sql::MetaTable.next_download_id, DownloadManager::GetNextId()

content/browser/download/download_item.h

 // Copyright (c) 2011 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.
 //
 // Each download is represented by a DownloadItem, and all DownloadItems
 // are owned by the DownloadManager which maintains a global list of all
 // downloads. DownloadItems are created when a user initiates a download,
 // and exist for the duration of the browser life time.
 //
 // Download observers:
 //   DownloadItem::Observer:
 //     - allows observers to receive notifications about one download from start
 //       to completion
 // Use AddObserver() / RemoveObserver() on the appropriate download object to
 // receive state updates.
 
 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_H_
 #pragma once
 
 #include <string>
+#include <iostream>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/observer_list.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "content/browser/download/download_request_handle.h"
 #include "content/browser/download/download_state_info.h"
 #include "googleurl/src/gurl.h"
 
 class DownloadFileManager;
+class DownloadId;
 class DownloadManager;
 struct DownloadCreateInfo;
 struct DownloadPersistentStoreInfo;
 
 // One DownloadItem per download. This is the model class that stores all the
 // state for a download. Multiple views, such as a tab's download shelf and the
 // Destination tab's download view, may refer to a given DownloadItem.
 //
 // This is intended to be used only on the UI thread.
 class DownloadItem {
@@ skipping 72 matching lines @@
   // Constructing for a regular download:
   DownloadItem(DownloadManager* download_manager,
                const DownloadCreateInfo& info,
                bool is_otr);
 
   // Constructing for the "Save Page As..." feature:
   DownloadItem(DownloadManager* download_manager,
                const FilePath& path,
                const GURL& url,
                bool is_otr,
-               int download_id);
+               DownloadId download_id);
 
   virtual ~DownloadItem();
 
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   // Notifies our observers periodically.
   void UpdateObservers();
 
   // Returns true if it is OK to open a folder which this file is inside.
@@ skipping 130 matching lines @@
   std::string content_disposition() const { return content_disposition_; }
   std::string mime_type() const { return mime_type_; }
   std::string original_mime_type() const { return original_mime_type_; }
   std::string referrer_charset() const { return referrer_charset_; }
   int64 total_bytes() const { return total_bytes_; }
   void set_total_bytes(int64 total_bytes) {
     total_bytes_ = total_bytes;
   }
   int64 received_bytes() const { return received_bytes_; }
   int32 id() const { return download_id_; }
+  DownloadId global_id() const;
   base::Time start_time() const { return start_time_; }
   void set_db_handle(int64 handle) { db_handle_ = handle; }
   int64 db_handle() const { return db_handle_; }
   DownloadManager* download_manager() { return download_manager_; }
   bool is_paused() const { return is_paused_; }
   bool open_when_complete() const { return open_when_complete_; }
   void set_open_when_complete(bool open) { open_when_complete_ = open; }
   bool file_externally_removed() const { return file_externally_removed_; }
   SafetyState safety_state() const { return safety_state_; }
   // Why |safety_state_| is not SAFE.
@@ skipping 189 matching lines @@
   // only.
   bool open_enabled_;
 
   // Did the delegate delay calling Complete on this download?
   bool delegate_delayed_complete_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadItem);
 };
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_H_