[WebCrypto] Throw syntaxError if keyUsage is empty in ImportKey

content/child/webcrypto/nss/hmac_nss.cc

Index: content/child/webcrypto/nss/hmac_nss.cc
diff --git a/content/child/webcrypto/nss/hmac_nss.cc b/content/child/webcrypto/nss/hmac_nss.cc
index 89e208666f97715077ace1b16fc9bc3d9c819711..570f8c8d7dc5964291b7606d69d2dbc4baf25edb 100644
--- a/content/child/webcrypto/nss/hmac_nss.cc
+++ b/content/child/webcrypto/nss/hmac_nss.cc
@@ -58,7 +58,7 @@ class HmacImplementation : public AlgorithmImplementation {
                      bool extractable,
                      blink::WebCryptoKeyUsageMask usages,
                      GenerateKeyResult* result) const override {
-    Status status = CheckKeyCreationUsages(kAllKeyUsages, usages);
+    Status status = CheckKeyCreationUsages(kAllKeyUsages, usages, false);
     if (status.IsError())
       return status;
 
@@ -86,7 +86,7 @@ class HmacImplementation : public AlgorithmImplementation {
     switch (format) {
       case blink::WebCryptoKeyFormatRaw:
       case blink::WebCryptoKeyFormatJwk:
-        return CheckKeyCreationUsages(kAllKeyUsages, usages);
+        return CheckKeyCreationUsages(kAllKeyUsages, usages, false);
       default:
         return Status::ErrorUnsupportedImportKeyFormat();
     }