Load live version when reloading an offline page on connected network

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"
 #include "net/url_request/url_request_file_job.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace offline_pages {
 
-// Header that indicates that the offline page should be loaded if it exists
-// regardless current network conditions. Its value is a comma/space separated
-// name-value pair that may provide reason or define custom behavior.
-extern const char kOfflinePageHeader[];
-// The name used in name-value pair of kOfflinePageHeader to tell if the offline
-// info in this header should be persisted across session restore.
-extern const char kOfflinePageHeaderPersistKey[];
-// The name used in name-value pair of kOfflinePageHeader to denote the reason
-// for loading offline page.
-extern const char kOfflinePageHeaderReasonKey[];
-// Possible values in name-value pair that denote the reason for loading offline
-// page.
-extern const char kOfflinePageHeaderReasonValueDueToNetError[];
-extern const char kOfflinePageHeaderReasonValueFromDownload[];
-// The name used in name-value pair of kOfflinePageHeader to denote the offline
-// ID of the offline page to load.
-extern const char kOfflinePageHeaderIDKey[];
-
 // A request job that serves content from offline file.
 class OfflinePageRequestJob : public net::URLRequestFileJob {
  public:
   // This enum is used for UMA reporting. It contains all possible outcomes of
   // handling requests that might service offline page in different network
   // conditions. Generally one of these outcomes will happen.
   // The fringe errors (like no OfflinePageModel, etc.) are not reported due
   // to their low probability.
   // NOTE: because this is used for UMA reporting, these values should not be
   // changed or reused; new values should be ended immediately before the MAX
@@ skipping 60 matching lines @@
   std::unique_ptr<Delegate> delegate_;
 
   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_