MD Settings: implement metrics reporting checkbox on desktop

chrome/browser/resources/settings/privacy_page/privacy_page.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.
 
 /**
  * @fileoverview
  * 'settings-privacy-page' is the settings page containing privacy and
  * security settings.
  */
 Polymer({
   is: 'settings-privacy-page',
 
-  behaviors: [settings.RouteObserverBehavior],
+  behaviors: [
+    settings.RouteObserverBehavior,
+<if expr="_google_chrome and not chromeos">
+    WebUIListenerBehavior,
+</if>
+  ],
 
   properties: {
     /**
      * Preferences state.
      */
     prefs: {
       type: Object,
       notify: true,
     },
 
-    /** @private */
-    showClearBrowsingDataDialog_: Boolean,
-
     /**
      * Dictionary defining page visibility.
      * @type {!PrivacyPageVisibility}
      */
     pageVisibility: Object,
+
+<if expr="_google_chrome and not chromeos">
+    /** @type {MetricsReporting} */
+    metricsReporting_: Object,
+</if>
+
+    /** @private */
+    showClearBrowsingDataDialog_: {
+      computed: 'computeShowClearBrowsingDataDialog_(currentRoute)',
+      type: Boolean,
+    },
   },
 
   ready: function() {
     this.ContentSettingsTypes = settings.ContentSettingsTypes;
+
+<if expr="_google_chrome and not chromeos">
+    var boundSetMetricsReporting = this.setMetricsReporting_.bind(this);
+    this.addWebUIListener('metrics-reporting-change', boundSetMetricsReporting);
+
+    var browserProxy = settings.PrivacyPageBrowserProxyImpl.getInstance();
+    browserProxy.getMetricsReporting().then(boundSetMetricsReporting);
+</if>
   },
 
   /** @protected */
   currentRouteChanged: function() {
     this.showClearBrowsingDataDialog_ =
         settings.getCurrentRoute().dialog == 'clear-browsing-data';
   },
 
   /** @private */
   onManageCertificatesTap_: function() {
@@ skipping 13 matching lines @@
 
   /** @private */
   onClearBrowsingDataTap_: function() {
     settings.navigateTo(settings.Route.CLEAR_BROWSER_DATA);
   },
 
   /** @private */
   onDialogClosed_: function() {
     settings.navigateTo(settings.Route.PRIVACY);
   },
+
+<if expr="_google_chrome and not chromeos">
+  /** @private */
+  onMetricsReportingCheckboxTap_: function() {
+    var browserProxy = settings.PrivacyPageBrowserProxyImpl.getInstance();
+    var enabled = this.$.metricsReportingCheckbox.checked;
+    browserProxy.setMetricsReportingEnabled(enabled);
+  },
+
+  /**
+   * @param {!MetricsReporting} metricsReporting
+   * @private
+   */
+  setMetricsReporting_: function(metricsReporting) {
+    this.metricsReporting_ = metricsReporting;
+  },
+</if>
 });