[Downloads] Allow acquiring dangerous download file.

content/browser/download/download_manager_impl.cc

 // 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.
 
 #include "content/browser/download/download_manager_impl.h"
 
 #include <iterator>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 335 matching lines @@
 
     if (download->IsDangerous() && download->IsPartialDownload()) {
       // The user hasn't accepted it, so we need to remove it
       // from the disk.  This may or may not result in it being
       // removed from the DownloadManager queues and deleted
       // (specifically, DownloadManager::DownloadRemoved only
       // removes and deletes it if it's known to the history service)
       // so the only thing we know after calling this function is that
       // the download was deleted if-and-only-if it was removed
       // from all queues.
-      download->Delete(DownloadItem::DELETE_DUE_TO_BROWSER_SHUTDOWN);
+      download->DiscardDangerousDownload(
+          DownloadItem::DELETE_DUE_TO_BROWSER_SHUTDOWN,
+          DownloadItem::AcquireFileCallback());
     } else if (download->IsPartialDownload()) {
       download->Cancel(false);
     }
   }
 
   // At this point, all dangerous downloads have had their files removed
   // and all in progress downloads have been cancelled.  We can now delete
   // anything left.
 
   STLDeleteValues(&downloads_);
@@ skipping 296 matching lines @@
   if (delegate_)
     delegate_->OpenDownload(download);
 }
 
 void DownloadManagerImpl::ShowDownloadInShell(DownloadItemImpl* download) {
   if (delegate_)
     delegate_->ShowDownloadInShell(download);
 }
 
 }  // namespace content