Extract ScopedTestNSSDB from nss_util.

chrome/browser/chromeos/login/auth/parallel_authenticator_unittest.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/auth/parallel_authenticator.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 19 matching lines @@
 #include "chromeos/cryptohome/mock_async_method_caller.h"
 #include "chromeos/cryptohome/system_salt_getter.h"
 #include "chromeos/dbus/fake_cryptohome_client.h"
 #include "chromeos/dbus/fake_dbus_thread_manager.h"
 #include "chromeos/login/auth/key.h"
 #include "chromeos/login/auth/mock_auth_status_consumer.h"
 #include "chromeos/login/auth/test_attempt_state.h"
 #include "chromeos/login/auth/user_context.h"
 #include "components/user_manager/user.h"
 #include "content/public/test/test_browser_thread_bundle.h"
-#include "crypto/nss_util.h"
 #include "crypto/nss_util_internal.h"
+#include "crypto/scoped_test_nss_chromeos_user.h"
 #include "google_apis/gaia/mock_url_fetcher_factory.h"
 #include "net/base/net_errors.h"
 #include "net/url_request/url_request_status.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 #include "url/gurl.h"
 
 using ::testing::Invoke;
 using ::testing::Return;
@@ skipping 684 matching lines @@
   mock_caller_->SetUp(true, cryptohome::MOUNT_ERROR_NONE);
   EXPECT_CALL(*mock_caller_, AsyncCheckKey(user_context_.GetUserID(), _, _))
       .Times(1)
       .RetiresOnSaturation();
 
   auth_->AuthenticateToUnlock(user_context_);
   base::MessageLoop::current()->Run();
 }
 
 }  // namespace chromeos