Replace Manage Languages with dialog and dropdown item

chrome/browser/resources/settings/languages_page/manage_languages_page.js

-// Copyright 2015 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.
-
-/**
- * @fileoverview 'settings-manage-languages-page' is a sub-page for enabling
- * and disabling languages.
- */
-Polymer({
-  is: 'settings-manage-languages-page',
-
-  properties: {
-    /**
-     * Preferences state.
-     */
-    prefs: {
-      type: Object,
-      notify: true,
-    },
-
-    /**
-     * @type {!LanguagesModel|undefined}
-     */
-    languages: {
-      type: Object,
-      notify: true,
-    },
-
-    /** @type {!LanguageHelper} */
-    languageHelper: Object,
-  },
-
-  /**
-   * @param {!chrome.languageSettingsPrivate.Language} language
-   * @param {!Object} change Polymer change object (provided in the HTML so this
-   *     gets called whenever languages.enabled.* changes).
-   * @return {boolean}
-   * @private
-   */
-  isCheckboxChecked_: function(language, change) {
-    return this.languageHelper.isLanguageEnabled(language.code);
-  },
-
-  /**
-   * Determines whether a language must be enabled. If so, the checkbox in the
-   * available languages list should not be changeable.
-   * @param {!chrome.languageSettingsPrivate.Language} language
-   * @param {!Object} change Polymer change object (provided in the HTML so this
-   *     gets called whenever languages.enabled.* changes).
-   * @return {boolean}
-   * @private
-   */
-  isLanguageRequired_: function(language, change) {
-    // This check only applies to enabled languages.
-    if (!this.languageHelper.isLanguageEnabled(language.code))
-      return false;
-    return !this.languageHelper.canDisableLanguage(language.code);
-  },
-
-  /**
-   * Handler for removing a language.
-   * @param {!{model: !{item: !LanguageState}}} e
-   * @private
-   */
-  onRemoveLanguageTap_: function(e) {
-    this.languageHelper.disableLanguage(e.model.item.language.code);
-  },
-
-  /**
-   * Handler for checking or unchecking a language item.
-   * @param {!{model: !{item: !chrome.languageSettingsPrivate.Language},
-   *           target: !PaperCheckboxElement}} e
-   * @private
-   */
-  onLanguageCheckboxChange_: function(e) {
-    var code = e.model.item.code;
-    if (e.target.checked)
-      this.languageHelper.enableLanguage(code);
-    else
-      this.languageHelper.disableLanguage(code);
-  },
-});