Fix Polymer licensing issues

third_party/polymer/v1_0/components/iron-ajax/iron-ajax.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="iron-request.html">
-
-<!--
-The `iron-ajax` element exposes network request functionality.
-
-    <iron-ajax
-        auto
-        url="http://gdata.youtube.com/feeds/api/videos/"
-        params='{"alt":"json", "q":"chrome"}'
-        handle-as="json"
-        on-response="handleResponse"
-        debounce-duration="300"></iron-ajax>
-
-With `auto` set to `true`, the element performs a request whenever
-its `url`, `params` or `body` properties are changed. Automatically generated
-requests will be debounced in the case that multiple attributes are changed
-sequentially.
-
-Note: The `params` attribute must be double quoted JSON.
-
-You can trigger a request explicitly by calling `generateRequest` on the
-element.
-
-@demo demo/index.html
--->
-
-<script>
-
-  Polymer({
-
-    is: 'iron-ajax',
-
-    /**
-     * Fired when a request is sent.
-     *
-     * @event request
-     */
-
-    /**
-     * Fired when a response is received.
-     *
-     * @event response
-     */
-
-    /**
-     * Fired when an error is received.
-     *
-     * @event error
-     */
-
-    properties: {
-      /**
-       * The URL target of the request.
-       */
-      url: {
-        type: String,
-        value: ''
-      },
-
-      /**
-       * An object that contains query parameters to be appended to the
-       * specified `url` when generating a request. If you wish to set the body
-       * content when making a POST request, you should use the `body` property
-       * instead.
-       */
-      params: {
-        type: Object,
-        value: function() {
-          return {};
-        }
-      },
-
-      /**
-       * The HTTP method to use such as 'GET', 'POST', 'PUT', or 'DELETE'.
-       * Default is 'GET'.
-       */
-      method: {
-        type: String,
-        value: 'GET'
-      },
-
-      /**
-       * HTTP request headers to send.
-       *
-       * Example:
-       *
-       *     <iron-ajax
-       *         auto
-       *         url="http://somesite.com"
-       *         headers='{"X-Requested-With": "XMLHttpRequest"}'
-       *         handle-as="json"
-       *         last-response-changed="{{handleResponse}}"></iron-ajax>
-       *
-       * Note: setting a `Content-Type` header here will override the value
-       * specified by the `contentType` property of this element.
-       */
-      headers: {
-        type: Object,
-        value: function() {
-          return {};
-        }
-      },
-
-      /**
-       * Content type to use when sending data. If the `contentType` property
-       * is set and a `Content-Type` header is specified in the `headers`
-       * property, the `headers` property value will take precedence.
-       */
-      contentType: {
-        type: String,
-        value: 'application/x-www-form-urlencoded'
-      },
-
-      /**
-       * Optional raw body content to send when method === "POST".
-       *
-       * Example:
-       *
-       *     <iron-ajax method="POST" auto url="http://somesite.com"
-       *         body='{"foo":1, "bar":2}'>
-       *     </iron-ajax>
-       */
-      body: {
-        type: String,
-        value: ''
-      },
-
-      /**
-       * Toggle whether XHR is synchronous or asynchronous. Don't change this
-       * to true unless You Know What You Are Doing™.
-       */
-      sync: {
-        type: Boolean,
-        value: false
-      },
-
-      /**
-       * Specifies what data to store in the `response` property, and
-       * to deliver as `event.response` in `response` events.
-       *
-       * One of:
-       *
-       *    `text`: uses `XHR.responseText`.
-       *
-       *    `xml`: uses `XHR.responseXML`.
-       *
-       *    `json`: uses `XHR.responseText` parsed as JSON.
-       *
-       *    `arraybuffer`: uses `XHR.response`.
-       *
-       *    `blob`: uses `XHR.response`.
-       *
-       *    `document`: uses `XHR.response`.
-       */
-      handleAs: {
-        type: String,
-        value: 'json'
-      },
-
-      /**
-       * Set the withCredentials flag on the request.
-       */
-      withCredentials: {
-        type: Boolean,
-        value: false
-      },
-
-      /**
-       * If true, automatically performs an Ajax request when either `url` or
-       * `params` changes.
-       */
-      auto: {
-        type: Boolean,
-        value: false
-      },
-
-      /**
-       * If true, error messages will automatically be logged to the console.
-       */
-      verbose: {
-        type: Boolean,
-        value: false
-      },
-
-      /**
-       * Will be set to true if there is at least one in-flight request
-       * associated with this iron-ajax element.
-       */
-      loading: {
-        type: Boolean,
-        notify: true,
-        readOnly: true
-      },
-
-      /**
-       * Will be set to the most recent request made by this iron-ajax element.
-       */
-      lastRequest: {
-        type: Object,
-        notify: true,
-        readOnly: true
-      },
-
-      /**
-       * Will be set to the most recent response received by a request
-       * that originated from this iron-ajax element. The type of the response
-       * is determined by the value of `handleAs` at the time that the request
-       * was generated.
