cros: Fix API 'add' password and complete auth racing

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 f4e0e9376561e327964447683f5805aa2cfac39a..b9cfd2089858467bf462bb550c8125f49d5e1a34 100644
--- a/chrome/browser/resources/gaia_auth_host/authenticator.js
+++ b/chrome/browser/resources/gaia_auth_host/authenticator.js
@@ -163,6 +163,9 @@ cr.define('cr.login', function() {
     this.samlHandler_.addEventListener(
         'videoEnabled',
         this.onVideoEnabled_.bind(this));
+    this.samlHandler_.addEventListener(
+        'apiPasswordAdded',
+        this.onSamlApiPasswordAdded_.bind(this));
 
     this.webview_.addEventListener('droplink', this.onDropLink_.bind(this));
     this.webview_.addEventListener(
@@ -755,6 +758,18 @@ cr.define('cr.login', function() {
   };
 
   /**
+   * Invoked when |samlHandler_| fires 'apiPasswordAdded' event.
+   * @private
+   */
+  Authenticator.prototype.onSamlApiPasswordAdded_ = function(e) {
+    // Saml API 'add' password might be received after the 'loadcommit' event.
+    // In such case, maybeCompleteAuth_ should be attempted again if oauth code
+    // is available.
+    if (this.oauthCode_)
+      this.maybeCompleteAuth_();
+  };
+
+  /**
    * Invoked when a link is dropped on the webview.
    * @private
    */