Address bug where the one-click sign-in bar would never show again once

chrome/browser/password_manager/password_form_manager.h

 // 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.
 
 #ifndef CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_FORM_MANAGER_H_
 #define CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_FORM_MANAGER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 86 matching lines @@
   // Handles save-as-new or update of the form managed by this manager.
   // Note the basic data of updated_credentials must match that of
   // observed_form_ (e.g DoesManage(pending_credentials_) == true).
   void Save();
 
   // Call these if/when we know the form submission worked or failed.
   // These routines are used to update internal statistics ("ActionsTaken").
   void SubmitPassed();
   void SubmitFailed();
 
+  // Return the username associated with the credentials.
+  const string16& associated_username() const {
+    return pending_credentials_.username_value;
+  }
+
   // Returns the realm URL for the form managed my this manager.
   const std::string& realm() const {
     return pending_credentials_.signon_realm;
   }
 
  private:
   friend class PasswordFormManagerTest;
 
   // ManagerAction - What does the manager do with this form? Either it
   // fills it, or it doesn't. If it doesn't fill it, that's either
@@ skipping 132 matching lines @@
   // These three fields record the "ActionsTaken" by the browser and
   // the user with this form, and the result. They are combined and
   // recorded in UMA when the manager is destroyed.
   ManagerAction manager_action_;
   UserAction user_action_;
   SubmitResult submit_result_;
 
   DISALLOW_COPY_AND_ASSIGN(PasswordFormManager);
 };
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_PASSWORD_FORM_MANAGER_H_