-       */
-      lastResponse: {
-        type: Object,
-        notify: true,
-        readOnly: true
-      },
-
-      /**
-       * Will be set to the most recent error that resulted from a request
-       * that originated from this iron-ajax element.
-       */
-      lastError: {
-        type: Object,
-        notify: true,
-        readOnly: true
-      },
-
-      /**
-       * An Array of all in-flight requests originating from this iron-ajax
-       * element.
-       */
-      activeRequests: {
-        type: Array,
-        notify: true,
-        readOnly: true,
-        value: function() {
-          return [];
-        }
-      },
-
-      /**
-       * Length of time in milliseconds to debounce multiple requests.
-       */
-      debounceDuration: {
-        type: Number,
-        value: 0,
-        notify: true
-      },
-
-      _boundHandleResponse: {
-        type: Function,
-        value: function() {
-          return this._handleResponse.bind(this);
-        }
-      }
-    },
-
-    observers: [
-      '_requestOptionsChanged(url, method, params, headers,' +
-        'contentType, body, sync, handleAs, withCredentials, auto)'
-    ],
-
-    /**
-     * The query string that should be appended to the `url`, serialized from
-     * the current value of `params`.
-     *
-     * @return {string}
-     */
-    get queryString () {
-      var queryParts = [];
-      var param;
-      var value;
-
-      for (param in this.params) {
-        value = this.params[param];
-        param = window.encodeURIComponent(param);
-
-        if (value !== null) {
-          param += '=' + window.encodeURIComponent(value);
-        }
-
-        queryParts.push(param);
-      }
-
-      return queryParts.join('&');
-    },
-
-    /**
-     * The `url` with query string (if `params` are specified), suitable for
-     * providing to an `iron-request` instance.
-     *
-     * @return {string}
-     */
-    get requestUrl() {
-      var queryString = this.queryString;
-
-      if (queryString) {
-        return this.url + '?' + queryString;
-      }
-
-      return this.url;
-    },
-
-    /**
-     * An object that maps header names to header values, first applying the
-     * the value of `Content-Type` and then overlaying the headers specified
-     * in the `headers` property.
-     *
-     * @return {Object}
-     */
-    get requestHeaders() {
-      var headers = {
-        'Content-Type': this.contentType
-      };
-      var header;
-
-      if (this.headers instanceof Object) {
-        for (header in this.headers) {
-          headers[header] = this.headers[header].toString();
-        }
-      }
-
-      return headers;
-    },
-
-    /**
-     * Request options suitable for generating an `iron-request` instance based
-     * on the current state of the `iron-ajax` instance's properties.
-     *
-     * @return {{
-     *   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)}}
-     */
-    toRequestOptions: function() {
-      return {
-        url: this.requestUrl,
-        method: this.method,
-        headers: this.requestHeaders,
-        body: this.body,
-        async: !this.sync,
-        handleAs: this.handleAs,
-        withCredentials: this.withCredentials
-      };
-    },
-
-    /**
-     * Performs an AJAX request to the specified URL.
-     *
-     * @return {!IronRequestElement}
-     */
-    generateRequest: function() {
-      var request = /** @type {!IronRequestElement} */ (document.createElement('iron-request'));
-      var requestOptions = this.toRequestOptions();
-
-      this.activeRequests.push(request);
-
-      request.completes.then(
-        this._boundHandleResponse
-      ).catch(
-        this._handleError.bind(this, request)
-      ).then(
-        this._discardRequest.bind(this, request)
-      );
-
-      request.send(requestOptions);
-
-      this._setLastRequest(request);
-      this._setLoading(true);
-
-      this.fire('request', {
-        request: request,
-        options: requestOptions
-      });
-
-      return request;
-    },
-
-    _handleResponse: function(request) {
-      this._setLastResponse(request.response);
-      this.fire('response', request);
-    },
-
-    _handleError: function(request, error) {
-      if (this.verbose) {
-        console.error(error);
-      }
-
-      this._setLastError({
-        request: request,
-        error: error
-      });
-      this.fire('error', {
-        request: request,
-        error: error
-      });
-    },
-
-    _discardRequest: function(request) {
-      var requestIndex = this.activeRequests.indexOf(request);
-
-      if (requestIndex > -1) {
-        this.activeRequests.splice(requestIndex, 1);
-      }
-
-      if (this.activeRequests.length === 0) {
-        this._setLoading(false);
-      }
-    },
-
-    _requestOptionsChanged: function() {
-      this.debounce('generate-request', function() {
-        if (!this.url && this.url !== '') {
-          return;
-        }
-
-        if (this.auto) {
-          this.generateRequest();
-        }
-      }, this.debounceDuration);
-    },
-
-  });
-</script>