Abstract history dependencies on bookmarks through HistoryClient

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 <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/containers/mru_cache.h"
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/memory_pressure_listener.h"
 #include "base/memory/scoped_ptr.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/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;
 class TypedUrlSyncableService;
 struct ThumbnailScore;
 
 namespace history {
 #if defined(OS_ANDROID)
 class AndroidProviderBackend;
 #endif
 
 class CommitLaterTask;
+class HistoryClient;
 class VisitFilter;
 struct DownloadRow;
 
 // The maximum number of icons URLs per page which can be stored in the
 // thumbnail database.
 static const size_t kMaxFaviconsPerPage = 8;
 
 // The maximum number of bitmaps for a single icon URL which can be stored in
 // the thumbnail database.
 static const size_t kMaxFaviconBitmapsPerIconURL = 8;
@@ skipping 48 matching lines @@
   };
 
   // Init must be called to complete object creation. This object can be
   // constructed on any thread, but all other functions including Init() must
   // be called on the history thread.
   //
   // |history_dir| is the directory where the history files will be placed.
   // See the definition of BroadcastNotificationsCallback above. This function
   // takes ownership of the callback pointer.
   //
-  // |bookmark_service| is used to determine bookmarked URLs when deleting and
+  // |history_client| is used to determine bookmarked URLs when deleting and
   // may be NULL.
   //
   // This constructor is fast and does no I/O, so can be called at any time.
   HistoryBackend(const base::FilePath& history_dir,
                  Delegate* delegate,
-                 BookmarkService* bookmark_service);
+                 HistoryClient* history_client);
 
   // Must be called after creation but before any objects are created. If this
   // fails, all other functions will fail as well. (Since this runs on another
   // thread, we don't bother returning failure.)
   //
   // |languages| gives a list of language encodings with which the history
   // URLs and omnibox searches are interpreted.
   // |force_fail| can be set during unittests to unconditionally fail to init.
   void Init(const std::string& languages, bool force_fail);
 
@@ skipping 664 matching lines @@
   // Deletes all information in the history database, except for the supplied
   // set of URLs in the URL table (these should correspond to the bookmarked
   // URLs).
   //
   // The IDs of the URLs may change.
   bool ClearAllMainHistory(const URLRows& kept_urls);
 
   // Deletes the FTS index database files, which are no longer used.
   void DeleteFTSIndexDatabases();
 
-  // Returns the BookmarkService, blocking until it is loaded. This may return
-  // NULL during testing.
-  BookmarkService* GetBookmarkService();
-
   // Notify any observers of an addition to the visit database.
   void NotifyVisitObservers(const VisitRow& visit);
 
   // Data ----------------------------------------------------------------------
 
   // Delegate. See the class definition above for more information. This will
   // be NULL before Init is called and after Cleanup, but is guaranteed
   // non-NULL in between.
   scoped_ptr<Delegate> delegate_;
 
@@ skipping 43 matching lines @@
   VisitTracker tracker_;
 
   // A boolean variable to track whether we have already purged obsolete segment
   // data.
   bool segment_queried_;
 
   // HistoryDBTasks to run. Be sure to AddRef when adding, and Release when
   // done.
   std::list<HistoryDBTaskRequest*> db_task_requests_;
 
-  // Used to determine if a URL is bookmarked. This is owned by the Profile and
-  // may be NULL (during testing).
-  //
-  // Use GetBookmarkService to access this, which makes sure the service is
-  // loaded.
-  BookmarkService* bookmark_service_;
+  // Used to determine if a URL is bookmarked; may be NULL.
+  HistoryClient* history_client_;
 
 #if defined(OS_ANDROID)
   // Used to provide the Android ContentProvider APIs.
   scoped_ptr<AndroidProviderBackend> android_provider_backend_;
 
   // Used to provide UMA on the number of page visits that are to the most
   // visited URLs. This is here because the backend both has access to this
   // information and is notified of page visits. The top sites service should
   // be used instead whenever possible.
   std::map<GURL, int> most_visited_urls_map_;
 #endif
 
   // Used to manage syncing of the typed urls datatype. This will be NULL
   // before Init is called.
   scoped_ptr<TypedUrlSyncableService> typed_url_syncable_service_;
 
   // Listens for the system being under memory pressure.
   scoped_ptr<base::MemoryPressureListener> memory_pressure_listener_;
 
   DISALLOW_COPY_AND_ASSIGN(HistoryBackend);
 };
 
 }  // namespace history
 
 #endif  // CHROME_BROWSER_HISTORY_HISTORY_BACKEND_H_