Revert of Check that usage isn't empty when generateKey() is called

content/child/webcrypto/test/hmac_unittest.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 "base/logging.h"
 #include "base/stl_util.h"
 #include "content/child/webcrypto/algorithm_dispatch.h"
 #include "content/child/webcrypto/crypto_data.h"
 #include "content/child/webcrypto/status.h"
 #include "content/child/webcrypto/test/test_helpers.h"
@@ skipping 103 matching lines @@
 }
 
 TEST(WebCryptoHmacTest, GenerateKeyIsRandom) {
   // Generate a small sample of HMAC keys.
   std::vector<std::vector<uint8_t> > keys;
   for (int i = 0; i < 16; ++i) {
     std::vector<uint8_t> key_bytes;
     blink::WebCryptoKey key;
     blink::WebCryptoAlgorithm algorithm =
         CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha1, 512);
-    ASSERT_EQ(
-        Status::Success(),
-        GenerateSecretKey(algorithm, true, blink::WebCryptoKeyUsageSign, &key));
+    ASSERT_EQ(Status::Success(), GenerateSecretKey(algorithm, true, 0, &key));
     EXPECT_FALSE(key.isNull());
     EXPECT_TRUE(key.handle());
     EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
     EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, key.algorithm().id());
     EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
               key.algorithm().hmacParams()->hash().id());
     EXPECT_EQ(512u, key.algorithm().hmacParams()->lengthBits());
 
     std::vector<uint8_t> raw_key;
     ASSERT_EQ(Status::Success(),
               ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
     EXPECT_EQ(64U, raw_key.size());
     keys.push_back(raw_key);
   }
   // Ensure all entries in the key sample set are unique. This is a simplistic
   // estimate of whether the generated keys appear random.
   EXPECT_FALSE(CopiesExist(keys));
 }
 
 // If the key length is not provided, then the block size is used.
 TEST(WebCryptoHmacTest, GenerateKeyNoLengthSha1) {
   blink::WebCryptoKey key;
   blink::WebCryptoAlgorithm algorithm =
       CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha1, 0);
-  ASSERT_EQ(
-      Status::Success(),
-      GenerateSecretKey(algorithm, true, blink::WebCryptoKeyUsageSign, &key));
+  ASSERT_EQ(Status::Success(), GenerateSecretKey(algorithm, true, 0, &key));
   EXPECT_TRUE(key.handle());
   EXPECT_EQ(blink::WebCryptoKeyTypeSecret, key.type());
   EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, key.algorithm().id());
   EXPECT_EQ(blink::WebCryptoAlgorithmIdSha1,
             key.algorithm().hmacParams()->hash().id());
   EXPECT_EQ(512u, key.algorithm().hmacParams()->lengthBits());
   std::vector<uint8_t> raw_key;
   ASSERT_EQ(Status::Success(),
             ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
   EXPECT_EQ(64U, raw_key.size());
 }
 
 // If the key length is not provided, then the block size is used.
 TEST(WebCryptoHmacTest, GenerateKeyNoLengthSha512) {
   blink::WebCryptoKey key;
   blink::WebCryptoAlgorithm algorithm =
       CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha512, 0);
-  ASSERT_EQ(
-      Status::Success(),
-      GenerateSecretKey(algorithm, true, blink::WebCryptoKeyUsageSign, &key));
+  ASSERT_EQ(Status::Success(), GenerateSecretKey(algorithm, true, 0, &key));
   EXPECT_EQ(blink::WebCryptoAlgorithmIdHmac, key.algorithm().id());
   EXPECT_EQ(blink::WebCryptoAlgorithmIdSha512,
             key.algorithm().hmacParams()->hash().id());
   EXPECT_EQ(1024u, key.algorithm().hmacParams()->lengthBits());
   std::vector<uint8_t> raw_key;
   ASSERT_EQ(Status::Success(),
             ExportKey(blink::WebCryptoKeyFormatRaw, key, &raw_key));
   EXPECT_EQ(128U, raw_key.size());
 }
 
-TEST(WebCryptoHmacTest, GenerateKeyEmptyUsage) {
-  blink::WebCryptoKey key;
-  blink::WebCryptoAlgorithm algorithm =
-      CreateHmacKeyGenAlgorithm(blink::WebCryptoAlgorithmIdSha512, 0);
-  ASSERT_EQ(Status::ErrorCreateKeyEmptyUsages(),
-            GenerateSecretKey(algorithm, true, 0, &key));
-}
-
 TEST(WebCryptoHmacTest, ImportKeyJwkKeyOpsSignVerify) {
   blink::WebCryptoKey key;
   base::DictionaryValue dict;
   dict.SetString("kty", "oct");
   dict.SetString("k", "GADWrMRHwQfoNaXU5fZvTg==");
   base::ListValue* key_ops = new base::ListValue;
   dict.Set("key_ops", key_ops);  // Takes ownership.
 
   key_ops->AppendString("sign");
 
@@ skipping 347 matching lines @@
                 true,
                 blink::WebCryptoKeyUsageSign,
                 &key));
 }
 
 }  // namespace
 
 }  // namespace webcrypto
 
 }  // namespace content