Reland "Cut down /crypto and switch what is left of it to boringssl".

crypto/scoped_test_nss_db.h

-// Copyright 2014 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_SCOPED_TEST_NSS_DB_H_
-#define CRYPTO_SCOPED_TEST_NSS_DB_H_
-
-#include "base/files/scoped_temp_dir.h"
-#include "base/macros.h"
-#include "crypto/crypto_export.h"
-#include "crypto/scoped_nss_types.h"
-
-namespace crypto {
-
-// Opens a persistent NSS database in a temporary directory.
-// Prior NSS version 3.15.1, because of http://bugzil.la/875601 , the opened DB
-// will not be closed automatically.
-class CRYPTO_EXPORT_PRIVATE ScopedTestNSSDB {
- public:
-  ScopedTestNSSDB();
-  ~ScopedTestNSSDB();
-
-  bool is_open() const { return slot_; }
-  PK11SlotInfo* slot() const { return slot_.get(); }
-
- private:
-  base::ScopedTempDir temp_dir_;
-  ScopedPK11Slot slot_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedTestNSSDB);
-};
-
-}  // namespace crypto
-
-#endif  // CRYPTO_SCOPED_TEST_NSS_DB_H_