Skip the SAML confirm password screen when a single password is scraped

chrome/browser/resources/gaia_auth_host/saml_handler.js

Index: chrome/browser/resources/gaia_auth_host/saml_handler.js
diff --git a/chrome/browser/resources/gaia_auth_host/saml_handler.js b/chrome/browser/resources/gaia_auth_host/saml_handler.js
index 70486c7e06457057d120cda06897182f992da68a..89935284e6fbdd9f51dfe408df5c5ea334c1078f 100644
--- a/chrome/browser/resources/gaia_auth_host/saml_handler.js
+++ b/chrome/browser/resources/gaia_auth_host/saml_handler.js
@@ -198,6 +198,15 @@ cr.define('cr.login', function() {
     },
 
     /**
+     * Returns the first scraped password if any, or an empty string otherwise.
+     * @return {string}
+     */
+    get firstScrapedPassword() {
+      var scraped = this.getConsolidatedScrapedPasswords_();
+      return scraped.length ? scraped[0] : '';
+    },
+
+    /**
      * Returns the number of scraped passwords.
      * @return {number}
      */