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

chrome/browser/extensions/chrome_app_sorting.h

 // Copyright 2013 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_BROWSER_EXTENSIONS_CHROME_APP_SORTING_H_
 #define CHROME_BROWSER_EXTENSIONS_CHROME_APP_SORTING_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 67 matching lines @@
   friend class ChromeAppSortingPageOrdinalMapping;
   friend class ChromeAppSortingSetExtensionVisible;
 
   // An enum used by GetMinOrMaxAppLaunchOrdinalsOnPage to specify which
   // value should be returned.
   enum AppLaunchOrdinalReturn {MIN_ORDINAL, MAX_ORDINAL};
 
   // Maps an app id to its ordinals.
   struct AppOrdinals {
     AppOrdinals();
+    AppOrdinals(const AppOrdinals& other);
     ~AppOrdinals();
 
     syncer::StringOrdinal page_ordinal;
     syncer::StringOrdinal app_launch_ordinal;
   };
   typedef std::map<std::string, AppOrdinals> AppOrdinalsMap;
 
   // This function returns the lowest ordinal on |page_ordinal| if
   // |return_value| == AppLaunchOrdinalReturn::MIN_ORDINAL, otherwise it returns
   // the largest ordinal on |page_ordinal|. If there are no apps on the page
@@ skipping 74 matching lines @@
 
   // The set of extensions that don't appear in the new tab page.
   std::set<std::string> ntp_hidden_extensions_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeAppSorting);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_CHROME_APP_SORTING_H_