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

components/history/core/browser/history_backend.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 COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_BACKEND_H_
 #define COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_BACKEND_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 319 matching lines @@
 
   void SetFaviconsOutOfDateForPage(const GURL& page_url);
 
   void SetImportedFavicons(
       const favicon_base::FaviconUsageDataList& favicon_usage);
 
   // Downloads -----------------------------------------------------------------
 
   uint32_t GetNextDownloadId();
   void QueryDownloads(std::vector<DownloadRow>* rows);
-  void UpdateDownload(const DownloadRow& data);
+  void UpdateDownload(const DownloadRow& data, bool should_commit_immediately);
   bool CreateDownload(const DownloadRow& history_info);
   void RemoveDownloads(const std::set<uint32_t>& ids);
 
   // Keyword search terms ------------------------------------------------------
 
   void SetKeywordSearchTermsForURL(const GURL& url,
                                    KeywordID keyword_id,
                                    const base::string16& term);
 
   void DeleteAllSearchTermsForKeyword(KeywordID keyword_id);
@@ skipping 541 matching lines @@
 
   // List of observers
   base::ObserverList<HistoryBackendObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryBackend);
 };
 
 }  // namespace history
 
 #endif  // COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_BACKEND_H_