Show confirmation dialog for unsecure signin

chrome/browser/resources/gaia_auth/main.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.
 
 /**
  * Authenticator class wraps the communications between Gaia and its host.
  */
 function Authenticator() {
 }
 
@@ skipping 189 matching lines @@
    */
   completeLogin_: function(opt_extraMsg) {
     var msg = {
       'method': 'completeLogin',
       'email': (opt_extraMsg && opt_extraMsg.email) || this.email_,
       'password': (opt_extraMsg && opt_extraMsg.password) ||
                   this.passwordBytes_,
       'usingSAML': this.isSAMLFlow_,
       'chooseWhatToSync': this.chooseWhatToSync_ || false,
       'skipForNow': opt_extraMsg && opt_extraMsg.skipForNow,
-      'sessionIndex': opt_extraMsg && opt_extraMsg.sessionIndex
+      'sessionIndex': opt_extraMsg && opt_extraMsg.sessionIndex,
+      'confirmUntrustedSignin': opt_extraMsg &&
+                                opt_extraMsg.confirmUntrustedSignin
     };
     window.parent.postMessage(msg, this.parentPage_);
     if (this.isSAMLEnabled_)
       this.supportChannel_.send({name: 'resetAuth'});
   },
 
   /**
    * Invoked when 'enableSAML' event is received to initialize SAML support on
    * Chrome OS, or when initDesktopChannel_ is called on desktop.
    */
@@ skipping 206 matching lines @@
     } else if (msg.method == 'redirectToSignin' &&
                this.isParentMessage_(e)) {
       $('gaia-frame').src = this.constructInitialFrameUrl_();
     } else {
        console.error('Authenticator.onMessage: unknown message + origin!?');
     }
   }
 };
 
 Authenticator.getInstance().initialize();