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

mojo/public/c/tests/environment/async_waiter_perftest_helpers.h

Index: mojo/public/c/tests/environment/async_waiter_perftest_helpers.h
diff --git a/mojo/public/c/tests/environment/async_waiter_perftest_helpers.h b/mojo/public/c/tests/environment/async_waiter_perftest_helpers.h
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--- a/mojo/public/c/tests/environment/async_waiter_perftest_helpers.h
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-// 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.
-
-#ifndef MOJO_PUBLIC_C_TESTS_ENVIRONMENT_ASYNC_WAITER_PERFTEST_HELPERS_H_
-#define MOJO_PUBLIC_C_TESTS_ENVIRONMENT_ASYNC_WAITER_PERFTEST_HELPERS_H_
-
-#include <mojo/environment/async_waiter.h>
-#include <stdint.h>
-
-#include <functional>
-
-namespace mojo {
-namespace test {
-
-// Basic single-threaded perf test helper for |MojoAsyncWaiter|. This will keep
-// |num_handles| active async waits and activate them one at a time (with each
-// callback triggering the next). This sets up the test (setting up the initial
-// set of async waits), calls |run_loop_function|, and once that is done cleans
-// up. It returns the number of async waits completed. |run_loop_function|
-// should typically run the message/run loop and quit after some fixed amount of
-// time (it should probably measure the actual amount of time spent running, and
-// the return value should probably be normalized with respect to that).
-uint64_t DoAsyncWaiterPerfTest(const MojoAsyncWaiter* async_waiter,
-                               uint32_t num_handles,
-                               std::function<void()> run_loop_function);
-
-}  // namespace test
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_C_TESTS_ENVIRONMENT_ASYNC_WAITER_PERFTEST_HELPERS_H_