Merge M54: Support serving offline page by offline ID

chrome/browser/android/offline_pages/offline_page_tab_helper.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 "chrome/browser/android/offline_pages/offline_page_tab_helper.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/android/offline_pages/offline_page_request_job.h"
@@ skipping 95 matching lines @@
         OfflinePageRequestJob::AggregatedRequestResult::
             PAGE_NOT_FOUND_ON_FLAKY_NETWORK);
     return;
   }
 
   reloading_url_on_net_error_ = true;
 
   // Reloads the page with extra header set to force loading the offline page.
   content::NavigationController::LoadURLParams load_params(offline_page->url);
   load_params.transition_type = ui::PAGE_TRANSITION_RELOAD;
-  load_params.extra_headers = kLoadingOfflinePageHeader;
+  load_params.extra_headers = kOfflinePageHeader;
   load_params.extra_headers += ":";
-  load_params.extra_headers += kLoadingOfflinePageReason;
-  load_params.extra_headers += kLoadingOfflinePageDueToNetError;
+  load_params.extra_headers += kOfflinePageHeaderReasonKey;
+  load_params.extra_headers += "=";
+  load_params.extra_headers += kOfflinePageHeaderReasonValueDueToNetError;
   web_contents()->GetController().LoadURLWithParams(load_params);
 }
 
 void OfflinePageTabHelper::SetOfflinePage(const OfflinePageItem& offline_page,
                                           bool is_offline_preview) {
   offline_page_ = base::MakeUnique<OfflinePageItem>(offline_page);
   is_offline_preview_ = is_offline_preview;
 }
 
 }  // namespace offline_pages