Sync starting language and input method preferences

chrome/browser/resources/options/language_list.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() {
   /** @const */ var ArrayDataModel = cr.ui.ArrayDataModel;
   /** @const */ var DeletableItem = options.DeletableItem;
   /** @const */ var DeletableItemList = options.DeletableItemList;
   /** @const */ var List = cr.ui.List;
   /** @const */ var ListItem = cr.ui.ListItem;
@@ skipping 83 matching lines @@
   LanguageList.prototype = {
     __proto__: DeletableItemList.prototype,
 
     // The list item being dragged.
     draggedItem: null,
     // The drop position information: "below" or "above".
     dropPos: null,
     // The preference is a CSV string that describes preferred languages
     // in Chrome OS. The language list is used for showing the language
     // list in "Language and Input" options page.
-    preferredLanguagesPref: 'settings.language.preferred_languages',
+    preferredLanguagesPref: 'settings.language.preferred_languages_local',

[michaelpg, 2014/06/04 01:12:02]

hajimehoshi@ asked:

"Currently, 'settings.language.preferred_languages' is used as the language list
at chrome://settings/languages on Chrome OS, while 'intl.accept_languages' is
used on the other platforms. (On Chrome OS, when the language list is updated,
both preferences are updated. Please see TranslatePrefs::UpdateLanguageList.)
This change means the language list won't be synced on Chrome OS except for
initializing.  Is that OK?"

I'm not sure I understand the question. Currently on Chrome OS the language list
is not synced, and this doesn't change that. So yes, the language list will get
out of date compared to Chrome desktop. But kPrefTranslateBlockedLanguages
should still sync either way.

[hajimehoshi, 2014/06/04 05:55:01]

AFAIK, currently, changing the language list at non-Chrome-OS doesn't affect
Chrome OS, but changing the language list at Chrome OS affects non-Chrome-OS.
Does this CL changes this behavior?

     // The preference is a CSV string that describes accept languages used
     // for content negotiation. To be more precise, the list will be used
     // in "Accept-Language" header in HTTP requests.
     acceptLanguagesPref: 'intl.accept_languages',
 
     /** @override */
     decorate: function() {
       DeletableItemList.prototype.decorate.call(this);
       this.selectionModel = new ListSingleSelectionModel;
 
@@ skipping 316 matching lines @@
       }
       return filteredLanguageCodes;
     },
   };
 
   return {
     LanguageList: LanguageList,
     LanguageListItem: LanguageListItem
   };
 });