Make cancel remove cancelled download from active queues at time of cancel.

chrome/browser/download/chrome_download_manager_delegate.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.
 
 #ifndef CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_
 #define CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "base/hash_tables.h"
@@ skipping 50 matching lines @@
   virtual bool ShouldOpenDownload(DownloadItem* item) OVERRIDE;
   virtual bool ShouldCompleteDownload(DownloadItem* item) OVERRIDE;
   virtual bool GenerateFileHash() OVERRIDE;
   virtual void OnResponseCompleted(DownloadItem* item,
                                    const std::string& hash) OVERRIDE;
   virtual void AddItemToPersistentStore(DownloadItem* item) OVERRIDE;
   virtual void UpdateItemInPersistentStore(DownloadItem* item) OVERRIDE;
   virtual void UpdatePathForItemInPersistentStore(
       DownloadItem* item,
       const FilePath& new_path) OVERRIDE;
-  virtual void RemoveItemFromPersistentStore(DownloadItem* item) OVERRIDE;
+  virtual void RemoveItemFromPersistentStore(int64 db_handle) OVERRIDE;
   virtual void RemoveItemsFromPersistentStoreBetween(
       const base::Time remove_begin,
       const base::Time remove_end) OVERRIDE;
   virtual void GetSaveDir(TabContents* tab_contents,
                           FilePath* website_save_dir,
                           FilePath* download_save_dir) OVERRIDE;
   virtual void ChooseSavePath(const base::WeakPtr<SavePackage>& save_package,
                               const FilePath& suggested_path,
                               bool can_save_as_complete) OVERRIDE;
   virtual void DownloadProgressUpdated() OVERRIDE;
@@ skipping 59 matching lines @@
   // Maps from pending extension installations to DownloadItem IDs.
   typedef base::hash_map<CrxInstaller*, int> CrxInstallerMap;
   CrxInstallerMap crx_installers_;
 
   NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeDownloadManagerDelegate);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_CHROME_DOWNLOAD_MANAGER_DELEGATE_H_