[ChromeOS] Assorted WebUI login fixes.

chrome/browser/resources/chromeos/login/screen_gaia_signin.js

 // Copyright (c) 2011 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 Oobe signin screen implementation.
  */
 
 cr.define('login', function() {
 
@@ skipping 32 matching lines @@
     get header() {
       return localStrings.getString('signinScreenTitle');
     },
 
     /**
      * Event handler that is invoked just before the frame is shown.
      * @param data {string} Screen init payload. Url of auth extension start
      *        page.
      */
     onBeforeShow: function(data) {
-      console.log('Opening extension: ' + data);
+      console.log('Opening extension: ' + data.startUrl +
+                  ', opt_email=' + data.email);
       var frame = $('signin-frame');
       frame.addEventListener('load', function(e) {
-        console.log('Frame loaded: ' + data);
+        console.log('Frame loaded: ' + data.startUrl);
       });
       frame.contentWindow.location.href = data.startUrl;
       this.extension_url_ = data.startUrl;
       // TODO(xiyuan): Pre-populate Gaia with data.email (if any).
     },
 
     /**
      * Checks if message comes from the loaded authentication extension.
      * @param e {object} Payload of the received HTML5 message.
      * @type {bool}
@@ skipping 11 matching lines @@
       if (msg.method == 'completeLogin' && this.isAuthExtMessage_(e)) {
         chrome.send('completeLogin', [msg.email, msg.password] );
       }
     }
   };
 
   return {
     GaiaSigninScreen: GaiaSigninScreen
   };
 });