Switch Safe Browsing's metadata from string to struct.

chrome/browser/safe_browsing/local_database_manager.h

 // Copyright (c) 2012 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.
 //
 // Safe Browsing Database Manager implementation that manages a local
 // database.  This is used by Desktop Chromium.
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_LOCAL_DATABASE_MANAGER_H_
 #define CHROME_BROWSER_SAFE_BROWSING_LOCAL_DATABASE_MANAGER_H_
 
@@ skipping 54 matching lines @@
     ~SafeBrowsingCheck();
 
     // Either |urls| or |full_hashes| is used to lookup database. |*_results|
     // are parallel vectors containing the results. They are initialized to
     // contain SB_THREAT_TYPE_SAFE.
     // |url_hit_hash| and |url_metadata| are parallel vectors containing full
     // hash and metadata of a database record provided the result. They are
     // initialized to be empty strings.
     std::vector<GURL> urls;
     std::vector<SBThreatType> url_results;
-    std::vector<std::string> url_metadata;
+    std::vector<ThreatMetadata> url_metadata;
     std::vector<std::string> url_hit_hash;
     std::vector<SBFullHash> full_hashes;
     std::vector<SBThreatType> full_hash_results;
 
     SafeBrowsingDatabaseManager::Client* client;
     bool is_extended_reporting;
     bool need_get_hash;
     base::TimeTicks start;  // When check was sent to SB service.
     ListType check_type;  // See comment in constructor.
     std::vector<SBThreatType> expected_threats;
@@ skipping 291 matching lines @@
 
   // Timeout to use for safe browsing checks.
   base::TimeDelta check_timeout_;
 
   DISALLOW_COPY_AND_ASSIGN(LocalSafeBrowsingDatabaseManager);
 };  // class LocalSafeBrowsingDatabaseManager
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_LOCAL_DATABASE_MANAGER_H_