Replace c/b/nss_context by a KeyedService.

components/cert_database/linux/cert_database_service_io_part_linux.cc

Index: components/cert_database/linux/cert_database_service_io_part_linux.cc
diff --git a/components/cert_database/linux/cert_database_service_io_part_linux.cc b/components/cert_database/linux/cert_database_service_io_part_linux.cc
new file mode 100644
index 0000000000000000000000000000000000000000..cbf35616aed0edc25c55ff6730d2b5a72a685e5a
--- /dev/null
+++ b/components/cert_database/linux/cert_database_service_io_part_linux.cc
@@ -0,0 +1,28 @@
+// 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 "components/cert_database/public/linux/cert_database_service_io_part_linux.h"
+
+#include "crypto/nss_util_internal.h"
+#include "net/cert/nss_cert_database.h"
+
+namespace cert_database {
+
+CertDatabaseServiceIOPartLinux::CertDatabaseServiceIOPartLinux() {
+}
+
+CertDatabaseServiceIOPartLinux::~CertDatabaseServiceIOPartLinux() {
+}
+
+void CertDatabaseServiceIOPartLinux::Init() {
+  CertDatabaseServiceIOPart::Init();
+
+  SetNSSCertDatabase(make_scoped_ptr(new net::NSSCertDatabase(
+      crypto::ScopedPK11Slot(
+          crypto::GetPersistentNSSKeySlot()) /* public slot */,
+      crypto::ScopedPK11Slot(
+          crypto::GetPersistentNSSKeySlot()) /* private slot */)));
+}
+
+}  // namespace cert_database