[WebCrypto] Throw syntaxError if keyUsage is empty in ImportKey

content/child/webcrypto/nss/hmac_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 <cryptohi.h>
 #include <pk11pub.h>
 #include <secerr.h>
 #include <sechash.h>
 
 #include "base/logging.h"
@@ skipping 66 matching lines @@
       return status;
 
     return GenerateSecretKeyNss(
         blink::WebCryptoKeyAlgorithm::createHmac(hash.id(), keylen_bits),
         extractable, usages, keylen_bits / 8, mechanism, result);
   }
 
   Status VerifyKeyUsagesBeforeImportKey(
       blink::WebCryptoKeyFormat format,
       blink::WebCryptoKeyUsageMask usages) const override {
+    bool checkEmptyUsage = true;
     switch (format) {
       case blink::WebCryptoKeyFormatRaw:
       case blink::WebCryptoKeyFormatJwk:
-        return CheckKeyCreationUsages(kAllKeyUsages, usages);
+        return CheckKeyCreationUsages(kAllKeyUsages, usages, checkEmptyUsage);
       default:
         return Status::ErrorUnsupportedImportKeyFormat();
     }
   }
 
   Status ImportKeyRaw(const CryptoData& key_data,
                       const blink::WebCryptoAlgorithm& algorithm,
                       bool extractable,
                       blink::WebCryptoKeyUsageMask usages,
                       blink::WebCryptoKey* key) const override {
@@ skipping 135 matching lines @@
 
 }  // namespace
 
 AlgorithmImplementation* CreatePlatformHmacImplementation() {
   return new HmacImplementation;
 }
 
 }  // namespace webcrypto
 
 }  // namespace content