[refactor] Replace custom utility function with base's "vector_as_array()"

content/child/webcrypto/nss/rsa_oaep_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 <keyhi.h>
 #include <pk11pub.h>
 #include <secerr.h>
 #include <sechash.h>
 
+#include "base/stl_util.h"
 #include "content/child/webcrypto/crypto_data.h"
 #include "content/child/webcrypto/nss/key_nss.h"
 #include "content/child/webcrypto/nss/rsa_key_nss.h"
 #include "content/child/webcrypto/nss/util_nss.h"
 #include "content/child/webcrypto/status.h"
 #include "content/child/webcrypto/webcrypto_util.h"
 #include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
 #include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
 
 namespace content {
@@ skipping 68 matching lines @@
   CK_RSA_PKCS_OAEP_PARAMS oaep_params = {0};
   if (!InitializeRsaOaepParams(hash, label, &oaep_params))
     return Status::ErrorUnsupported();
 
   SECItem param;
   param.type = siBuffer;
   param.data = reinterpret_cast<unsigned char*>(&oaep_params);
   param.len = sizeof(oaep_params);
 
   buffer->resize(SECKEY_PublicKeyStrength(key));
-  unsigned char* buffer_data = Uint8VectorStart(buffer);
+  unsigned char* buffer_data = vector_as_array(buffer);
   unsigned int output_len;
   if (NssRuntimeSupport::Get()->pk11_pub_encrypt_func()(key,
                                                         CKM_RSA_PKCS_OAEP,
                                                         &param,
                                                         buffer_data,
                                                         &output_len,
                                                         buffer->size(),
                                                         data.bytes(),
                                                         data.byte_length(),
                                                         NULL) != SECSuccess) {
@@ skipping 22 matching lines @@
   param.type = siBuffer;
   param.data = reinterpret_cast<unsigned char*>(&oaep_params);
   param.len = sizeof(oaep_params);
 
   const int modulus_length_bytes = PK11_GetPrivateModulusLen(key);
   if (modulus_length_bytes <= 0)
     return Status::ErrorUnexpected();
 
   buffer->resize(modulus_length_bytes);
 
-  unsigned char* buffer_data = Uint8VectorStart(buffer);
+  unsigned char* buffer_data = vector_as_array(buffer);
   unsigned int output_len;
   if (NssRuntimeSupport::Get()->pk11_priv_decrypt_func()(key,
                                                          CKM_RSA_PKCS_OAEP,
                                                          &param,
                                                          buffer_data,
                                                          &output_len,
                                                          buffer->size(),
                                                          data.bytes(),
                                                          data.byte_length()) !=
       SECSuccess) {
@@ skipping 84 matching lines @@
 
 }  // namespace
 
 AlgorithmImplementation* CreatePlatformRsaOaepImplementation() {
   return new RsaOaepImplementation;
 }
 
 }  // namespace webcrypto
 
 }  // namespace content