Replace c/b/nss_context by a KeyedService.

net/ssl/client_cert_store_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_SSL_CLIENT_CERT_STORE_CHROMEOS_H_
-#define NET_SSL_CLIENT_CERT_STORE_CHROMEOS_H_
-
-#include <string>
-
-#include "crypto/scoped_nss_types.h"
-#include "net/cert/nss_profile_filter_chromeos.h"
-#include "net/ssl/client_cert_store_nss.h"
-
-namespace net {
-
-class NET_EXPORT ClientCertStoreChromeOS : public ClientCertStoreNSS {
- public:
-  // Constructs a ClientCertStore that will return client certs available on
-  // the user's private and public slots. If |use_system_slot| is true, certs on
-  // the system slot will also be returned.
-  ClientCertStoreChromeOS(
-      bool use_system_slot,
-      const std::string& username_hash,
-      const PasswordDelegateFactory& password_delegate_factory);
-  virtual ~ClientCertStoreChromeOS();
-
-  // ClientCertStoreNSS:
-  virtual void GetClientCerts(const SSLCertRequestInfo& cert_request_info,
-                              CertificateList* selected_certs,
-                              const base::Closure& callback) OVERRIDE;
-
- protected:
-  // ClientCertStoreNSS:
-  virtual void GetClientCertsImpl(CERTCertList* cert_list,
-                                  const SSLCertRequestInfo& request,
-                                  bool query_nssdb,
-                                  CertificateList* selected_certs) OVERRIDE;
-
- private:
-  void DidGetSystemAndPrivateSlot(const SSLCertRequestInfo* request,
-                                  CertificateList* selected_certs,
-                                  const base::Closure& callback,
-                                  crypto::ScopedPK11Slot system_slot,
-                                  crypto::ScopedPK11Slot private_slot);
-
-  bool use_system_slot_;
-  std::string username_hash_;
-  NSSProfileFilterChromeOS profile_filter_;
-
-  DISALLOW_COPY_AND_ASSIGN(ClientCertStoreChromeOS);
-};
-
-}  // namespace net
-
-#endif  // NET_SSL_CLIENT_CERT_STORE_CHROMEOS_H_