Handle online and offline redirects via interceptor and offline scheme

chrome/browser/android/offline_pages/offline_page_protocol_handler.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_PROTOCOL_HANDLER_H_
+#define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_PROTOCOL_HANDLER_H_
+
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "net/url_request/url_request_job_factory.h"
+
+namespace offline_pages {
+
+// Implements a ProtocolHandler for offline scheme jobs.
+class OfflinePageProtocolHandler
+    : public net::URLRequestJobFactory::ProtocolHandler {
+ public:
+  explicit OfflinePageProtocolHandler(void* profile_id);
+  ~OfflinePageProtocolHandler() override;
+
+  // Creates URLRequestJobs for offline:// URLs.
+  net::URLRequestJob* MaybeCreateJob(
+      net::URLRequest* request,
+      net::NetworkDelegate* network_delegate) const override;
+
+ private:
+  void* profile_id_;
+  base::WeakPtrFactory<OfflinePageProtocolHandler> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(OfflinePageProtocolHandler);
+};
+
+}  // namespace offline_pages
+
+#endif // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_PROTOCOL_HANDLER_H_