[WebCrypto] Throw syntaxError if keyUsage is empty in ImportKey

content/child/webcrypto/nss/rsa_key_nss.cc

Index: content/child/webcrypto/nss/rsa_key_nss.cc
diff --git a/content/child/webcrypto/nss/rsa_key_nss.cc b/content/child/webcrypto/nss/rsa_key_nss.cc
index 943d18f124aa7c8a9384392abb07ed374daaf5b1..3214fb87b368cfb47725d2c08e6ddff51a4a06ae 100644
--- a/content/child/webcrypto/nss/rsa_key_nss.cc
+++ b/content/child/webcrypto/nss/rsa_key_nss.cc
@@ -745,9 +745,9 @@ Status RsaHashedAlgorithm::ImportKeyJwk(
   // 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)