Each DatabaseManager gets to decide which stores to track

components/safe_browsing_db/v4_local_database_manager.h

 // 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.
 
 #ifndef COMPONENTS_SAFE_BROWSING_DB_V4_LOCAL_DATABASE_MANAGER_H_
 #define COMPONENTS_SAFE_BROWSING_DB_V4_LOCAL_DATABASE_MANAGER_H_
 
 // A class that provides the interface between the SafeBrowsing protocol manager
 // and database that holds the downloaded updates.
 
@@ skipping 40 matching lines @@
                          Client* client) override;
   bool MatchCsdWhitelistUrl(const GURL& url) override;
   bool MatchMalwareIP(const std::string& ip_address) override;
   bool MatchDownloadWhitelistUrl(const GURL& url) override;
   bool MatchDownloadWhitelistString(const std::string& str) override;
   bool MatchModuleWhitelistString(const std::string& str) override;
   bool CheckResourceUrl(const GURL& url, Client* client) override;
   bool IsMalwareKillSwitchOn() override;
   bool IsCsdWhitelistKillSwitchOn() override;
 
+ protected:
+  std::unordered_set<UpdateListIdentifier> GetStoresForFullHashRequests()
+      override;
+
  private:
   friend class V4LocalDatabaseManagerTest;
   void SetTaskRunnerForTest(
       const scoped_refptr<base::SequencedTaskRunner>& task_runner) {
     task_runner_ = task_runner;
   }
 
   ~V4LocalDatabaseManager() override;
 
   // The callback called each time the protocol manager downloads updates
@@ skipping 19 matching lines @@
 
   // Whether the service is running.
   bool enabled_;
 
   // Stores the current status of the lists to download from the SafeBrowsing
   // servers.
   // TODO(vakh): current_list_states_ doesn't really belong here.
   // It should come through the database, from the various V4Stores.
   base::hash_map<UpdateListIdentifier, std::string> current_list_states_;
 
+  // The list of stores to manage (for hash prefixes and full hashes), along
+  // with the corresponding filename on disk for each of them.
+  StoreIdAndFileNames store_id_file_names_;
+
   // The protocol manager that downloads the hash prefix updates.
   std::unique_ptr<V4UpdateProtocolManager> v4_update_protocol_manager_;
 
   // The database that manages the stores containing the hash prefix updates.
   // All writes to this variable must happen on the IO thread only.
   std::unique_ptr<V4Database> v4_database_;
 
   // Called when the V4Database has finished applying the latest update and is
   // ready to process next update.
   DatabaseUpdatedCallback db_updated_callback_;
 
   // The sequenced task runner for running safe browsing database operations.
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
 
   friend class base::RefCountedThreadSafe<V4LocalDatabaseManager>;
   DISALLOW_COPY_AND_ASSIGN(V4LocalDatabaseManager);
 };  // class V4LocalDatabaseManager
 
 }  // namespace safe_browsing
 
 #endif  // COMPONENTS_SAFE_BROWSING_DB_V4_LOCAL_DATABASE_MANAGER_H_