Ship ReadableStream pipeTo()

third_party/WebKit/Source/core/streams/ReadableStreamExperimentalPipeTo.js

-// 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 pipeTo() and pipeThrough() on the global ReadableStream object when
-// the experimental flag is enabled.
-
-(function(global, binding, v8) {
-  'use strict';
-
-  const defineProperty = global.Object.defineProperty;
-  defineProperty(global.ReadableStream.prototype, 'pipeThrough', {
-    value: binding.ReadableStream_prototype_pipeThrough,
-    enumerable: false,
-    configurable: true,
-    writable: true
-  });
-
-  defineProperty(global.ReadableStream.prototype, 'pipeTo', {
-    value: binding.ReadableStream_prototype_pipeTo,
-    enumerable: false,
-    configurable: true,
-    writable: true
-  });
-});