Add a utility method to convert SPKI from DER to JWK, so far implemented only for EC P256v1 (which …

net/cert/jwk_serializer_openssl.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 "base/logging.h"
+#include "net/cert/jwk_serializer.h"
+
+namespace net {
+
+namespace JwkSerializer {
+
+bool ConvertSPKIFromDERToJWK(
+    const base::StringPiece& spki_der,
+    base::DictionaryValue* public_key_jwk) {
+  // TODO(juanlang): implement
+  NOTIMPLEMENTED();
+  return false;
+}
+
+}  // namespace JwkSerializer
+
+}  // namespace net