Initialize per-ChromeOS-user NSS slots and provide the functions to access them.

chrome/browser/net/nss_context.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_NET_NSS_CONTEXT_H_
+#define CHROME_BROWSER_NET_NSS_CONTEXT_H_
+
+#include <string>
+
+#include "base/callback.h"
+#include "crypto/scoped_nss_types.h"
+
+namespace content {
+class ResourceContext;
+}  // namespace content
+
+// Runs |callback| with the private slot handle when the private slot is loaded.
+// If the slot is already loaded, the |callback| will be run synchronously.
+// Should be called only on the IO thread.
+void OnPrivateNSSKeySlotForResourceContextReady(
+    content::ResourceContext* context,
+    const base::Callback<void(crypto::ScopedPK11Slot)>& callback);
+
+// Runs |callback| with the public and private slot handles when the slots are
+// loaded. If the slots are already loaded, the |callback| will be run
+// synchronously. Should be called only on the IO thread.
+void OnNSSKeySlotsForResourceContextReady(
+    content::ResourceContext* context,
+    const base::Callback<
+        void(crypto::ScopedPK11Slot, crypto::ScopedPK11Slot)>& callback);
+
+#endif  // CHROME_BROWSER_NET_NSS_CONTEXT_H_