Shift "commit point" for when a download will no longer accept cancels.

content/browser/download/download_file_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_FILE_IMPL_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_IMPL_H_
 
 #include "content/browser/download/download_file.h"
 
 #include "base/memory/ref_counted.h"
@@ skipping 25 matching lines @@
                    bool calculate_hash,
                    scoped_ptr<content::PowerSaveBlocker> power_save_blocker,
                    const net::BoundNetLog& bound_net_log);
   virtual ~DownloadFileImpl();
 
   // DownloadFile functions.
   virtual content::DownloadInterruptReason Initialize() OVERRIDE;
   virtual void Rename(const FilePath& full_path,
                       bool overwrite_existing_file,
                       const RenameCompletionCallback& callback) OVERRIDE;
-  virtual void Detach() OVERRIDE;
+  virtual void Detach(base::Closure callback) OVERRIDE;
   virtual void Cancel() OVERRIDE;
   virtual void AnnotateWithSourceInformation() OVERRIDE;
   virtual FilePath FullPath() const OVERRIDE;
   virtual bool InProgress() const OVERRIDE;
   virtual int64 BytesSoFar() const OVERRIDE;
   virtual int64 CurrentSpeed() const OVERRIDE;
   virtual bool GetHash(std::string* hash) OVERRIDE;
   virtual std::string GetHashState() OVERRIDE;
   virtual void CancelDownloadRequest() OVERRIDE;
   virtual int Id() const OVERRIDE;
@@ skipping 49 matching lines @@
 
   base::WeakPtrFactory<DownloadFileImpl> weak_factory_;
 
   // RAII handle to keep the system from sleeping while we're downloading.
   scoped_ptr<content::PowerSaveBlocker> power_save_blocker_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadFileImpl);
 };
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_IMPL_H_