Handle the case where IAttachmentExecute::Save() deletes a downloaded file.

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 37 matching lines @@
     scoped_ptr<content::PowerSaveBlocker> power_save_blocker,
     base::WeakPtr<content::DownloadDestinationObserver> observer);
 
   virtual ~DownloadFileImpl();
 
   // DownloadFile functions.
   virtual void Initialize(const InitializeCallback& callback) OVERRIDE;
   virtual void Rename(const FilePath& full_path,
                       bool overwrite_existing_file,
                       const RenameCompletionCallback& callback) OVERRIDE;
-  virtual void Detach(base::Closure callback) OVERRIDE;
+  virtual void Detach(const DetachCompletionCallback& 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;
 
  protected:
   // For test class overrides.
   virtual content::DownloadInterruptReason AppendDataToFile(
@@ skipping 33 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_