Added a message that suggest to configure a proxy for a network.

chrome/browser/resources/chromeos/login/screen_error_message.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.
 
 /**
  * @fileoverview Offline message screen implementation.
  */
 
 cr.define('login', function() {
   // Screens that should have offline message overlay.
@@ skipping 16 matching lines @@
   };
 
   // Frame loading errors.
   var NET_ERROR = {
     ABORTED_BY_USER: 3
   };
 
   // Link which starts guest session for captive portal fixing.
   /** @const */ var FIX_CAPTIVE_PORTAL_ID = 'captive-portal-fix-link';
 
+  /** @const */ var FIX_PROXY_SETTINGS_ID = 'proxy-settings-fix-link';
+
   // Id of the element which holds current network name.
   /** @const */ var CURRENT_NETWORK_NAME_ID = 'captive-portal-network-name';
 
   // Link which triggers frame reload.
   /** @const */ var RELOAD_PAGE_ID = 'proxy-error-retry-link';
 
   /**
    * Creates a new offline message screen div.
    * @constructor
    * @extends {HTMLDivElement}
@@ skipping 29 matching lines @@
     updateLocalizedContent_: function() {
       $('captive-portal-message-text').innerHTML = localStrings.getStringF(
         'captivePortalMessage',
         '<b id="' + CURRENT_NETWORK_NAME_ID + '"></b>',
         '<a id="' + FIX_CAPTIVE_PORTAL_ID + '" class="signin-link" href="#">',
         '</a>');
       $(FIX_CAPTIVE_PORTAL_ID).onclick = function() {
         chrome.send('showCaptivePortal');
       };
 
+      $('captive-portal-proxy-message-text').innerHTML =
+        localStrings.getStringF(
+          'captivePortalProxyMessage',
+          '<a id="' + FIX_PROXY_SETTINGS_ID + '" class="signin-link" href="#">',
+          '</a>');
+      $(FIX_PROXY_SETTINGS_ID).onclick = function() {
+        chrome.send('openProxySettings');
+      };
+
       $('proxy-message-text').innerHTML = localStrings.getStringF(
           'proxyMessageText',
           '<a id="' + RELOAD_PAGE_ID + '" class="signin-link" href="#">',
           '</a>');
       $(RELOAD_PAGE_ID).onclick = function() {
         var currentScreen = Oobe.getInstance().currentScreen;
         // Schedules a immediate retry.
         currentScreen.doReload();
       };
 
@@ skipping 235 matching lines @@
    * via template.
    */
   ErrorMessageScreen.updateLocalizedContent = function() {
     $('error-message').updateLocalizedContent_();
   };
 
   return {
     ErrorMessageScreen: ErrorMessageScreen
   };
 });