net: extract net/cert out of net/base

net/base/x509_certificate_net_log_param.cc

-// Copyright (c) 2012 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 "net/base/x509_certificate_net_log_param.h"
-
-#include <string>
-#include <vector>
-
-#include "base/values.h"
-#include "net/base/x509_certificate.h"
-
-namespace net {
-
-base::Value* NetLogX509CertificateCallback(const X509Certificate* certificate,
-                                           NetLog::LogLevel log_level) {
-  base::DictionaryValue* dict = new base::DictionaryValue();
-  base::ListValue* certs = new base::ListValue();
-  std::vector<std::string> encoded_chain;
-  certificate->GetPEMEncodedChain(&encoded_chain);
-  for (size_t i = 0; i < encoded_chain.size(); ++i)
-    certs->Append(new base::StringValue(encoded_chain[i]));
-  dict->Set("certificates", certs);
-  return dict;
-}
-
-}  // namespace net