Support for the new WebCrypto digest by chunks API.

content/child/webcrypto/webcrypto_impl.cc

 // 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.
 
 #include "content/child/webcrypto/webcrypto_impl.h"
 
 #include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
 #include "content/child/webcrypto/crypto_data.h"
 #include "content/child/webcrypto/shared_crypto.h"
 #include "content/child/webcrypto/status.h"
 #include "content/child/webcrypto/webcrypto_util.h"
 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 
 namespace content {
 
 using webcrypto::Status;
@@ skipping 223 matching lines @@
     const unsigned char* data,
     unsigned int data_size,
     blink::WebArrayBuffer& result) {
   blink::WebCryptoAlgorithm algorithm =
       blink::WebCryptoAlgorithm::adoptParamsAndCreate(algorithm_id, NULL);
   return (webcrypto::Digest(
               algorithm, webcrypto::CryptoData(data, data_size), &result))
       .IsSuccess();
 }
 
+blink::WebCryptoDigestor* WebCryptoImpl::createDigestor(
+    const blink::WebCryptoAlgorithmId algorithm_id) {
+  return webcrypto::CreateDigestor(algorithm_id).release();
+}
+
 bool WebCryptoImpl::deserializeKeyForClone(
     const blink::WebCryptoKeyAlgorithm& algorithm,
     blink::WebCryptoKeyType type,
     bool extractable,
     blink::WebCryptoKeyUsageMask usages,
     const unsigned char* key_data,
     unsigned key_data_size,
     blink::WebCryptoKey& key) {
   Status status = webcrypto::DeserializeKeyForClone(
       algorithm,
       type,
       extractable,
       usages,
       webcrypto::CryptoData(key_data, key_data_size),
       &key);
   return status.IsSuccess();
 }
 
 bool WebCryptoImpl::serializeKeyForClone(
     const blink::WebCryptoKey& key,
     blink::WebVector<unsigned char>& key_data) {
   Status status = webcrypto::SerializeKeyForClone(key, &key_data);
   return status.IsSuccess();
 }
 
 }  // namespace content