move KeyUsageAllows to more logical place(part2)

components/webcrypto/webcrypto_util.h

 // 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.
 
 #ifndef COMPONENTS_WEBCRYPTO_WEBCRYPTO_UTIL_H_
 #define COMPONENTS_WEBCRYPTO_WEBCRYPTO_UTIL_H_
 
 #include <stdint.h>
 #include <string>
 
@@ skipping 27 matching lines @@
 
 // Creates an import algorithm for EC keys.
 blink::WebCryptoAlgorithm CreateEcImportAlgorithm(
     blink::WebCryptoAlgorithmId id,
     blink::WebCryptoNamedCurve named_curve);
 
 // Returns true if the set bits in b make up a subset of the set bits in a.
 bool ContainsKeyUsages(blink::WebCryptoKeyUsageMask a,
                        blink::WebCryptoKeyUsageMask b);
 
-bool KeyUsageAllows(const blink::WebCryptoKey& key,
-                    const blink::WebCryptoKeyUsage usage);
-
 Status GetAesGcmTagLengthInBits(const blink::WebCryptoAesGcmParams* params,
                                 unsigned int* tag_length_bits);
 
 Status GetAesKeyGenLengthInBits(const blink::WebCryptoAesKeyGenParams* params,
                                 unsigned int* keylen_bits);
 
 Status GetHmacKeyGenLengthInBits(const blink::WebCryptoHmacKeyGenParams* params,
                                  unsigned int* keylen_bits);
 
 // Gets the requested key length in bits for an HMAC import operation.
@@ skipping 63 matching lines @@
 Status GetUsagesForGenerateAsymmetricKey(
     blink::WebCryptoKeyUsageMask combined_usages,
     blink::WebCryptoKeyUsageMask all_public_usages,
     blink::WebCryptoKeyUsageMask all_private_usages,
     blink::WebCryptoKeyUsageMask* public_usages,
     blink::WebCryptoKeyUsageMask* private_usages);
 
 }  // namespace webcrypto
 
 #endif  // COMPONENTS_WEBCRYPTO_WEBCRYPTO_UTIL_H_