Showing previews UI for Offline Previews

components/offline_pages/request_header/offline_page_header.cc

 // 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.
 
 #include "components/offline_pages/request_header/offline_page_header.h"
 
 #include "base/strings/string_tokenizer.h"
 #include "base/strings/string_util.h"
 
 namespace offline_pages {
@@ skipping 67 matching lines @@
 }
 
 }  // namespace
 
 OfflinePageHeader::OfflinePageHeader()
     : did_fail_parsing_for_test(false),
       need_to_persist(false),
       reason(Reason::NONE) {
 }
 
+OfflinePageHeader::OfflinePageHeader(const OfflinePageHeader& other) = default;
+
 OfflinePageHeader::OfflinePageHeader(const std::string& header_value)
     : did_fail_parsing_for_test(false),
       need_to_persist(false),
       reason(Reason::NONE) {
   if (!ParseOfflineHeaderValue(header_value, &need_to_persist, &reason, &id)) {
     did_fail_parsing_for_test = true;
     Clear();
   }
 }
 
@@ skipping 25 matching lines @@
   return value;
 }
 
 void OfflinePageHeader::Clear() {
   reason = Reason::NONE;
   need_to_persist = false;
   id.clear();
 }
 
 }  // namespace offline_pages