[SyncFS] Replace leveldb classes with LevelDBWrapper

chrome/browser/sync_file_system/drive_backend/metadata_database_index_interface.h

 // Copyright 2014 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_SYNC_FILE_SYSTEM_DRIVE_BACKEND_METADATA_DATABASE_INDEX_INTERFACE_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_METADATA_DATABASE_INDEX_INTERFACE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 
-namespace leveldb {
-class WriteBatch;
-}
-
 namespace sync_file_system {
 namespace drive_backend {
 
 class FileMetadata;
 class FileTracker;
 class TrackerIDSet;
 
 struct ParentIDAndTitle {
   int64 parent_id;
   std::string title;
@@ skipping 16 matching lines @@
   virtual bool GetFileMetadata(
       const std::string& file_id, FileMetadata* metadata) const = 0;
 
   // Returns true if FileTracker identified by |tracker_id| exists.
   // If |tracker| is not NULL, the FileTracker is copied to it.
   virtual bool GetFileTracker(
       int64 tracker_id, FileTracker* tracker) const = 0;
 
   // Stores |metadata| and updates indexes.
   // This overwrites existing FileMetadata for the same |file_id|.
-  virtual void StoreFileMetadata(
-      scoped_ptr<FileMetadata> metadata, leveldb::WriteBatch* batch) = 0;
+  virtual void StoreFileMetadata(scoped_ptr<FileMetadata> metadata) = 0;
 
   // Stores |tracker| and updates indexes.
   // This overwrites existing FileTracker for the same |tracker_id|.
-  virtual void StoreFileTracker(
-      scoped_ptr<FileTracker> tracker, leveldb::WriteBatch* batch) = 0;
+  virtual void StoreFileTracker(scoped_ptr<FileTracker> tracker) = 0;
 
   // Removes FileMetadata identified by |file_id| from indexes.
-  virtual void RemoveFileMetadata(
-      const std::string& file_id, leveldb::WriteBatch* batch) = 0;
+  virtual void RemoveFileMetadata(const std::string& file_id) = 0;
 
   // Removes FileTracker identified by |tracker_id| from indexes.
-  virtual void RemoveFileTracker(
-      int64 tracker_id, leveldb::WriteBatch* batch) = 0;
+  virtual void RemoveFileTracker(int64 tracker_id) = 0;
 
   // Returns a set of FileTracker that have |file_id| as its own.
   virtual TrackerIDSet GetFileTrackerIDsByFileID(
       const std::string& file_id) const = 0;
 
   // Returns an app-root tracker identified by |app_id|.  Returns 0 if not
   // found.
   virtual int64 GetAppRootTracker(const std::string& app_id) const = 0;
 
   // Returns a set of FileTracker that have |parent_tracker_id| and |title|.
   virtual TrackerIDSet GetFileTrackerIDsByParentAndTitle(
       int64 parent_tracker_id,
       const std::string& title) const = 0;
 
   virtual std::vector<int64> GetFileTrackerIDsByParent(
       int64 parent_tracker_id) const = 0;
 
   // Returns the |file_id| of a file that has multiple trackers.
   virtual std::string PickMultiTrackerFileID() const = 0;
 
   // Returns a pair of |parent_tracker_id| and |title| that has multiple file
   // at the path.
   virtual ParentIDAndTitle PickMultiBackingFilePath() const = 0;
 
   // Returns a FileTracker whose |dirty| is set and which isn't demoted.
   // Returns 0 if not found.
   virtual int64 PickDirtyTracker() const = 0;
 
   // Demotes a dirty tracker.
-  virtual void DemoteDirtyTracker(
-      int64 tracker_id, leveldb::WriteBatch* batch) = 0;
+  virtual void DemoteDirtyTracker(int64 tracker_id) = 0;
 
   virtual bool HasDemotedDirtyTracker() const = 0;
 
   // Promotes all demoted dirty trackers to normal dirty trackers.
-  virtual void PromoteDemotedDirtyTrackers(leveldb::WriteBatch* batch) = 0;
+  virtual void PromoteDemotedDirtyTrackers() = 0;
 
   virtual size_t CountDirtyTracker() const = 0;
   virtual size_t CountFileMetadata() const = 0;
   virtual size_t CountFileTracker() const = 0;
 
-  virtual void SetSyncRootTrackerID(int64 sync_root_id,
-                                    leveldb::WriteBatch* batch) const = 0;
-  virtual void SetLargestChangeID(int64 largest_change_id,
-                                  leveldb::WriteBatch* batch) const = 0;
-  virtual void SetNextTrackerID(int64 next_tracker_id,
-                                leveldb::WriteBatch* batch) const = 0;
+  virtual void SetSyncRootTrackerID(int64 sync_root_id) const = 0;
+  virtual void SetLargestChangeID(int64 largest_change_id) const = 0;
+  virtual void SetNextTrackerID(int64 next_tracker_id) const = 0;
   virtual int64 GetSyncRootTrackerID() const = 0;
   virtual int64 GetLargestChangeID() const = 0;
   virtual int64 GetNextTrackerID() const = 0;
   virtual std::vector<std::string> GetRegisteredAppIDs() const = 0;
   virtual std::vector<int64> GetAllTrackerIDs() const = 0;
   virtual std::vector<std::string> GetAllMetadataIDs() const = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MetadataDatabaseIndexInterface);
 };
 
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_METADATA_DATABASE_INDEX_INTERFACE_H_