Support for the new WebCrypto digest by chunks API.

content/child/webcrypto/shared_crypto.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/shared_crypto.h"
 
 #include "base/logging.h"
 #include "content/child/webcrypto/crypto_data.h"
 #include "content/child/webcrypto/jwk.h"
 #include "content/child/webcrypto/platform_crypto.h"
@@ skipping 517 matching lines @@
     case blink::WebCryptoAlgorithmIdSha1:
     case blink::WebCryptoAlgorithmIdSha256:
     case blink::WebCryptoAlgorithmIdSha384:
     case blink::WebCryptoAlgorithmIdSha512:
       return platform::DigestSha(algorithm.id(), data, buffer);
     default:
       return Status::ErrorUnsupported();
   }
 }
 
+scoped_ptr<blink::WebCryptoDigestor> CreateDigestor(
+    blink::WebCryptoAlgorithmId algorithm) {
+  return platform::CreateDigestor(algorithm);
+}
+
 Status GenerateSecretKey(const blink::WebCryptoAlgorithm& algorithm,
                          bool extractable,
                          blink::WebCryptoKeyUsageMask usage_mask,
                          blink::WebCryptoKey* key) {
   unsigned int keylen_bytes = 0;
 
   // Get the secret key length in bytes from generation parameters.
   // This resolves any defaults.
   switch (algorithm.id()) {
     case blink::WebCryptoAlgorithmIdAesCbc:
@@ skipping 275 matching lines @@
                             key);
   if (status.IsError())
     return status;
 
   return ValidateDeserializedKey(*key, algorithm, type);
 }
 
 }  // namespace webcrypto
 
 }  // namespace content