Update cryptotoken to 0.8.63

chrome/browser/resources/cryptotoken/textfetcher.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.
 
 /**
  * @fileoverview Implements a simple XmlHttpRequest-based text document
  * fetcher.
  *
  */
 'use strict';
 
 /**
  * A fetcher of text files.
  * @interface
  */
 function TextFetcher() {}
 
 /**
  * @param {string} url The URL to fetch.
+ * @param {string?} opt_method The HTTP method to use (default GET)
+ * @param {string?} opt_body The request body
  * @return {!Promise.<string>} A promise for the fetched text. In case of an
  *     error, this promise is rejected with an HTTP status code.
  */
-TextFetcher.prototype.fetch = function(url) {};
+TextFetcher.prototype.fetch = function(url, opt_method, opt_body) {};
 
 /**
  * @constructor
  * @implements {TextFetcher}
  */
 function XhrTextFetcher() {
 }
 
 /**
  * @param {string} url The URL to fetch.
+ * @param {string?} opt_method The HTTP method to use (default GET)
+ * @param {string?} opt_body The request body
  * @return {!Promise.<string>} A promise for the fetched text. In case of an
  *     error, this promise is rejected with an HTTP status code.
  */
-XhrTextFetcher.prototype.fetch = function(url) {
+XhrTextFetcher.prototype.fetch = function(url, opt_method, opt_body) {
   return new Promise(function(resolve, reject) {
     var xhr = new XMLHttpRequest();
-    xhr.open('GET', url, true);
+    var method = opt_method || 'GET';
+    xhr.open(method, url, true);
     xhr.onloadend = function() {
       if (xhr.status != 200) {
         reject(xhr.status);
         return;
       }
       resolve(xhr.responseText);
     };
-    xhr.send();
+    xhr.onerror = function() {
+      // Treat any network-level errors as though the page didn't exist.
+      reject(404);
+    };
+    if (opt_body)
+      xhr.send(opt_body);
+    else
+      xhr.send();
   });
 };