[MD settings] specify @override on created, ready, and attached

chrome/browser/resources/settings/appearance_page/appearance_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.
 
 
 /**
  * This is the absolute difference maintained between standard and
  * fixed-width font sizes. http://crbug.com/91922.
  * @const @private {number}
  */
@@ skipping 104 matching lines @@
     },
   },
 
   /** @private {?settings.AppearanceBrowserProxy} */
   browserProxy_: null,
 
   observers: [
     'defaultFontSizeChanged_(prefs.webkit.webprefs.default_font_size.value)',
     'themeChanged_(prefs.extensions.theme.id.value, useSystemTheme_)',
 
-    // <if expr="is_linux and not chromeos">
+// <if expr="is_linux and not chromeos">
     // NOTE: this pref only exists on Linux.
     'useSystemThemePrefChanged_(prefs.extensions.theme.use_system.value)',
-    // </if>
+// </if>
   ],
 
+  /** @override */
   created: function() {
     this.browserProxy_ = settings.AppearanceBrowserProxyImpl.getInstance();
   },
 
+  /** @override */
   ready: function() {
     this.$.defaultFontSize.menuOptions = this.fontSizeOptions_;
     // TODO(dschuyler): Look into adding a listener for the
     // default zoom percent.
     this.browserProxy_.getDefaultZoom().then(function(zoom) {
       this.defaultZoom_ = zoom;
     }.bind(this));
   },
 
   /**
@@ skipping 44 matching lines @@
 
   /**
    * URL for either current theme or the theme gallery.
    * @return {string}
    * @private
    */
   getThemeHref_: function() {
     return this.themeUrl_ || loadTimeData.getString('themesGalleryUrl');
   },
 
-  // <if expr="chromeos">
+// <if expr="chromeos">
   /**
    * ChromeOS only.
    * @private
    */
   openWallpaperManager_: function() {
     this.browserProxy_.openWallpaperManager();
   },
-  // </if>
+// </if>
 
   /** @private */
   onUseDefaultTap_: function() {
     this.browserProxy_.useDefaultTheme();
   },
 
-  // <if expr="is_linux and not chromeos">
+// <if expr="is_linux and not chromeos">
   /**
    * @param {boolean} useSystemTheme
    * @private
    */
   useSystemThemePrefChanged_: function(useSystemTheme) {
     this.useSystemTheme_ = useSystemTheme;
   },
 
   /**
    * @param {string} themeId
@@ skipping 24 matching lines @@
    */
   showThemesSecondary_: function(themeId, useSystemTheme) {
     return this.showUseClassic_(themeId, useSystemTheme) ||
            this.showUseSystem_(themeId, useSystemTheme);
   },
 
   /** @private */
   onUseSystemTap_: function() {
     this.browserProxy_.useSystemTheme();
   },
-  // </if>
+// </if>
 
   /**
    * @param {string} themeId
    * @param {boolean} useSystemTheme
    * @private
    */
   themeChanged_: function(themeId, useSystemTheme) {
     if (themeId) {
       assert(!useSystemTheme);
 
       this.browserProxy_.getThemeInfo(themeId).then(function(info) {
         this.themeSublabel_ = info.name;
       }.bind(this));
 
       this.themeUrl_ = 'https://chrome.google.com/webstore/detail/' + themeId;
       return;
     }
 
     var i18nId;
-    // <if expr="is_linux and not chromeos">
+// <if expr="is_linux and not chromeos">
     i18nId = useSystemTheme ? 'systemTheme' : 'classicTheme';
-    // </if>
-    // <if expr="not is_linux or chromeos">
+// </if>
+// <if expr="not is_linux or chromeos">
     i18nId = 'chooseFromWebStore';
-    // </if>
+// </if>
     this.themeSublabel_ = this.i18n(i18nId);
     this.themeUrl_ = '';
   },
 
   /** @private */
   onZoomLevelChange_: function() {
     chrome.settingsPrivate.setDefaultZoom(parseFloat(this.$.zoomLevel.value));
   },
 
   /**
    * @param {boolean} bookmarksBarVisible if bookmarks bar option is visible.
    * @return {string} 'first' if the argument is false or empty otherwise.
    * @private
    */
   getFirst_: function(bookmarksBarVisible) {
     return !bookmarksBarVisible ? 'first' : '';
   },
 
   /**
    * @see content::ZoomValuesEqual().
    * @param {number} zoom1
    * @param {number} zoom2
    * @return {boolean}
    * @private
    */
   zoomValuesEqual_: function(zoom1, zoom2) {
     return Math.abs(zoom1 - zoom2) <= 0.001;
   },
 });