Move accessibility extension translations to grd file.

ui/accessibility/extensions/highcontrast/popup.js

 // Copyright (c) 2014 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.
 
 var site;
 var key1;
 var key2;
 
 function setRadio(name, value) {
   var radios = document.querySelectorAll('input[name="' + name + '"]');
@@ skipping 75 matching lines @@
     radios[i].addEventListener('change', function(evt) {
       onRadioChange(evt.target.name, evt.target.value);
     }, false);
     radios[i].addEventListener('click', function(evt) {
       onRadioChange(evt.target.name, evt.target.value);
     }, false);
   }
 }
 
 function init() {
+  var i18nElements = document.querySelectorAll('*[i18n-content]');
+  for (var i = 0; i < i18nElements.length; i++) {
+    var elem = i18nElements[i];
+    var msg = elem.getAttribute('i18n-content');
+    elem.innerHTML = chrome.i18n.getMessage(msg);
+  }
+
   addRadioListeners('keyaction');
   addRadioListeners('apply');
   addRadioListeners('scheme');
   $('toggle').addEventListener('click', onToggle, false);
   $('make_default').addEventListener('click', onMakeDefault, false);
   $('forget').addEventListener('click', onForget, false);
   if (navigator.appVersion.indexOf('Mac') != -1) {
     key1 = '&#x2318;+Shift+F11';
     key2 = '&#x2318;+Shift+F12';
   } else {
@@ skipping 17 matching lines @@
         update();
         return;
       }
     }
     site = 'unknown site';
     update();
   });
 }
 
 window.addEventListener('load', init, false);