MD Settings: About page, implementing detailed build info.

chrome/browser/resources/settings/about_page/about_page_browser_proxy.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.
 
 /**
  * @fileoverview A helper object used from the "About" section to interact with
  * the browser.
  */
 
 <if expr="chromeos">
 /**
  * @typedef {{
  *   text: string,
  *   url: string,
  * }}
  */
 var RegulatoryInfo;
 
 /**
  * @typedef {{
  *   arcVersion: string,
  *   osFirmware: string,
  *   osVersion: string,
  * }}
  */
 var VersionInfo;
+
+/**
+ * Enumeration of all possible browser channels.
+ * @enum {string}
+ */
+var BrowserChannel = {
+  BETA: 'beta-channel',
+  DEV: 'dev-channel',
+  STABLE: 'stable-channel',
+};
 </if>
 
 cr.define('settings', function() {
-  /**
-   * Enumeration of all possible browser channels.
-   * @enum {string}
-   */
-  var BrowserChannel = {
-    BETA: 'beta-channel',
-    DEV: 'dev-channel',
-    STABLE: 'stable-channel',
-  };
-
   /** @interface */
   function AboutPageBrowserProxy() {}
 
   AboutPageBrowserProxy.prototype = {
     /**
      * Called once the page is ready. It results in one or more
      * 'update-status-changed' WebUI events.
      */
     refreshUpdateStatus: function() {},
 
@@ skipping 17 matching lines @@
      * Checks for available update and applies if it exists.
      */
     requestUpdate: function() {},
 
     /**
      * @param {!BrowserChannel} channel
      * @param {boolean} isPowerwashAllowed
      */
     setChannel: function(channel, isPowerwashAllowed) {},
 
-    /** @return {!Promise<string>} */
+    /** @return {!Promise<!BrowserChannel>} */
     getCurrentChannel: function() {},
 
-    /** @return {!Promise<string>} */
+    /** @return {!Promise<!BrowserChannel>} */
     getTargetChannel: function() {},
 
     /** @return {!Promise<!VersionInfo>} */
     getVersionInfo: function() {},
 
     /** @return {!Promise<?RegulatoryInfo>} */
     getRegulatoryInfo: function() {},
 </if>
   };
 
@@ skipping 58 matching lines @@
       return cr.sendWithPromise('getRegulatoryInfo');
     }
 </if>
   };
 
   return {
     AboutPageBrowserProxy: AboutPageBrowserProxy,
     AboutPageBrowserProxyImpl: AboutPageBrowserProxyImpl,
   };
 });