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

components/webcrypto/algorithms/test_helpers.cc

Index: components/webcrypto/algorithms/test_helpers.cc
diff --git a/components/webcrypto/algorithms/test_helpers.cc b/components/webcrypto/algorithms/test_helpers.cc
index 9aa0e41769f1a6de559c034aa2619744b9d3a949..b096ac3786d6d606b2325d4c458ad8db9e28bcfc 100644
--- a/components/webcrypto/algorithms/test_helpers.cc
+++ b/components/webcrypto/algorithms/test_helpers.cc
@@ -645,4 +645,22 @@ blink::WebCryptoNamedCurve GetCurveNameFromDictionary(
   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