*WIP* Store NSS slots per profile. Move keygen to chrome.

chrome/browser/net/nss_slot_factory.h

Index: chrome/browser/net/nss_slot_factory.h
diff --git a/chrome/browser/net/nss_slot_factory.h b/chrome/browser/net/nss_slot_factory.h
new file mode 100644
index 0000000000000000000000000000000000000000..e315f46d8b4cac49e0a8aa4dba7449f8d6df4928
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+++ b/chrome/browser/net/nss_slot_factory.h
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+// 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_SLOT_FACTORY_H_
+#define CHROME_BROWSER_NET_NSS_SLOT_FACTORY_H_
+
+#include "base/callback.h"
+#include "crypto/scoped_nss_types.h"
+
+namespace content {
+class ResourceContext;
+}
+namespace net {
+class NSSCertDatabase;
+}
+
+// XXX  how should these interact with tests (should they return the
+// ScopedTestNSSDB if it's active?)
+
+// Returns a reference to the public slot for |context|.
+// Should be called only on the IO thread.
+crypto::ScopedPK11Slot GetPublicNSSKeySlotForResourceContext(
+    content::ResourceContext* context);
+
+// Returns a reference to the private slot for |context|.
+// Should be called only on the IO thread.
+// May return NULL if the slot is not ready yet.
+crypto::ScopedPK11Slot GetPrivateNSSKeySlotForResourceContext(
+    content::ResourceContext* context);
+
+// 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);
+
+// Get a NSSCertDatabase for the given |context|.
+void GetNSSCertDatabaseForResourceContext(
+    content::ResourceContext* context,
+    const base::Callback<void(net::NSSCertDatabase*)>& callback);
+
+
+#endif  // CHROME_BROWSER_NET_NSS_SLOT_FACTORY_H_