Each DatabaseManager gets to decide which stores to track

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/metrics/sparse_histogram.h"
 #include "base/rand_util.h"
 #include "base/strings/string_util.h"
@@ skipping 219 matching lines @@
 void V4ProtocolManagerUtil::UpdateHeaders(net::HttpRequestHeaders* headers) {
   // NOTE(vakh): The following header informs the envelope server (which sits in
   // front of Google's stubby server) that the received GET request should be
   // interpreted as a POST.
   headers->SetHeaderIfMissing("X-HTTP-Method-Override", "POST");
 }
 
 // static
 void V4ProtocolManagerUtil::UrlToFullHashes(
     const GURL& url,
-    base::hash_set<FullHash>* full_hashes) {
+    std::unordered_set<FullHash>* full_hashes) {
   std::string canon_host, canon_path, canon_query;
   CanonicalizeUrl(url, &canon_host, &canon_path, &canon_query);
 
   std::vector<std::string> hosts;
   if (url.HostIsIPAddress()) {
     hosts.push_back(url.host());
   } else {
     GenerateHostVariantsToCheck(canon_host, &hosts);
   }
 
@@ skipping 239 matching lines @@
   }
 
   if (!paths->empty() && paths->back() != path)
     paths->push_back(path);
 
   if (!query.empty())
     paths->push_back(path + "?" + query);
 }
 
 }  // namespace safe_browsing