[CUPS] Implement Advanced section in CUPS printer details page.

chrome/browser/resources/settings/printing_page/cups_printer_details_page.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.
 
 /**
  * @fileoverview 'settings-cups-printer-details-page' is the subpage for
  * viewing the details of a CUPS printer.
  */
 Polymer({
   is: 'settings-cups-printer-details-page',
 
   properties: {
     /** @type {!CupsPrinterInfo} */
     printer: {
       type: Object,
       notify: true,
     },
+
+    advancedExpanded: {
+      type: Boolean,
+      value: false,
+    },
   },
 
   /** @private {settings.CupsPrintersBrowserProxy} */
   browserProxy_: null,
 
   /** @override */
   created: function() {
     this.browserProxy_ = settings.CupsPrintersBrowserProxyImpl.getInstance();
   },
 
   /**
    * Event triggered when the input value changes.
    * @private
    */
   onValueChanged_: function() {
     this.browserProxy_.updateCupsPrinter(this.printer.printerId,
                                          this.printer.printerName);
   },
+
+  /**
+   * @param {Event} event
+   * @private
+   */
+  toggleAdvancedExpanded_: function(event) {
+    if (event.target.id == 'expandButton')
+      return;  // Already handled.
+    this.advancedExpanded = !this.advancedExpanded;
+  },
 });