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

mojo/public/cpp/environment/async_waiter.h

-// Copyright 2014 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_CPP_ENVIRONMENT_ASYNC_WAITER_H_
-#define MOJO_PUBLIC_CPP_ENVIRONMENT_ASYNC_WAITER_H_
-
-#include <mojo/environment/async_waiter.h>
-
-#include "mojo/public/cpp/bindings/callback.h"
-#include "mojo/public/cpp/environment/environment.h"
-#include "mojo/public/cpp/system/handle.h"
-
-namespace mojo {
-
-// A class that waits until a handle is ready and calls |callback| with the
-// result. If the AsyncWaiter is deleted before the handle is ready, the wait is
-// cancelled and the callback will not be called.
-class AsyncWaiter {
- public:
-  typedef mojo::Callback<void(MojoResult)> Callback;
-
-  AsyncWaiter(Handle handle,
-              MojoHandleSignals signals,
-              const Callback& callback);
-  ~AsyncWaiter();
-
- private:
-  static void WaitComplete(void* waiter, MojoResult result);
-  void WaitCompleteInternal(MojoResult result);
-
-  const MojoAsyncWaiter* waiter_;
-  MojoAsyncWaitID id_;
-  const Callback callback_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(AsyncWaiter);
-};
-
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_CPP_ENVIRONMENT_ASYNC_WAITER_H_