MD Settings: simplify spelling service toggle and make it respect policy

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({
@@ skipping 26 matching lines @@
     showRestart_: Boolean,
 </if>
 
     /** @private */
     safeBrowsingExtendedReportingEnabled_: Boolean,
 
     /** @private */
     showClearBrowsingDataDialog_: Boolean,
   },
 
-<if expr="_google_chrome">
-  observers: [
-    'updateSpellingService_(prefs.spellcheck.use_spelling_service.value)',
-  ],
-</if>
-
   ready: function() {
     this.ContentSettingsTypes = settings.ContentSettingsTypes;
 
-<if expr="_google_chrome">
-    this.updateSpellingService_();
-</if>
-
 <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>
 
     var boundSetSber = this.setSafeBrowsingExtendedReporting_.bind(this);
     this.addWebUIListener('safe-browsing-extended-reporting-change',
@@ skipping 88 matching lines @@
     browserProxy.setSafeBrowsingExtendedReportingEnabled(enabled);
   },
 
   /** @param {boolean} enabled Whether reporting is enabled or not.
     * @private
     */
   setSafeBrowsingExtendedReporting_: function(enabled) {
     this.safeBrowsingExtendedReportingEnabled_ = enabled;
   },
 
-<if expr="_google_chrome">
-  /** @private */
-  updateSpellingService_: function() {
-    this.$.spellingServiceToggleButton.checked =
-        this.get('prefs.spellcheck.use_spelling_service.value');
-  },
-
-  /** @private */
-  onUseSpellingServiceTap_: function() {
-    this.set('prefs.spellcheck.use_spelling_service.value',
-        this.$.spellingServiceToggleButton.checked);
-  },
-</if>
-
   /**
    * The sub-page title for the site or content settings.
    * @return {string}
    * @private
    */
   siteSettingsPageTitle_: function() {
     return loadTimeData.getBoolean('enableSiteSettings') ?
         loadTimeData.getString('siteSettings') :
         loadTimeData.getString('contentSettings');
   },
 });