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

content/child/webcrypto/openssl/sha_openssl.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 <vector>
 #include <openssl/evp.h>
 #include <openssl/sha.h>
 
 #include "base/logging.h"
+#include "base/stl_util.h"
 #include "content/child/webcrypto/algorithm_implementation.h"
 #include "content/child/webcrypto/crypto_data.h"
 #include "content/child/webcrypto/openssl/util_openssl.h"
 #include "content/child/webcrypto/status.h"
 #include "content/child/webcrypto/webcrypto_util.h"
 #include "crypto/openssl_util.h"
 #include "crypto/scoped_openssl_types.h"
 
 namespace content {
 
@@ skipping 33 matching lines @@
     Status error = FinishInternal(result_, &result_data_size);
     if (!error.IsSuccess())
       return false;
     result_data = result_;
     return true;
   }
 
   Status FinishWithVectorAndStatus(std::vector<uint8_t>* result) {
     const int hash_expected_size = EVP_MD_CTX_size(digest_context_.get());
     result->resize(hash_expected_size);
-    unsigned char* const hash_buffer = Uint8VectorStart(result);
+    unsigned char* const hash_buffer = vector_as_array(result);
     unsigned int hash_buffer_size;  // ignored
     return FinishInternal(hash_buffer, &hash_buffer_size);
   }
 
  private:
   Status Init() {
     if (initialized_)
       return Status::Success();
 
     const EVP_MD* digest_algorithm = GetDigest(algorithm_id_);
@@ skipping 56 matching lines @@
 }
 
 scoped_ptr<blink::WebCryptoDigestor> CreatePlatformDigestor(
     blink::WebCryptoAlgorithmId algorithm) {
   return scoped_ptr<blink::WebCryptoDigestor>(new DigestorOpenSsl(algorithm));
 }
 
 }  // namespace webcrypto
 
 }  // namespace content