Replace c/b/nss_context by a KeyedService.

net/cert/nss_profile_filter_chromeos.h

 // Copyright 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 NET_CERT_NSS_PROFILE_FILTER_CHROMEOS_H_
 #define NET_CERT_NSS_PROFILE_FILTER_CHROMEOS_H_
 
+#include "base/callback_forward.h"
+#include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "crypto/scoped_nss_types.h"
 #include "net/base/crypto_module.h"
 #include "net/base/net_export.h"
 
 namespace net {
 
 class X509Certificate;
 
 // On ChromeOS each user has separate NSS databases, which are loaded
@@ skipping 43 matching lines @@
    private:
     const NSSProfileFilterChromeOS& filter_;
   };
 
  private:
   crypto::ScopedPK11Slot public_slot_;
   crypto::ScopedPK11Slot private_slot_;
   crypto::ScopedPK11Slot system_slot_;
 };
 
+class NET_EXPORT NSSProfileFilterChromeOSFactory {
+ public:
+  virtual ~NSSProfileFilterChromeOSFactory() {}
+  virtual scoped_ptr<NSSProfileFilterChromeOS> CreateFilter(
+      const base::Callback<void(const NSSProfileFilterChromeOS&)>&) = 0;
+
+ private:
+  DISALLOW_ASSIGN(NSSProfileFilterChromeOSFactory);
+};
+
 }  // namespace net
 
 #endif  // NET_CERT_NSS_PROFILE_FILTER_CHROMEOS_H_