[webcrypto] Implement structured clone of keys (chromium-side).

content/child/webcrypto/shared_crypto.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_SHARED_CRYPTO_H_
 #define CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "content/common/content_export.h"
@@ skipping 133 matching lines @@
 CONTENT_EXPORT Status
     UnwrapKey(blink::WebCryptoKeyFormat format,
               const CryptoData& wrapped_key_data,
               const blink::WebCryptoKey& wrapping_key,
               const blink::WebCryptoAlgorithm& wrapping_algorithm,
               const blink::WebCryptoAlgorithm& algorithm_or_null,
               bool extractable,
               blink::WebCryptoKeyUsageMask usage_mask,
               blink::WebCryptoKey* key);
 
+CONTENT_EXPORT Status
+    SerializeKeyForClone(const blink::WebCryptoKey& key,
+                         blink::WebVector<unsigned char>* data);
+
+CONTENT_EXPORT Status
+    DeserializeKeyForClone(const blink::WebCryptoKeyAlgorithm& algorithm,
+                           blink::WebCryptoKeyType type,
+                           bool extractable,
+                           blink::WebCryptoKeyUsageMask usage_mask,
+                           const CryptoData& key_data,
+                           blink::WebCryptoKey* key);
+
 }  // namespace webcrypto
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_