Make DownloadHistory observe manager, items

chrome/browser/history/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 CHROME_BROWSER_HISTORY_HISTORY_BACKEND_H_
 #define CHROME_BROWSER_HISTORY_HISTORY_BACKEND_H_
 
 #include <string>
 #include <utility>
 
 #include "base/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/mru_cache.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/cancelable_request.h"
 #include "chrome/browser/history/archived_database.h"
 #include "chrome/browser/history/expire_history_backend.h"
 #include "chrome/browser/history/history_database.h"
 #include "chrome/browser/history/history_marshaling.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/history/text_database_manager.h"
 #include "chrome/browser/history/thumbnail_database.h"
 #include "chrome/browser/history/visit_tracker.h"
 #include "chrome/browser/search_engines/template_url_id.h"
 #include "sql/init_status.h"
 #include "ui/base/layout.h"
 
 class BookmarkService;
 class TestingProfile;
+struct DownloadPersistentStoreInfo;
 struct ThumbnailScore;
 
-namespace content {
-struct DownloadPersistentStoreInfo;
-}
-
 namespace history {
 #if defined(OS_ANDROID)
 class AndroidProviderBackend;
 #endif
 class CommitLaterTask;
 class HistoryPublisher;
 class VisitFilter;
 
 // The maximum number of icons URLs per page which can be stored in the
 // thumbnail database.
@@ skipping 253 matching lines @@
   void SetFaviconsOutOfDateForPage(const GURL& page_url);
 
   void CloneFavicons(const GURL& old_page_url, const GURL& new_page_url);
 
   void SetImportedFavicons(
       const std::vector<ImportedFaviconUsage>& favicon_usage);
 
   // Downloads -----------------------------------------------------------------
 
   void GetNextDownloadId(scoped_refptr<DownloadNextIdRequest> request);
-  void QueryDownloads(scoped_refptr<DownloadQueryRequest> request);
+  void QueryDownloads(const HistoryService::DownloadQueryCallback& callback);
   void CleanUpInProgressEntries();
-  void UpdateDownload(const content::DownloadPersistentStoreInfo& data);
-  void UpdateDownloadPath(const FilePath& path, int64 db_handle);
-  void CreateDownload(scoped_refptr<DownloadCreateRequest> request,
-                      int32 id,
-                      const content::DownloadPersistentStoreInfo& info);
-  void RemoveDownload(int64 db_handle);
-  void RemoveDownloadsBetween(const base::Time remove_begin,
-                              const base::Time remove_end);
-  void RemoveDownloads(const base::Time remove_end);
+  void UpdateDownload(const DownloadPersistentStoreInfo& data);
+  void CreateDownload(const DownloadPersistentStoreInfo& info,
+                      const HistoryService::DownloadCreateCallback& callback);
+  void GetVisibleVisitCountToHostSimple(
+      const GURL& url,
+      const HistoryService::GetVisibleVisitCountToHostSimpleCallback& callback);
+  void RemoveDownloads(const std::set<int64>& handles);
 
   // Segment usage -------------------------------------------------------------
 
   void QuerySegmentUsage(scoped_refptr<QuerySegmentUsageRequest> request,
                          const base::Time from_time,
                          int max_result_count);
   void DeleteOldSegmentData();
   void SetSegmentPresentationIndex(SegmentID segment_id, int index);
 
   // Keyword search terms ------------------------------------------------------
@@ skipping 543 matching lines @@
   // Used to provide the Android ContentProvider APIs.
   scoped_ptr<AndroidProviderBackend> android_provider_backend_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(HistoryBackend);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_HISTORY_BACKEND_H_