_writer.h",
diff --git a/test/testsupport/perf_result_reporter.cc b/test/testsupport/perf_result_reporter.cc
deleted file mode 100644
index 436d1ba..0000000
--- a/test/testsupport/perf_result_reporter.cc
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
- *  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 "test/testsupport/perf_result_reporter.h"
-
-#include <vector>
-
-#include "absl/strings/string_view.h"
-
-namespace {
-
-// These characters mess with either the stdout parsing or the dashboard itself.
-const std::vector<std::string>& InvalidCharacters() {
-  static const std::vector<std::string> kInvalidCharacters({"/", ":", "="});
-
-  return kInvalidCharacters;
-}
-
-void CheckForInvalidCharacters(absl::string_view str) {
-  for (const auto& invalid : InvalidCharacters()) {
-    RTC_CHECK(str.find(invalid) == std::string::npos)
-        << "Given invalid character for perf names '" << invalid << "'";
-  }
-}
-
-}  // namespace
-
-namespace webrtc {
-namespace test {
-
-namespace {
-
-// For now, mark all tests as "not important". This distinction mostly goes away
-// in histograms anyway.
-const bool kNotImportant = false;
-
-std::string UnitToString(Unit unit) {
-  // Down the line, we should convert directly from Unit to the histogram.proto
-  // enum values. We need to convert to strings until all uses of perf_test.h
-  // have been eliminated. We're not using the proto enum directly in the .h of
-  // this file because we don't want to limit the exposure of the proto.
-  //
-  // Keep this list up to date with kJsonToProtoUnit in histogram.cc in the
-  // Catapult repo.
-  switch (unit) {
-    case Unit::kMs:
-      return "ms";
-    case Unit::kMsBestFitFormat:
-      return "msBestFitFormat";
-    case Unit::kMsTs:
-      return "tsMs";
-    case Unit::kNPercent:
-      return "n%";
-    case Unit::kSizeInBytes:
-      return "sizeInBytes";
-    case Unit::kBytesPerSecond:
-      return "bytesPerSecond";
-    case Unit::kHertz:
-      return "Hz";
-    case Unit::kUnitless:
-      return "unitless";
-    case Unit::kCount:
-      return "count";
-    case Unit::kSigma:
-      return "sigma";
-    default:
-      RTC_DCHECK_NOTREACHED() << "Unknown unit " << unit;
-      return "unitless";
-  }
-}
-
-}  // namespace
-
-PerfResultReporter::PerfResultReporter(absl::string_view metric_basename,
-                                       absl::string_view story_name)
-    : metric_basename_(metric_basename), story_name_(story_name) {
-  CheckForInvalidCharacters(metric_basename_);
-  CheckForInvalidCharacters(story_name_);
-}
-
-PerfResultReporter::~PerfResultReporter() = default;
-
-void PerfResultReporter::RegisterMetric(absl::string_view metric_suffix,
-                                        Unit unit) {
-  RegisterMetric(metric_suffix, unit, ImproveDirection::kNone);
-}
-void PerfResultReporter::RegisterMetric(absl::string_view metric_suffix,
-                                        Unit unit,
-                                        ImproveDirection improve_direction) {
-  CheckForInvalidCharacters(metric_suffix);
-  std::string metric(metric_suffix);
-  RTC_CHECK(metric_map_.count(metric) == 0);
-  metric_map_.insert({std::move(metric), {unit, improve_direction}});
-}
-
-void PerfResultReporter::AddResult(absl::string_view metric_suffix,
-                                   size_t value) const {
-  auto info = GetMetricInfoOrFail(metric_suffix);
-
-  PrintResult(metric_basename_, metric_suffix, story_name_, value,
-              UnitToString(info.unit), kNotImportant, info.improve_direction);
-}
-
-void PerfResultReporter::AddResult(absl::string_view metric_suffix,
-                                   double value) const {
-  auto info = GetMetricInfoOrFail(metric_suffix);
-
-  PrintResult(metric_basename_, metric_suffix, story_name_, value,
-              UnitToString(info.unit), kNotImportant, info.improve_direction);
-}
-
-void PerfResultReporter::AddResultList(
-    absl::string_view metric_suffix,
-    rtc::ArrayView<const double> values) const {
-  auto info = GetMetricInfoOrFail(metric_suffix);
-
-  PrintResultList(metric_basename_, metric_suffix, story_name_, values,
-                  UnitToString(info.unit), kNotImportant,
-                  info.improve_direction);
-}
-
-void PerfResultReporter::AddResultMeanAndError(absl::string_view metric_suffix,
-                                               const double mean,
