Read and restore persisted slice info

content/browser/download/download_item_impl.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 CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 33 matching lines @@
 
   // The maximum number of attempts we will make to resume automatically.
   static const int kMaxAutoResumeAttempts;
 
   // Note that it is the responsibility of the caller to ensure that a
   // DownloadItemImplDelegate passed to a DownloadItemImpl constructor
   // outlives the DownloadItemImpl.
 
   // Constructing from persistent store:
   // |net_log| is constructed externally for our use.
-  DownloadItemImpl(DownloadItemImplDelegate* delegate,
-                   const std::string& guid,
-                   uint32_t id,
-                   const base::FilePath& current_path,
-                   const base::FilePath& target_path,
-                   const std::vector<GURL>& url_chain,
-                   const GURL& referrer_url,
-                   const GURL& site_url,
-                   const GURL& tab_url,
-                   const GURL& tab_referrer_url,
-                   const std::string& mime_type,
-                   const std::string& original_mime_type,
-                   const base::Time& start_time,
-                   const base::Time& end_time,
-                   const std::string& etag,
-                   const std::string& last_modified,
-                   int64_t received_bytes,
-                   int64_t total_bytes,
-                   const std::string& hash,
-                   DownloadItem::DownloadState state,
-                   DownloadDangerType danger_type,
-                   DownloadInterruptReason interrupt_reason,
-                   bool opened,
-                   const net::NetLogWithSource& net_log);
+  DownloadItemImpl(
+      DownloadItemImplDelegate* delegate,
+      const std::string& guid,
+      uint32_t id,
+      const base::FilePath& current_path,
+      const base::FilePath& target_path,
+      const std::vector<GURL>& url_chain,
+      const GURL& referrer_url,
+      const GURL& site_url,
+      const GURL& tab_url,
+      const GURL& tab_referrer_url,
+      const std::string& mime_type,
+      const std::string& original_mime_type,
+      const base::Time& start_time,
+      const base::Time& end_time,
+      const std::string& etag,
+      const std::string& last_modified,
+      int64_t received_bytes,
+      int64_t total_bytes,
+      const std::string& hash,
+      DownloadItem::DownloadState state,
+      DownloadDangerType danger_type,
+      DownloadInterruptReason interrupt_reason,
+      bool opened,
+      const std::vector<DownloadItem::ReceivedSlice>& received_slices,
+      const net::NetLogWithSource& net_log);
 
   // Constructing for a regular download.
   // |net_log| is constructed externally for our use.
   DownloadItemImpl(DownloadItemImplDelegate* delegate,
                    uint32_t id,
                    const DownloadCreateInfo& info,
                    const net::NetLogWithSource& net_log);
 
   // Constructing for the "Save Page As..." feature:
   // |net_log| is constructed externally for our use.
@@ skipping 55 matching lines @@
   bool GetFileExternallyRemoved() const override;
   void DeleteFile(const base::Callback<void(bool)>& callback) override;
   bool IsDangerous() const override;
   DownloadDangerType GetDangerType() const override;
   bool TimeRemaining(base::TimeDelta* remaining) const override;
   int64_t CurrentSpeed() const override;
   int PercentComplete() const override;
   bool AllDataSaved() const override;
   int64_t GetTotalBytes() const override;
   int64_t GetReceivedBytes() const override;
+  const std::vector<DownloadItem::ReceivedSlice>& GetReceivedSlices()
+      const override;
   base::Time GetStartTime() const override;
   base::Time GetEndTime() const override;
   bool CanShowInFolder() override;
   bool CanOpenDownload() override;
   bool ShouldOpenFileBasedOnExtension() override;
   bool GetOpenWhenComplete() const override;
   bool GetAutoOpened() override;
   bool GetOpened() const override;
   BrowserContext* GetBrowserContext() const override;
   WebContents* GetWebContents() const override;
@@ skipping 504 matching lines @@
   // exposes the partial hash state. This state can be held by the download item
   // in case it's needed for resumption.
   std::unique_ptr<crypto::SecureHash> hash_state_;
 
   // Contents of the Last-Modified header for the most recent server response.
   std::string last_modified_time_;
 
   // Server's ETAG for the file.
   std::string etag_;
 
+  // The data slices that have been received so far.
+  std::vector<DownloadItem::ReceivedSlice> received_slices_;
+
   // Net log to use for this download.
   const net::NetLogWithSource net_log_;
 
   base::WeakPtrFactory<DownloadItemImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadItemImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_IMPL_H_