Extract ScopedTestNSSDB from nss_util.

crypto/scoped_test_system_nss_key_slot.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_SYSTEM_NSS_KEY_SLOT_H_
+#define CRYPTO_SCOPED_TEST_SYSTEM_NSS_KEY_SLOT_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "crypto/crypto_export.h"
+
+namespace crypto {
+
+class ScopedTestNSSDB;
+

[pneubeck (no reviews), 2014/07/23 14:34:17]

Is CRYPTO_EXPORT_PRIVATE the right export annotation for test support that is
used outside of this component?

+class CRYPTO_EXPORT_PRIVATE ScopedTestSystemNSSKeySlot {

[Ryan Sleevi, 2014/07/23 02:15:29]

Document ;)

[pneubeck (no reviews), 2014/07/23 14:34:17]

Done.

+ public:
+  explicit ScopedTestSystemNSSKeySlot();
+  ~ScopedTestSystemNSSKeySlot();
+
+  bool ConstructedSuccessfully() const;
+
+ private:
+  scoped_ptr<ScopedTestNSSDB> test_db_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedTestSystemNSSKeySlot);
+};
+
+}  // namespace crypto
+
+#endif  // CRYPTO_SCOPED_TEST_SYSTEM_NSS_KEY_SLOT_H_