[WebCrypto] Throw syntaxError if keyUsage is empty in ImportKey

content/child/webcrypto/nss/rsa_key_nss.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/nss/rsa_key_nss.h"
 
 #include <secasn1.h>
 
 #include "base/logging.h"
 #include "content/child/webcrypto/crypto_data.h"
@@ skipping 727 matching lines @@
 
   JwkRsaInfo jwk;
   Status status =
       ReadRsaKeyJwk(key_data, jwk_algorithm, extractable, usages, &jwk);
   if (status.IsError())
     return status;
 
   // Once the key type is known, verify the usages.
   status = CheckKeyCreationUsages(
       jwk.is_private_key ? all_private_key_usages_ : all_public_key_usages_,
-      usages);
+      usages, !jwk.is_private_key);
   if (status.IsError())
-    return Status::ErrorCreateKeyBadUsages();
+    return status;
 
   return jwk.is_private_key
              ? ImportRsaPrivateKey(algorithm, extractable, usages, jwk, key)
              : ImportRsaPublicKey(algorithm, extractable, usages,
                                   CryptoData(jwk.n), CryptoData(jwk.e), key);
 }
 
 Status RsaHashedAlgorithm::ExportKeyJwk(const blink::WebCryptoKey& key,
                                         std::vector<uint8_t>* buffer) const {
   const char* jwk_algorithm =
@@ skipping 99 matching lines @@
                  key->algorithm().rsaHashedParams()->publicExponent().size())) {
     return Status::ErrorUnexpected();
   }
 
   return Status::Success();
 }
 
 }  // namespace webcrypto
 
 }  // namespace content