Remove Old ChromeOS Offline Error Page

chrome/browser/renderer_host/offline_resource_throttle.h

-// Copyright (c) 2012 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_RENDERER_HOST_OFFLINE_RESOURCE_THROTTLE_H_
-#define CHROME_BROWSER_RENDERER_HOST_OFFLINE_RESOURCE_THROTTLE_H_
-
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "chrome/browser/chromeos/offline/offline_load_page.h"
-#include "content/public/browser/resource_throttle.h"
-#include "net/base/completion_callback.h"
-
-namespace content {
-class AppCacheService;
-}
-
-namespace net {
-class URLRequest;
-}
-// Used to show an offline interstitial page when the network is not available.
-class OfflineResourceThrottle
-    : public content::ResourceThrottle,
-      public base::SupportsWeakPtr<OfflineResourceThrottle> {
- public:
-  OfflineResourceThrottle(net::URLRequest* request,
-                          content::AppCacheService* appcache_service);
-  ~OfflineResourceThrottle() override;
-
-  // content::ResourceThrottle implementation:
-  void WillStartRequest(bool* defer) override;
-  const char* GetNameForLogging() const override;
-
- private:
-  void OnBlockingPageComplete(bool proceed);
-  void ClearRequestInfo();
-  bool IsRemote(const GURL& url) const;
-  bool ShouldShowOfflinePage(const GURL& url) const;
-  void OnCanHandleOfflineComplete(int rv);
-
-  net::URLRequest* request_;
-  // Safe to keep a pointer around since AppCacheService outlives all requests.
-  content::AppCacheService* appcache_service_;
-  net::CancelableCompletionCallback completion_callback_;
-  int pending_callbacks_;
-
-  DISALLOW_COPY_AND_ASSIGN(OfflineResourceThrottle);
-};
-
-#endif  // CHROME_BROWSER_RENDERER_HOST_OFFLINE_RESOURCE_THROTTLE_H_