Fix an issue that temp files are left permanently on storage after chrome crash

chrome/browser/download/download_history.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 CHROME_BROWSER_DOWNLOAD_DOWNLOAD_HISTORY_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_HISTORY_H_
 
 #include <stdint.h>
 
 #include <set>
@@ skipping 24 matching lines @@
     explicit HistoryAdapter(history::HistoryService* history);
     virtual ~HistoryAdapter();
 
     virtual void QueryDownloads(
         const history::HistoryService::DownloadQueryCallback& callback);
 
     virtual void CreateDownload(
         const history::DownloadRow& info,
         const history::HistoryService::DownloadCreateCallback& callback);
 
-    virtual void UpdateDownload(const history::DownloadRow& data);
+    virtual void UpdateDownload(const history::DownloadRow& data,
+                                bool should_commit_immediately);
 
     virtual void RemoveDownloads(const std::set<uint32_t>& ids);
 
    private:
     history::HistoryService* history_;
     DISALLOW_COPY_AND_ASSIGN(HistoryAdapter);
   };
 
   class Observer {
    public:
@@ skipping 101 matching lines @@
   bool initial_history_query_complete_;
 
   base::ObserverList<Observer> observers_;
 
   base::WeakPtrFactory<DownloadHistory> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadHistory);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_HISTORY_H_