Add the link to "languages and input settings" into Keyboard settings.

chrome/browser/resources/options/chromeos/keyboard_overlay.js

 // Copyright (c) 2012 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.
 
 cr.define('options', function() {
 
   /**
    * Encapsulated handling of the keyboard overlay.
    * @constructor
    */
   function KeyboardOverlay() {
     options.SettingsDialog.call(this, 'keyboard-overlay',
         loadTimeData.getString('keyboardOverlayTitle'),
         'keyboard-overlay',
         $('keyboard-confirm'), $('keyboard-cancel'));
   }
 
   cr.addSingletonGetter(KeyboardOverlay);
 
   KeyboardOverlay.prototype = {
     __proto__: options.SettingsDialog.prototype,
 
     /**
+     * Initializes the page. This method is called in initialize.
+     */
+    initializePage: function() {
+      options.SettingsDialog.prototype.initializePage.call(this);
+
+      $('languages-and-input-settings').onclick = function(e) {
+        OptionsPage.navigateToPage('languages');
+      };
+    },
+
+    /**
      * Show/hide the caps lock remapping section.
      * @private
      */
     showCapsLockOptions_: function(show) {
       $('caps-lock-remapping-section').hidden = !show;
     },
 
     /**
      * Show/hide the function key remapping section.
      * @private
@@ skipping 12 matching lines @@
       var instance = KeyboardOverlay.getInstance();
       return instance[name + '_'].apply(instance, arguments);
     };
   });
 
   // Export
   return {
     KeyboardOverlay: KeyboardOverlay
   };
 });