Make DownloadHistory observe manager, items

chrome/browser/history/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_HISTORY_HISTORY_H_
 #define CHROME_BROWSER_HISTORY_HISTORY_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 461 matching lines @@
 
   // Begins a request to clean up entries that has been corrupted (because of
   // the crash, for example).
   void CleanUpInProgressEntries();
 
   // Called to update the history service about the current state of a download.
   // This is a 'fire and forget' query, so just pass the relevant state info to
   // the database with no need for a callback.
   void UpdateDownload(const content::DownloadPersistentStoreInfo& data);
 
-  // Called to update the history service about the path of a download.
-  // This is a 'fire and forget' query.
-  void UpdateDownloadPath(const FilePath& path, int64 db_handle);
-
-  // Permanently remove a download from the history system. This is a 'fire and
-  // forget' operation.
-  void RemoveDownload(int64 db_handle);
-
-  // Permanently removes all completed download from the history system within
-  // the specified range. This function does not delete downloads that are in
-  // progress or in the process of being cancelled. This is a 'fire and forget'
-  // operation. You can pass is_null times to get unbounded time in either or
-  // both directions.
-  void RemoveDownloadsBetween(base::Time remove_begin, base::Time remove_end);
+  // Permanently remove a set of downloads from the history system. This is a
+  // 'fire and forget' operation.
+  void RemoveDownloads(const std::set<int64>& handles);
 
   // Visit Segments ------------------------------------------------------------
 
   typedef base::Callback<void(Handle, std::vector<PageUsageData*>*)>
       SegmentQueryCallback;
 
   // Query usage data for all visit segments since the provided time.
   //
   // The request is performed asynchronously and can be cancelled by using the
   // returned handle.
@@ skipping 444 matching lines @@
   // The index used for quick history lookups.
   scoped_ptr<history::InMemoryURLIndex> in_memory_url_index_;
 
   scoped_refptr<ObserverListThreadSafe<history::VisitDatabaseObserver> >
       visit_database_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryService);
 };
 
 #endif  // CHROME_BROWSER_HISTORY_HISTORY_H_