Allow re-enrollment to the same domain in case of policy data loss.

chrome/browser/chromeos/login/authenticator.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_CHROMEOS_LOGIN_AUTHENTICATOR_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_AUTHENTICATOR_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
@@ skipping 83 matching lines @@
   // that gmail does not consider '.' or caps inside a username to matter.
   // It also ignores everything after a '+'.
   // For example, c.masone+abc@gmail.com == cMaSone@gmail.com, per
   // http://mail.google.com/support/bin/answer.py?hl=en&ctx=mail&answer=10313#
   static std::string Canonicalize(const std::string& email_address);
 
   // Sanitize emails. Currently, it only ensures all emails have a domain by
   // adding gmail.com if no domain is present.
   static std::string Sanitize(const std::string& email_address);
 
+  // Extract the domain part from the canonical form of the given email.
+  static std::string ExtractDomainName(const std::string& email);
+
  protected:
   LoginStatusConsumer* consumer_;
   Profile* authentication_profile_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Authenticator);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_AUTHENTICATOR_H_