MD Settings: Convert spell-check from checkbox to toggle.

chrome/browser/resources/settings/languages_page/languages_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-languages-page' is the settings page
  * for language and input method settings.
  */
 cr.exportPath('settings');
 
@@ skipping 47 matching lines @@
 
     /** @private */
     showAddLanguagesDialog_: Boolean,
   },
 
   /**
    * Handler for enabling or disabling spell check.
    * @param {!{target: Element, model: !{item: !LanguageState}}} e
    */
   onSpellCheckChange_: function(e) {
-    this.languageHelper.toggleSpellCheck(e.model.item.language.code,
-                                         e.target.checked);
+    var item = e.model.item;
+    if (!item.language.supportsSpellcheck)
+      return;
+
+    this.languageHelper.toggleSpellCheck(item.language.code,
+                                         !item.spellCheckEnabled);
   },
 
   /** @private */
   onBackTap_: function() {
     this.$.pages.back();
   },
 
   /**
    * Stamps and opens the Add Languages dialog, registering a listener to
    * disable the dialog's dom-if again on close.
@@ skipping 464 matching lines @@
     if (e.target.tagName == expandButtonTag)
       return;
 
     /** @type {!CrExpandButtonElement} */
     var expandButton = e.currentTarget.querySelector(expandButtonTag);
     assert(expandButton);
     expandButton.expanded = !expandButton.expanded;
   },
 });
 })();