Replace uses of hash_map in //base

components/safe_browsing_db/v4_protocol_manager_util.cc

 // Copyright 2016 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 "components/safe_browsing_db/v4_protocol_manager_util.h"
 
 #include "base/base64.h"
+#include "base/hash.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/rand_util.h"
 #include "base/sha1.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "crypto/sha2.h"
 #include "net/base/escape.h"
 #include "net/base/ip_address.h"
 #include "net/http/http_request_headers.h"
 #include "url/url_util.h"
@@ skipping 554 matching lines @@
 
   const std::string hash = base::SHA1HashString(packed_ip);
   DCHECK_EQ(20u, hash.size());
   hashed_encoded_ip->resize(hash.size() + 1);
   hashed_encoded_ip->replace(0, hash.size(), hash);
   (*hashed_encoded_ip)[hash.size()] = static_cast<unsigned char>(128);
   return true;
 }
 
 }  // namespace safe_browsing