Host Chrome OS GAIA signin page in webview

chrome/browser/resources/gaia_auth_host/authenticator.js

Index: chrome/browser/resources/gaia_auth_host/authenticator.js
diff --git a/chrome/browser/resources/gaia_auth_host/authenticator.js b/chrome/browser/resources/gaia_auth_host/authenticator.js
index baf6d8e1a0667a4ea8982565d5d20972e8a03c64..15f5c4c01cc47aecef38447035057cf4415e65f6 100644
--- a/chrome/browser/resources/gaia_auth_host/authenticator.js
+++ b/chrome/browser/resources/gaia_auth_host/authenticator.js
@@ -19,6 +19,7 @@ cr.define('cr.login', function() {
   var SIGN_IN_HEADER = 'google-accounts-signin';
   var EMBEDDED_FORM_HEADER = 'google-accounts-embedded';
   var SAML_HEADER = 'google-accounts-saml';
+  var SERVICE_ID = 'chromeoslogin';
 
   /**
    * The source URL parameter for the constrained signin flow.
@@ -166,7 +167,7 @@ cr.define('cr.login', function() {
     var url = this.idpOrigin_ + (data.gaiaPath || IDP_PATH);
 
     url = appendParam(url, 'continue', this.continueUrl_);
-    url = appendParam(url, 'service', data.service);
+    url = appendParam(url, 'service', data.service || SERVICE_ID);
     if (data.hl)
       url = appendParam(url, 'hl', data.hl);
     if (data.email)
@@ -288,7 +289,7 @@ cr.define('cr.login', function() {
 
     this.listener_.onSuccess({email: this.email_,
                               gaiaId: this.gaiaId_,
-                              password: this.password_,
+                              password: this.password_ || '',
                               usingSAML: this.authFlow_ == AuthFlow.SAML,
                               chooseWhatToSync: this.chooseWhatToSync_,
                               skipForNow: this.skipForNow_,