Showing previews UI for Offline Previews

components/offline_pages/request_header/offline_page_header.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_OFFLINE_PAGES_REQUEST_HEADER_OFFLINE_PAGE_HEADER_H_
 #define COMPONENTS_OFFLINE_PAGES_REQUEST_HEADER_OFFLINE_PAGE_HEADER_H_
 
 #include <string>
 
 namespace offline_pages {
@@ skipping 36 matching lines @@
     DOWNLOAD,
     RELOAD
   };
 
   OfflinePageHeader();
 
   // Constructed from a request header value string.
   // The struct members will be cleared if the parsing failed.
   explicit OfflinePageHeader(const std::string& header_value);
 
+  // Creates a copy of |other|.
+  OfflinePageHeader(const OfflinePageHeader& other);
+
   ~OfflinePageHeader();
 
   // Returns the full header string, including both key and value, that could be
   // passed to set extra request header.
   std::string GetCompleteHeaderString() const;
 
   void Clear();
 
   // Set if failed to parse a request header value string. For testing only.
   bool did_fail_parsing_for_test;
 
   // Flag to indicate if the header should be persisted across session restore.
   bool need_to_persist;
 
   // Describes the reason to load offline page.
   Reason reason;
 
   // The offline ID of the page to load.
   std::string id;
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_REQUEST_HEADER_OFFLINE_PAGE_HEADER_H_