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

chrome/browser/net/nss_context_linux.cc

+// 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.
+
+#include "chrome/browser/net/nss_context.h"
+
+#include "content/public/browser/browser_thread.h"
+#include "crypto/nss_util_internal.h"
+
+crypto::ScopedPK11Slot GetPublicNSSKeySlotForResourceContext(
+    content::ResourceContext* context) {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
+  return crypto::ScopedPK11Slot(crypto::GetPublicNSSKeySlot());
+}
+
+crypto::ScopedPK11Slot GetPrivateNSSKeySlotForResourceContext(
+    content::ResourceContext* context,
+    const base::Callback<void(crypto::ScopedPK11Slot)>& callback) {
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
+  return crypto::ScopedPK11Slot(crypto::GetPrivateNSSKeySlot());
+}