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

components/error_page/renderer/net_error_helper_core.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 COMPONENTS_ERROR_PAGE_RENDERER_NET_ERROR_HELPER_CORE_H_
 #define COMPONENTS_ERROR_PAGE_RENDERER_NET_ERROR_HELPER_CORE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 112 matching lines @@
     // Note that this is different from the saved copy in the cache as in
     // LoadPageFromCache.
     virtual void LoadOfflineCopy(const GURL& page_url) = 0;
 
    protected:
     virtual ~Delegate() {}
   };
 
   struct NavigationCorrectionParams {
     NavigationCorrectionParams();
+    NavigationCorrectionParams(const NavigationCorrectionParams& other);
     ~NavigationCorrectionParams();
 
     // URL used both for getting the suggestions and tracking clicks.
     GURL url;
 
     std::string language;
     std::string country_code;
     std::string api_key;
     GURL search_url;
   };
@@ skipping 164 matching lines @@
 
   // This value is set only when a navigation has been initiated from
   // the error page.  It is used to detect when such navigations result
   // in errors.
   Button navigation_from_button_;
 };
 
 }  // namespace error_page
 
 #endif  // COMPONENTS_ERROR_PAGE_RENDERER_NET_ERROR_HELPER_CORE_H_