Showing previews UI for Offline Previews

chrome/browser/android/offline_pages/offline_page_request_job.h

Index: chrome/browser/android/offline_pages/offline_page_request_job.h
diff --git a/chrome/browser/android/offline_pages/offline_page_request_job.h b/chrome/browser/android/offline_pages/offline_page_request_job.h
index c02d5a608663348fa5cbb59efc0259ffb5656eae..2b5d1e8f8ab74cdfc3b0b9d41db7264e8adb492f 100644
--- a/chrome/browser/android/offline_pages/offline_page_request_job.h
+++ b/chrome/browser/android/offline_pages/offline_page_request_job.h
@@ -1,31 +1,35 @@
 // 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 <memory>
+
 #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 previews {
 class PreviewsDecider;
 }
 
 namespace offline_pages {
+struct OfflinePageHeader;
+struct OfflinePageItem;
 
 // 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
@@ -73,37 +77,43 @@ class OfflinePageRequestJob : public net::URLRequestFileJob {
       net::URLRequest* request,
       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 OnOfflineFilePathAvailable(
+      const base::FilePath& offline_file_path,
+      std::unique_ptr<OfflinePageHeader> offline_header,
+      std::unique_ptr<OfflinePageItem> offline_page);
 
   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_;
 
+  // Was this job started as an offline preview.
+  bool was_started_as_preview_;
+
   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_