[cros] UserManager cleanup regarding stub/demo users.

chrome/browser/chromeos/login/login_status_consumer.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_LOGIN_STATUS_CONSUMER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_STATUS_CONSUMER_H_
 
 #include <string>
 
 #include "base/logging.h"
 #include "chrome/common/net/gaia/gaia_auth_consumer.h"
 #include "chrome/common/net/gaia/google_service_auth_error.h"
 #include "net/base/net_errors.h"
 
 namespace chromeos {
 
-// This is used in various authenticator classes.
-const char kDemoUser[] = "demouser";
-
 class LoginFailure {
  public:
   enum FailureReason {
     NONE,
     COULD_NOT_MOUNT_CRYPTOHOME,
     COULD_NOT_MOUNT_TMPFS,
     COULD_NOT_UNMOUNT_CRYPTOHOME,
     DATA_REMOVAL_FAILED,    // Could not destroy your old data
     LOGIN_TIMED_OUT,
     UNLOCK_FAILED,
@@ skipping 97 matching lines @@
       bool using_oauth) = 0;
   // The current guest login attempt has succeeded.
   virtual void OnOffTheRecordLoginSuccess() {}
   // The same password didn't work both online and offline.
   virtual void OnPasswordChangeDetected();
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_STATUS_CONSUMER_H_