[refactor] More post-NSS WebCrypto cleanups (utility functions).

components/webcrypto/algorithms/test_helpers.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 "components/webcrypto/algorithms/test_helpers.h"
 
 #include <algorithm>
 
 #include "base/files/file_util.h"
 #include "base/json/json_reader.h"
@@ skipping 627 matching lines @@
   if (curve_str == "P-384")
     return blink::WebCryptoNamedCurveP384;
   if (curve_str == "P-521")
     return blink::WebCryptoNamedCurveP521;
   else
     ADD_FAILURE() << "Unrecognized curve name: " << curve_str;
 
   return blink::WebCryptoNamedCurveP384;
 }
 
+blink::WebCryptoAlgorithm CreateHmacImportAlgorithm(
+    blink::WebCryptoAlgorithmId hash_id,
+    unsigned int length_bits) {
+  DCHECK(blink::WebCryptoAlgorithm::isHash(hash_id));
+  return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
+      blink::WebCryptoAlgorithmIdHmac,
+      new blink::WebCryptoHmacImportParams(CreateAlgorithm(hash_id), true,
+                                           length_bits));
+}
+
+blink::WebCryptoAlgorithm CreateHmacImportAlgorithmNoLength(
+    blink::WebCryptoAlgorithmId hash_id) {
+  DCHECK(blink::WebCryptoAlgorithm::isHash(hash_id));
+  return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
+      blink::WebCryptoAlgorithmIdHmac,
+      new blink::WebCryptoHmacImportParams(CreateAlgorithm(hash_id), false, 0));
+}
+
 }  // namespace webcrypto