Add more out of line copy ctors for complex classes.

components/safe_browsing_db/util.h

 // Copyright (c) 2015 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.
 //
 // Utilities for the SafeBrowsing DB code.
 
 #ifndef COMPONENTS_SAFE_BROWSING_DB_UTIL_H_
 #define COMPONENTS_SAFE_BROWSING_DB_UTIL_H_
 
 #include <stdint.h>
@@ skipping 47 matching lines @@
   NONE,          // Pattern type didn't appear in the metadata
   LANDING,       // The match is a landing page
   DISTRIBUTION,  // The match is a distribution page
 };
 
 // Metadata that was returned by a GetFullHash call. This is the parsed version
 // of the PB (from Pver3, or Pver4 local) or JSON (from Pver4 via GMSCore).
 // Some fields are only applicable to certain lists.
 struct ThreatMetadata {
   ThreatMetadata();
+  ThreatMetadata(const ThreatMetadata& other);
   ~ThreatMetadata();
 
   // Type of blacklisted page. Used on malware and UwS lists.
   // This will be NONE if it wasn't present in the reponse.
   ThreatPatternType threat_pattern_type;
 
   // List of permissions blocked. Used with threat_type API_ABUSE.
   // This will be empty if it wasn't present in the response.
   std::vector<std::string> api_permissions;
 
@@ skipping 127 matching lines @@
 
 // Given a URL, returns all the paths we need to check.
 void GeneratePathsToCheck(const GURL& url, std::vector<std::string>* paths);
 
 // Given a URL, returns all the patterns we need to check.
 void GeneratePatternsToCheck(const GURL& url, std::vector<std::string>* urls);
 
 }  // namespace safe_browsing
 
 #endif  // COMPONENTS_SAFE_BROWSING_DB_UTIL_H_