Fix JavaScript errors in options2

chrome/browser/resources/options2/language_list.js

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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() {
   const ArrayDataModel = cr.ui.ArrayDataModel;
   const DeletableItem = options.DeletableItem;
   const DeletableItemList = options.DeletableItemList;
   const List = cr.ui.List;
   const ListItem = cr.ui.ListItem;
   const ListSingleSelectionModel = cr.ui.ListSingleSelectionModel;
@@ skipping 211 matching lines @@
         this.savePreference_();
       }
       return index;
     },
 
     /*
      * Computes the target item of drop event.
      * @param {Event} e The drop or dragover event.
      * @private
      */
-    getTargetFromDropEvent_ : function(e) {
+    getTargetFromDropEvent_: function(e) {
       var target = e.target;
       // e.target may be an inner element of the list item
       while (target != null && !(target instanceof ListItem)) {
         target = target.parentNode;
       }
       return target;
     },
 
     /*
      * Handles the dragstart event.
@@ skipping 70 matching lines @@
       this.selectionModel.selectedIndex = newIndex;
       // Save the preference.
       this.savePreference_();
     },
 
     /*
      * Handles the dragleave event.
      * @param {Event} e The dragleave event
      * @private
      */
-    handleDragLeave_ : function(e) {
+    handleDragLeave_: function(e) {
       this.hideDropMarker_();
     },
 
     /*
      * Shows and positions the marker to indicate the drop target.
      * @param {HTMLElement} target The current target list item of drop
      * @param {string} pos 'below' or 'above'
      * @private
      */
-    showDropMarker_ : function(target, pos) {
+    showDropMarker_: function(target, pos) {
       window.clearTimeout(this.hideDropMarkerTimer_);
       var marker = $('language-options-list-dropmarker');
       var rect = target.getBoundingClientRect();
       var markerHeight = 8;
       if (pos == 'above') {
-        marker.style.top = (rect.top - markerHeight/2) + 'px';
+        marker.style.top = (rect.top - markerHeight / 2) + 'px';
       } else {
-        marker.style.top = (rect.bottom - markerHeight/2) + 'px';
+        marker.style.top = (rect.bottom - markerHeight / 2) + 'px';
       }
       marker.style.width = rect.width + 'px';
       marker.style.left = rect.left + 'px';
       marker.style.display = 'block';
     },
 
     /*
      * Hides the drop marker.
      * @private
      */
-    hideDropMarker_ : function() {
+    hideDropMarker_: function() {
       // Hide the marker in a timeout to reduce flickering as we move between
       // valid drop targets.
       window.clearTimeout(this.hideDropMarkerTimer_);
       this.hideDropMarkerTimer_ = window.setTimeout(function() {
         $('language-options-list-dropmarker').style.display = '';
       }, 100);
     },
 
     /**
      * Handles preferred languages pref change.
@@ skipping 36 matching lines @@
                                    this.selectionModel.selectedIndex : -1);
       this.dataModel = new ArrayDataModel(languageCodes);
       if (originalSelectedIndex >= 0 &&
           originalSelectedIndex < this.dataModel.length) {
         // Restore the original selected index if the selected index is
         // valid after the data model is loaded. This is neeeded to keep
         // the selected language after the languge is added or removed.
         this.selectionModel.selectedIndex = originalSelectedIndex;
         // The lead index should be updated too.
         this.selectionModel.leadIndex = originalSelectedIndex;
-      } else if (this.dataModel.length > 0){
+      } else if (this.dataModel.length > 0) {
         // Otherwise, select the first item if it's not empty.
         // Note that ListSingleSelectionModel won't select an item
         // automatically, hence we manually select the first item here.
         this.selectionModel.selectedIndex = 0;
       }
     },
 
     /**
      * Saves the preference.
      */
@@ skipping 57 matching lines @@
       }
       return filteredLanguageCodes;
     },
   };
 
   return {
     LanguageList: LanguageList,
     LanguageListItem: LanguageListItem
   };
 });