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

mojo/public/js/support.js

-// 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.
-
-// Module "mojo/public/js/support"
-//
-// Note: This file is for documentation purposes only. The code here is not
-// actually executed. The real module is implemented natively in Mojo.
-
-while (1);
-
-/*
- * Waits on the given handle until the state indicated by |signals| is
- * satisfied.
- *
- * @param {MojoHandle} handle The handle to wait on.
- * @param {MojoHandleSignals} signals Specifies the condition to wait for.
- * @param {function (mojoResult)} callback Called with the result the wait is
- * complete. See MojoWait for possible result codes.
- *
- * @return {MojoWaitId} A waitId that can be passed to cancelWait to cancel the
- * wait.
- */
-function asyncWait(handle, signals, callback) { [native code] }
-
-/*
- * Cancels the asyncWait operation specified by the given |waitId|.
- * @param {MojoWaitId} waitId The waitId returned by asyncWait.
- */
-function cancelWait(waitId) { [native code] }