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

chrome/common/instant_types.h

 // Copyright 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.
 
 #ifndef CHROME_COMMON_INSTANT_TYPES_H_
 #define CHROME_COMMON_INSTANT_TYPES_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 107 matching lines @@
   // True if theme has attribution logo.
   // Value is only valid if |theme_id| is valid.
   bool has_attribution;
 
   // True if theme has an alternate logo.
   bool logo_alternate;
 };
 
 struct InstantMostVisitedItem {
   InstantMostVisitedItem();
+  InstantMostVisitedItem(const InstantMostVisitedItem& other);
   ~InstantMostVisitedItem();
 
   // The URL of the Most Visited item.
   GURL url;
 
   // The title of the Most Visited page.  May be empty, in which case the |url|
   // is used as the title.
   base::string16 title;
 
   // The external URL of the thumbnail associated with this page.
@@ skipping 45 matching lines @@
 
   // The optional assisted query stats, aka AQS, used for logging purposes.
   // This string contains impressions of all autocomplete matches shown
   // at the query submission time.  For privacy reasons, we require the
   // search provider to support HTTPS protocol in order to receive the AQS
   // param.
   // For more details, see http://goto.google.com/binary-clients-logging.
   base::string16 assisted_query_stats;
 };
 #endif  // CHROME_COMMON_INSTANT_TYPES_H_