[webcrypto] Change HMAC key generation length from bytes to bits.

content/child/webcrypto/shared_crypto_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 "content/child/webcrypto/shared_crypto.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 92 matching lines @@
                                        true,
                                        tag_length_bits));
 }
 
 // Creates an HMAC algorithm whose parameters struct is compatible with key
 // generation. It is an error to call this with a hash_id that is not a SHA*.
 // The key_length_bits parameter is optional, with zero meaning unspecified.
 blink::WebCryptoAlgorithm CreateHmacKeyGenAlgorithm(
     blink::WebCryptoAlgorithmId hash_id,
     unsigned int key_length_bits) {
-#if !defined(WEBCRYPTO_HMAC_BITS)
-  // TODO(eroman): Delete
-  key_length_bits /= 8;
-#endif
   DCHECK(IsHashAlgorithm(hash_id));
   // key_length_bytes == 0 means unspecified
   return blink::WebCryptoAlgorithm::adoptParamsAndCreate(
       blink::WebCryptoAlgorithmIdHmac,
       new blink::WebCryptoHmacKeyGenParams(
           CreateAlgorithm(hash_id), (key_length_bits != 0), key_length_bits));
 }
 
 // Returns a slightly modified version of the input vector.
 //
@@ skipping 2181 matching lines @@
                                         test_cipher_text,
                                         test_authentication_tag,
                                         &plain_text));
     }
   }
 }
 
 }  // namespace webcrypto
 
 }  // namespace content