Support getting offline pages also by original URL

chrome/browser/android/offline_pages/offline_page_request_job.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 CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_REQUEST_JOB_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_REQUEST_JOB_H_
 
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/resource_request_info.h"
 #include "content/public/common/resource_type.h"
@@ skipping 63 matching lines @@
       net::NetworkDelegate* network_delegate,
       previews::PreviewsDecider* previews_decider);
 
   ~OfflinePageRequestJob() override;
 
   // net::URLRequestJob overrides:
   void Start() override;
   void Kill() override;
 
   void OnOfflineFilePathAvailable(const base::FilePath& offline_file_path);
+  void OnOfflineRedirectAvailabe(const GURL& redirected_url);
 
   void SetDelegateForTesting(std::unique_ptr<Delegate> delegate);
 
  private:
   OfflinePageRequestJob(net::URLRequest* request,
                         net::NetworkDelegate* network_delegate,
                         previews::PreviewsDecider* previews_decider);
 
   void StartAsync();
 
   // Restarts the request job in order to fall back to the default handling.
   void FallbackToDefault();
 
   std::unique_ptr<Delegate> delegate_;
 
   // Used to determine if an URLRequest is eligible for offline previews.
   previews::PreviewsDecider* previews_decider_;
 
   base::WeakPtrFactory<OfflinePageRequestJob> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageRequestJob);
 };
 
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_REQUEST_JOB_H_