Update keygen to use correct NSS slot on ChromeOS multiprofile.

crypto/crypto_module_blocking_password_delegate.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 CRYPTO_CRYPTO_MODULE_BLOCKING_PASSWORD_DELEGATE_H_
-#define CRYPTO_CRYPTO_MODULE_BLOCKING_PASSWORD_DELEGATE_H_
-
-#include <string>
-
-namespace crypto {
-
-// PK11_SetPasswordFunc is a global setting.  An implementation of
-// CryptoModuleBlockingPasswordDelegate should be passed as the user data
-// argument (|wincx|) to relevant NSS functions, which the global password
-// handler will call to do the actual work.
-class CryptoModuleBlockingPasswordDelegate {
- public:
-  virtual ~CryptoModuleBlockingPasswordDelegate() {}
-
-  // Requests a password to unlock |slot_name|. The interface is
-  // synchronous because NSS cannot issue an asynchronous
-  // request. |retry| is true if this is a request for the retry
-  // and we previously returned the wrong password.
-  // The implementation should set |*cancelled| to true if the user cancelled
-  // instead of entering a password, otherwise it should return the password the
-  // user entered.
-  virtual std::string RequestPassword(const std::string& slot_name, bool retry,
-                                      bool* cancelled) = 0;
-};
-
-}  // namespace crypto
-
-#endif  // CRYPTO_CRYPTO_MODULE_BLOCKING_PASSWORD_DELEGATE_H_