Refactor WebCrypto code

content/child/webcrypto/openssl/key_openssl.h

+// Copyright 2014 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 CONTENT_CHILD_WEBCRYPTO_OPENSSL_KEY_OPENSSL_H_
+#define CONTENT_CHILD_WEBCRYPTO_OPENSSL_KEY_OPENSSL_H_
+
+#include "content/child/webcrypto/algorithm_implementation.h"
+
+namespace content {
+
+namespace webcrypto {
+
+class SymKeyOpenSsl;
+
+// Base key class for all OpenSSL keys, used to safely cast between types. Each
+// key maintains a copy of its serialized form in either 'raw', 'pkcs8', or
+// 'spki' format. This is to allow structured cloning of keys synchronously from
+// the target Blink thread without having to lock access to the key.
+class KeyOpenSsl : public blink::WebCryptoKeyHandle {
+ public:
+  explicit KeyOpenSsl(const CryptoData& serialized_key_data);
+  virtual ~KeyOpenSsl();
+
+  virtual SymKeyOpenSsl* AsSymKey();
+
+  const std::vector<uint8>& serialized_key_data() const {
+    return serialized_key_data_;
+  }
+
+ private:
+  const std::vector<uint8> serialized_key_data_;
+};
+
+class SymKeyOpenSsl : public KeyOpenSsl {
+ public:
+  virtual ~SymKeyOpenSsl();
+  explicit SymKeyOpenSsl(const CryptoData& raw_key_data);
+
+  static SymKeyOpenSsl* Cast(const blink::WebCryptoKey& key);
+
+  virtual SymKeyOpenSsl* AsSymKey() OVERRIDE;
+
+  const std::vector<uint8>& raw_key_data() const {
+    return serialized_key_data();
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SymKeyOpenSsl);
+};
+
+}  // namespace webcrypto
+
+}  // namespace content
+
+#endif  // CONTENT_CHILD_WEBCRYPTO_OPENSSL_KEY_OPENSSL_H_