[WebCrypto] Throw syntaxError if keyUsage is empty in ImportKey

content/child/webcrypto/test/aes_kw_unittest.cc

Index: content/child/webcrypto/test/aes_kw_unittest.cc
diff --git a/content/child/webcrypto/test/aes_kw_unittest.cc b/content/child/webcrypto/test/aes_kw_unittest.cc
index db56c11f91ad0140868f4e79d35692379bfe1dd7..9ec6cffb29cdb5842e71243e42870e52bc3f5edb 100644
--- a/content/child/webcrypto/test/aes_kw_unittest.cc
+++ b/content/child/webcrypto/test/aes_kw_unittest.cc
@@ -40,6 +40,15 @@ TEST(WebCryptoAesKwTest, GenerateKeyEmptyUsage) {
             GenerateSecretKey(CreateAesKwKeyGenAlgorithm(256), true, 0, &key));
 }
 
+TEST(WebCryptoAesKwTest, ImportKeyEmptyUsage) {
+  blink::WebCryptoKey key;
+  EXPECT_EQ(Status::ErrorImportKeyEmptyUsages(),
+            ImportKey(blink::WebCryptoKeyFormatRaw,
+                      CryptoData(std::vector<uint8_t>(16)),
+                      CreateAlgorithm(blink::WebCryptoAlgorithmIdAesKw),
+                      true, 0, &key));
+}
+
 TEST(WebCryptoAesKwTest, ImportKeyJwkKeyOpsWrapUnwrap) {
   blink::WebCryptoKey key;
   base::DictionaryValue dict;