components: Add out-of-line copy ctors for complex classes.

components/safe_browsing_db/v4_protocol_manager_util.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_PROTOCOL_MANAGER_UTIL_H_
 #define COMPONENTS_SAFE_BROWSING_DB_V4_PROTOCOL_MANAGER_UTIL_H_
 
 // A class that implements the stateless methods used by the GetHashUpdate and
 // GetFullHash stubby calls made by Chrome using the SafeBrowsing V4 protocol.
 
@@ skipping 14 matching lines @@
   // Current product version sent in each request.
   std::string version;
 
   // The Google API key.
   std::string key_param;
 
   // Disable auto-updates using a command line switch?
   bool disable_auto_update;
 
   V4ProtocolConfig();
+  V4ProtocolConfig(const V4ProtocolConfig& other);
   ~V4ProtocolConfig();
 };
 
 // The information required to uniquely identify each list the client is
 // interested in maintaining and downloading from the SafeBrowsing servers.
 // For example, for digests of Malware binaries on Windows:
 // platform_type = WINDOWS,
 // threat_entry_type = BINARY_DIGEST,
 // threat_type = MALWARE
 struct UpdateListIdentifier {
@@ skipping 87 matching lines @@
 namespace std {
 template <>
 struct hash<safe_browsing::UpdateListIdentifier> {
   std::size_t operator()(const safe_browsing::UpdateListIdentifier& s) const {
     return s.hash();
   }
 };
 }
 
 #endif  // COMPONENTS_SAFE_BROWSING_DB_V4_PROTOCOL_MANAGER_UTIL_H_