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

chrome/browser/safe_browsing/safe_browsing_util.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.
 //
 // Utilities for the SafeBrowsing code.
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_UTIL_H_
 #define CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_UTIL_H_
 
 #include <stddef.h>
@@ skipping 59 matching lines @@
   explicit SBListChunkRanges(const std::string& n);
 
   std::string name;  // The list name.
   std::string adds;  // The ranges for add chunks.
   std::string subs;  // The ranges for sub chunks.
 };
 
 // Container for deleting chunks from the database.
 struct SBChunkDelete {
   SBChunkDelete();
+  SBChunkDelete(const SBChunkDelete& other);
   ~SBChunkDelete();
 
   std::string list_name;
   bool is_sub_del;
   std::vector<ChunkRange> chunk_del;
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_SAFE_BROWSING_UTIL_H_