Make the fuchsia mojo/public repo the source of truth.

mojo/public/c/tests/system/perftest_utils.cc

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "mojo/public/c/tests/system/perftest_utils.h"
-
-#include <assert.h>
-#include <mojo/macros.h>
-#include <mojo/system/time.h>
-#include <stddef.h>
-#include <time.h>
-
-#include "mojo/public/cpp/test_support/test_support.h"
-
-namespace mojo {
-namespace test {
-
-// Iterates the given function for |kPerftestTimeMicroseconds| and reports the
-// number of iterations executed per second.
-void IterateAndReportPerf(const char* test_name,
-                          const char* sub_test_name,
-                          std::function<void()> single_iteration) {
-  // TODO(vtl): These should be specifiable using command-line flags.
-  static constexpr size_t kGranularity = 100u;
-
-  const MojoTimeTicks start_time = MojoGetTimeTicksNow();
-  MojoTimeTicks end_time;
-  size_t iterations = 0u;
-  do {
-    for (size_t i = 0u; i < kGranularity; i++)
-      single_iteration();
-    iterations += kGranularity;
-
-    end_time = MojoGetTimeTicksNow();
-  } while (end_time - start_time < kPerftestTimeMicroseconds);
-
-  LogPerfResult(test_name, sub_test_name,
-                1000000.0 * iterations / (end_time - start_time),
-                "iterations/second");
-}
-
-void Sleep(MojoTimeTicks microseconds) {
-  struct timespec req = {
-      static_cast<time_t>(microseconds / 1000000),       // Seconds.
-      static_cast<long>(microseconds % 1000000) * 1000L  // Nanoseconds.
-  };
-  int rv = nanosleep(&req, nullptr);
-  MOJO_ALLOW_UNUSED_LOCAL(rv);
-  assert(rv == 0);
-}
-
-}  // namespace test
-}  // namespace mojo