webcrypto: Add ECDSA algorithm (chromium-side)

content/child/webcrypto/webcrypto_util.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_WEBCRYPTO_UTIL_H_
 #define CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_UTIL_H_
 
 #include <stdint.h>
 #include <string>
 
@@ skipping 26 matching lines @@
 // algorithm that is not SHA*.
 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateHmacImportAlgorithm(
     blink::WebCryptoAlgorithmId hash_id);
 
 // Creates an import algorithm for RSA algorithms that take a hash.
 // It is an error to call this with a hash_id that is not a SHA*.
 CONTENT_EXPORT blink::WebCryptoAlgorithm CreateRsaHashedImportAlgorithm(
     blink::WebCryptoAlgorithmId id,
     blink::WebCryptoAlgorithmId hash_id);
 
+// Creates an import algorithm for EC keys.
+CONTENT_EXPORT blink::WebCryptoAlgorithm CreateEcImportAlgorithm(
+    blink::WebCryptoAlgorithmId id,
+    blink::WebCryptoNamedCurve named_curve);
+
 // Returns true if the set bits in b make up a subset of the set bits in a.
 bool ContainsKeyUsages(blink::WebCryptoKeyUsageMask a,
                        blink::WebCryptoKeyUsageMask b);
 
 bool KeyUsageAllows(const blink::WebCryptoKey& key,
                     const blink::WebCryptoKeyUsage usage);
 
 Status GetAesGcmTagLengthInBits(const blink::WebCryptoAesGcmParams* params,
                                 unsigned int* tag_length_bits);
 
@@ skipping 17 matching lines @@
 Status GetRsaKeyGenParameters(
     const blink::WebCryptoRsaHashedKeyGenParams* params,
     unsigned int* public_exponent,
     unsigned int* modulus_length_bits);
 
 }  // namespace webcrypto
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEBCRYPTO_WEBCRYPTO_UTIL_H_