Fix race condition in MD Settings Languages page causing inconsistent settings

third_party/closure_compiler/interfaces/language_settings_private_interface.js

 // Copyright 2016 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.
 
 // This file was generated by:
 //   ./tools/json_schema_compiler/compiler.py.
 
 /** @fileoverview Interface for languageSettingsPrivate that can be overriden. */
 
 assertNotReached('Interface file for Closure Compiler should not be executed.');
 
 /** @interface */
 function LanguageSettingsPrivate() {}
 
 LanguageSettingsPrivate.prototype = {
   /**
    * Gets languages available for translate, spell checking, input and locale.
    * @param {function(!Array<!chrome.languageSettingsPrivate.Language>):void}
    *     callback
    * @see https://developer.chrome.com/extensions/languageSettingsPrivate#method-getLanguageList
    */
   getLanguageList: assertNotReached,
 
   /**
-   * Sets the accepted languages, used to decide which languages to translate,
-   * generate the Accept-Language header, etc.
-   * @param {!Array<string>} languageCodes
-   * @see https://developer.chrome.com/extensions/languageSettingsPrivate#method-setLanguageList
+   * Enables a language, adding it to the Accept-Language list (used to decide
+   * which languages to translate, generate the Accept-Language header, etc.).
+   * @param {string} languageCode
+   * @see https://developer.chrome.com/extensions/languageSettingsPrivate#method-enableLanguage
    */
-  setLanguageList: assertNotReached,
+  enableLanguage: assertNotReached,
+
+  /**
+   * Disables a language, removing it from the Accept-Language list.
+   * @param {string} languageCode
+   * @see https://developer.chrome.com/extensions/languageSettingsPrivate#method-disableLanguage
+   */
+  disableLanguage: assertNotReached,
 
   /**
    * Gets the current status of the chosen spell check dictionaries.
    * @param {function(!Array<!chrome.languageSettingsPrivate.SpellcheckDictionaryStatus>):void}
    *     callback
    * @see https://developer.chrome.com/extensions/languageSettingsPrivate#method-getSpellcheckDictionaryStatuses
    */
   getSpellcheckDictionaryStatuses: assertNotReached,
 
   /**
@@ skipping 72 matching lines @@
  * @see https://developer.chrome.com/extensions/languageSettingsPrivate#event-onInputMethodAdded
  */
 LanguageSettingsPrivate.prototype.onInputMethodAdded;
 
 /**
  * Called when an input method is removed.
  * @type {!ChromeEvent}
  * @see https://developer.chrome.com/extensions/languageSettingsPrivate#event-onInputMethodRemoved
  */
 LanguageSettingsPrivate.prototype.onInputMethodRemoved;