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

chrome/browser/resources/settings/privacy_page/privacy_page.js

Index: chrome/browser/resources/settings/privacy_page/privacy_page.js
diff --git a/chrome/browser/resources/settings/privacy_page/privacy_page.js b/chrome/browser/resources/settings/privacy_page/privacy_page.js
index 72dc80d4cd66d7b520f311527cbf2d76094a9f68..269aa1818d4a1f4e3c859c7c0bea1be65aa25aea 100644
--- a/chrome/browser/resources/settings/privacy_page/privacy_page.js
+++ b/chrome/browser/resources/settings/privacy_page/privacy_page.js
@@ -44,19 +44,9 @@ Polymer({
     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);
@@ -165,20 +155,6 @@ Polymer({
     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}