Fix Polymer licensing issues

third_party/polymer/v1_0/components/iron-ajax/iron-request.html

-<!--
-Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-
-<link rel="import" href="../polymer/polymer.html">
-<link rel="import" href="../promise-polyfill/promise-polyfill-lite.html">
-
-<!--
-iron-request can be used to perform XMLHttpRequests.
-
-    <iron-request id="xhr"></iron-request>
-    ...
-    this.$.xhr.send({url: url, params: params});
--->
-<script>
-  Polymer({
-    is: 'iron-request',
-
-    properties: {
-
-      /**
-       * A reference to the XMLHttpRequest instance used to generate the
-       * network request.
-       *
-       * @attribute xhr
-       * @type XMLHttpRequest
-       * @default `new XMLHttpRequest`
-       */
-      xhr: {
-        type: Object,
-        notify: true,
-        readOnly: true,
-        value: function() {
-          return new XMLHttpRequest();
-        }
-      },
-
-      /**
-       * A reference to the parsed response body, if the `xhr` has completely
-       * resolved.
-       *
-       * @attribute response
-       * @type {*}
-       * @default null
-       */
-      response: {
-        type: Object,
-        notify: true,
-        readOnly: true,
-        value: function() {
-         return null;
-        }
-      },
-
-      /**
-       * A promise that resolves when the `xhr` response comes back, or rejects
-       * if there is an error before the `xhr` completes.
-       *
-       * @attribute completes
-       * @type Promise
-       * @default `new Promise`
-       */
-      completes: {
-        type: Object,
-        readOnly: true,
-        notify: true,
-        value: function() {
-          return new Promise(function (resolve, reject) {
-            this.resolveCompletes = resolve;
-            this.rejectCompletes = reject;
-          }.bind(this));
-        }
-      },
-
-      /**
-       * An object that contains progress information emitted by the XHR if
-       * available.
-       *
-       * @attribute progress
-       * @type Object
-       * @default {}
-       */
-      progress: {
-        type: Object,
-        notify: true,
-        readOnly: true,
-        value: function() {
-          return {};
-        }
-      },
-
-      /**
-       * Aborted will be true if an abort of the request is attempted.
-       *
-       * @attribute aborted
-       * @type boolean
-       * @default false
-       */
-      aborted: {
-        type: Boolean,
-        notify: true,
-        readOnly: true,
-        value: false,
-      }
-    },
-
-    /**
-     * Succeeded is true if the request succeeded. The request succeeded if the
-     * status code is greater-than-or-equal-to 200, and less-than 300. Also,
-     * the status code 0 is accepted as a success even though the outcome may
-     * be ambiguous.
-     *
-     * @return {boolean}
-     */
-    get succeeded() {
-      var status = this.xhr.status || 0;
-
-      // Note: if we are using the file:// protocol, the status code will be 0
-      // for all outcomes (successful or otherwise).
-      return status === 0 ||
-        (status >= 200 && status < 300);
-    },
-
-    /**
-     * Sends an HTTP request to the server and returns the XHR object.
-     *
-     * @param {{
-     *   url: string,
-     *   method: (string|undefined),
-     *   async: (boolean|undefined),
-     *   body: (ArrayBuffer|ArrayBufferView|Blob|Document|FormData|null|string|undefined),
-     *   headers: (Object|undefined),
-     *   handleAs: (string|undefined),
-     *   withCredentials: (boolean|undefined)}} options -
-     *     url The url to which the request is sent.
-     *     method The HTTP method to use, default is GET.
-     *     async By default, all requests are sent asynchronously. To send synchronous requests,
-     *         set to true.
-     *     body The content for the request body for POST method.
-     *     headers HTTP request headers.
-     *     handleAs The response type. Default is 'text'.
-     *     withCredentials Whether or not to send credentials on the request. Default is false.
-     * @return {Promise}
-     */
-    send: function (options) {
-      var xhr = this.xhr;
-
-      if (xhr.readyState > 0) {
-        return null;
-      }
-
-      xhr.addEventListener('readystatechange', function () {
-        if (xhr.readyState === 4 && !this.aborted) {
-
-          if (!this.succeeded) {
-            this.rejectCompletes(new Error('The request failed with status code: ' + this.xhr.status));
-            return;
-          }
-
-          this._setResponse(this.parseResponse());
-          this.resolveCompletes(this);
-        }
-      }.bind(this));
-
-      xhr.addEventListener('progress', function (progress) {
-        this._setProgress({
-          lengthComputable: progress.lengthComputable,
-          loaded: progress.loaded,
-          total: progress.total
-        });
-      }.bind(this))
-
-      xhr.addEventListener('error', function (error) {
-        this.rejectCompletes(error);
-      }.bind(this));
-
-      xhr.addEventListener('abort', function () {
-        this.rejectCompletes(new Error('Request aborted.'));
-      }.bind(this));
-
-      xhr.open(
-        options.method || 'GET',
-        options.url,
-        options.async !== false
-      );
-
-      if (options.headers) {
-        Object.keys(options.headers).forEach(function (requestHeader) {
-          xhr.setRequestHeader(
-            requestHeader,
-            options.headers[requestHeader]
-          );
-        }, this);
-      }
-
-      // In IE, `xhr.responseType` is an empty string when the response
-      // returns. Hence, caching it as `xhr._responseType`.
-      xhr.responseType = xhr._responseType = (options.handleAs || 'text');
-      xhr.withCredentials = !!options.withCredentials;
-
-      xhr.send(options.body);
-
-      return this.completes;
-    },
-
-    /**
-     * Attempts to parse the response body of the XHR. If parsing succeeds,
-     * the value returned will be deserialized based on the `responseType`
-     * set on the XHR.
-     *
-     * @return {*} The parsed response,
-     * or undefined if there was an empty response or parsing failed.
-     */
-    parseResponse: function () {
-      var xhr = this.xhr;
-      var responseType = this.xhr.responseType ||
-        this.xhr._responseType;
-      // If we don't have a natural `xhr.responseType`, we prefer parsing
-      // `xhr.responseText` over returning `xhr.response`..
-      var preferResponseText = !this.xhr.responseType;
-
-      try {
-        switch (responseType) {
-          case 'json':
-            // If xhr.response is undefined, responseType `json` may
-            // not be supported.
-            if (preferResponseText || xhr.response === undefined) {
-              // If accessing `xhr.responseText` throws, responseType `json`
-              // is supported and the result is rightly `undefined`.
-              try {
-                xhr.responseText;
-              } catch (e) {
-                return xhr.response;
-              }
-
-              // Otherwise, attempt to parse `xhr.responseText` as JSON.
-              if (xhr.responseText) {
-                return JSON.parse(xhr.responseText);
-              }
-            }
-
-            return xhr.response;
-          case 'xml':
-            return xhr.responseXML;
-          case 'blob':
-          case 'document':
-          case 'arraybuffer':
-            return xhr.response;
-          case 'text':
-          default:
-            return xhr.responseText;
-        }
-      } catch (e) {
-        this.rejectCompletes(new Error('Could not parse response. ' + e.message));
-      }
-    },
-
-    /**
-     * Aborts the request.
-     */
-    abort: function () {
-      this._setAborted(true);
-      this.xhr.abort();
-    }
-  });
-</script>
-