Remove passphrase dialog and last parts of elevation.

chrome/browser/managed_mode/managed_user_passphrase.h

-// Copyright (c) 2013 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_MANAGED_MODE_MANAGED_USER_PASSPHRASE_H_
-#define CHROME_BROWSER_MANAGED_MODE_MANAGED_USER_PASSPHRASE_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-
-// This class can be used to derive a hash of a provided passphrase. When an
-// empty salt is given as parameter to the constructor, a new salt is
-// generated randomly, which can be accessed through the |GetSalt| method.
-class ManagedUserPassphrase {
- public:
-  explicit ManagedUserPassphrase(const std::string& salt);
-  ~ManagedUserPassphrase();
-
-  std::string GetSalt();
-
-  // This function generates a hash from a passphrase, which should be provided
-  // as the first parameter. On return, the second parameter will contain the
-  // Base64-encoded hash of the password.
-  bool GenerateHashFromPassphrase(const std::string& passphrase,
-                                  std::string* encoded_passphrase_hash) const;
-
- private:
-  bool GetPassphraseHash(const std::string& passphrase,
-                         std::string* passphrase_hash) const;
-  void GenerateRandomSalt();
-
-  std::string salt_;
-
-  DISALLOW_COPY_AND_ASSIGN(ManagedUserPassphrase);
-};
-
-#endif  // CHROME_BROWSER_MANAGED_MODE_MANAGED_USER_PASSPHRASE_H_