-                                               const double error) {
-  auto info = GetMetricInfoOrFail(metric_suffix);
-
-  PrintResultMeanAndError(metric_basename_, metric_suffix, story_name_, mean,
-                          error, UnitToString(info.unit), kNotImportant,
-                          info.improve_direction);
-}
-
-absl::optional<MetricInfo> PerfResultReporter::GetMetricInfo(
-    absl::string_view metric_suffix) const {
-  auto iter = metric_map_.find(std::string(metric_suffix));
-  if (iter == metric_map_.end()) {
-    return absl::optional<MetricInfo>();
-  }
-
-  return absl::optional<MetricInfo>(iter->second);
-}
-
-MetricInfo PerfResultReporter::GetMetricInfoOrFail(
-    absl::string_view metric_suffix) const {
-  absl::optional<MetricInfo> info = GetMetricInfo(metric_suffix);
-  RTC_CHECK(info.has_value())
-      << "Attempted to use unregistered metric " << metric_suffix;
-  return *info;
-}
-
-}  // namespace test
-}  // namespace webrtc
diff --git a/test/testsupport/perf_result_reporter.h b/test/testsupport/perf_result_reporter.h
deleted file mode 100644
index a157234..0000000
--- a/test/testsupport/perf_result_reporter.h
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- *  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 TEST_TESTSUPPORT_PERF_RESULT_REPORTER_H_
-#define TEST_TESTSUPPORT_PERF_RESULT_REPORTER_H_
-
-#include <string>
-#include <unordered_map>
-
-#include "absl/strings/string_view.h"
-#include "absl/types/optional.h"
-#include "api/array_view.h"
-#include "test/testsupport/perf_test.h"
-
-namespace webrtc {
-namespace test {
-
-// These match the units in histogram.proto (in third_party/catapult).
-enum class Unit {
-  kMs,
-  kMsBestFitFormat,
-  kMsTs,
-  kNPercent,
-  kSizeInBytes,
-  kBytesPerSecond,
-  kHertz,
-  kUnitless,
-  kCount,
-  kSigma,
-};
-
-struct MetricInfo {
-  Unit unit;
-  ImproveDirection improve_direction;
-};
-
-// A helper class for using the perf test printing functions safely, as
-// otherwise it's easy to accidentally mix up arguments to produce usable but
-// malformed perf data. See https://crbug.com/923564.
-//
-// Sample usage:
-// auto reporter = PerfResultReporter("ramp_up_time", "bwe_15s");
-// reporter.RegisterImportantMetric(
-//     "_turn_over_tcp", Unit::kMs, ImproveDirection::kBiggerIsBetter);
-// reporter.RegisterImportantMetric("_cpu_time", Unit::kMs);
-// ...
-// reporter.AddResult("turn_over_tcp", GetTurnOverTcpTime());
-// reporter.AddResult("turn_over_udp", GetTurnOverUdpTime());
-//
-// This will show in the dashboard as
-// (test binary name) > (bot) > ramp_up_time_turn_over_tcp > bwe_15s.
-// (test binary name) > (bot) > ramp_up_time_turn_over_udp > bwe_15s.
-//
-// If you add more reporters that cover other user stories, they will show up
-// as separate subtests (e.g. next to bwe_15s).
-class PerfResultReporter {
- public:
-  PerfResultReporter(absl::string_view metric_basename,
-                     absl::string_view story_name);
-  ~PerfResultReporter();
-
-  void RegisterMetric(absl::string_view metric_suffix, Unit unit);
-  void RegisterMetric(absl::string_view metric_suffix,
-                      Unit unit,
-                      ImproveDirection improve_direction);
-  void AddResult(absl::string_view metric_suffix, size_t value) const;
-  void AddResult(absl::string_view metric_suffix, double value) const;
-
-  void AddResultList(absl::string_view metric_suffix,
-                     rtc::ArrayView<const double> values) const;
-
-  // Users should prefer AddResultList if possible, as otherwise the min/max
-  // values reported on the perf dashboard aren't useful.
-  // `mean_and_error` should be a comma-separated string of mean then
-  // error/stddev, e.g. "2.4,0.5".
-  void AddResultMeanAndError(absl::string_view metric_suffix,
-                             double mean,
-                             double error);
-
-  // Returns the metric info if it has been registered.
-  absl::optional<MetricInfo> GetMetricInfo(
-      absl::string_view metric_suffix) const;
-
- private:
-  MetricInfo GetMetricInfoOrFail(absl::string_view metric_suffix) const;
-
-  std::string metric_basename_;
-  std::string story_name_;
-  std::unordered_map<std::string, MetricInfo> metric_map_;
-};
-
-}  // namespace test
-}  // namespace webrtc
-
-#endif  // TEST_TESTSUPPORT_PERF_RESULT_REPORTER_H_