PVer4: Test checksum on startup outside the hotpath of DB load

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 116 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(V4LocalDatabaseManagerTest,
                            TestGetSeverestThreatTypeAndMetadata);
 
   // The set of clients awaiting a full hash response. It is used for tracking
   // which clients have cancelled their outstanding request.
   typedef std::unordered_set<Client*> PendingClients;
 
   ~V4LocalDatabaseManager() override;
 
   // Called when all the stores managed by the database have been read from
-  // disk after startup and the database is ready for use.
-  void DatabaseReady(std::unique_ptr<V4Database> v4_database);
+  // disk after startup and the database is ready for checking resource
+  // reputation.
+  void DatabaseReadyForChecks(std::unique_ptr<V4Database> v4_database);
+
+  // Called when all the stores managed by the database have been verified for
+  // checksum correctness after startup and the database is ready for applying
+  // updates.
+  void DatabaseReadyForUpdates(
+      const std::vector<ListIdentifier>& stores_to_reset);
 
   // Called when the database has been updated and schedules the next update.
   void DatabaseUpdated();
 
   // Return the prefixes and the store they matched in, for a given URL. Returns
   // true if a hash prefix match is found; false otherwise.
   bool GetPrefixMatches(
       const std::unique_ptr<PendingCheck>& check,
       FullHashToStoreAndHashPrefixesMap* full_hash_to_store_and_hash_prefixes);
 
@@ skipping 78 matching lines @@
   // The protocol manager that downloads the hash prefix updates.
   std::unique_ptr<V4UpdateProtocolManager> v4_update_protocol_manager_;
 
   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_