Updated remoting.xhr API to use promises. Removed access to the native

remoting/webapp/js_proto/sinon_proto.js

 // Copyright 2015 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.
 
 var sinon = sinon || {};
 
 /** @type {Object} */
 sinon.assert = {};
 
 /**
@@ skipping 73 matching lines @@
 sinon.Spy.prototype.called = false;
 
 /** @type {function(...):boolean} */
 sinon.Spy.prototype.calledWith = function() {};
 
 /** @type {function(number):{args:Array}} */
 sinon.Spy.prototype.getCall = function(index) {};
 
 sinon.Spy.prototype.reset = function() {};
 
+sinon.fakeServer = {};
+
+/** @return {sinon.FakeXhr} */
+sinon.useFakeXMLHttpRequest = function() {};
+
+/** @interface */
+sinon.FakeXhr = function() {};
+
+/** @type {string} */
+sinon.FakeXhr.prototype.method;
+
+/** @type {string} */
+sinon.FakeXhr.prototype.url;
+
+/** @type {boolean} */
+sinon.FakeXhr.prototype.withCredentials;
+
+/** @type {?string} */
+sinon.FakeXhr.prototype.requestBody;
+
+/** @type {!Object<string,string>} */
+sinon.FakeXhr.prototype.requestHeaders;
+
+/**
+ * @param {number} status
+ * @param {!Object<string,string>} headers
+ * @param {?string} content
+ */
+sinon.FakeXhr.prototype.respond;
+
+/**
+ * @type {?function(!sinon.FakeXhr)}
+ */
+sinon.FakeXhr.prototype.onCreate;
+
+/** @return {sinon.FakeServer} */
+sinon.fakeServer.create = function() {};
+
+/** @interface */
+sinon.FakeServer = function() {};
+
+/**
+ * @param {*} a
+ * @param {*=} opt_b
+ * @param {*=} opt_c
+ * @return {void}
+ */
+sinon.FakeServer.prototype.respondWith = function(a, opt_b, opt_c) {};
+
+/**
+ * @return {void}
+ */
+sinon.FakeServer.prototype.respond = function() {};
+
 /**
  * @param {Object} obj
  * @param {string} method
  * @param {Function=} opt_stubFunction
  * @return {sinon.TestStub}
  */
 sinon.stub = function(obj, method, opt_stubFunction) {};
 
 /** @constructor */
 sinon.TestStub = function() {};
 
 /** @type {function(number):{args:Array}} */
 sinon.TestStub.prototype.getCall = function(index) {};
 
 sinon.TestStub.prototype.restore = function() {};
 
 /** @param {*} a */
 sinon.TestStub.prototype.returns = function(a) {};
 
 /** @type {function(...):sinon.Expectation} */
 sinon.TestStub.prototype.withArgs = function() {};
 
 /** @type {function(...):sinon.Expectation} */
 sinon.TestStub.prototype.onFirstCall = function() {};
 
 /** @returns {Object}  */
 sinon.createStubInstance = function (/** * */ constructor) {};