[SyncFS] Replace leveldb classes with LevelDBWrapper

chrome/browser/sync_file_system/drive_backend/metadata_database_index_on_disk.h

Index: chrome/browser/sync_file_system/drive_backend/metadata_database_index_on_disk.h
diff --git a/chrome/browser/sync_file_system/drive_backend/metadata_database_index_on_disk.h b/chrome/browser/sync_file_system/drive_backend/metadata_database_index_on_disk.h
index 72193d19d23f8ca5f651971cd9ffd700a6a82af9..f9423804991e9f4c292cfba614a014bc9d589b99 100644
--- a/chrome/browser/sync_file_system/drive_backend/metadata_database_index_on_disk.h
+++ b/chrome/browser/sync_file_system/drive_backend/metadata_database_index_on_disk.h
@@ -13,15 +13,12 @@
 #include "chrome/browser/sync_file_system/drive_backend/metadata_database_index_interface.h"
 #include "chrome/browser/sync_file_system/drive_backend/tracker_id_set.h"
 
-namespace leveldb {
-class DB;
-}
-
 namespace sync_file_system {
 namespace drive_backend {
 
 class FileMetadata;
 class FileTracker;
+class LevelDBWrapper;
 class ServiceMetadata;
 struct DatabaseContents;
 // TODO(peria): Migrate implementation of ParentIDAndTitle structure from
@@ -31,8 +28,7 @@ struct ParentIDAndTitle;
 // Maintains indexes of MetadataDatabase on disk.
 class MetadataDatabaseIndexOnDisk : public MetadataDatabaseIndexInterface {
  public:
-  static scoped_ptr<MetadataDatabaseIndexOnDisk>
-      Create(leveldb::DB* db, leveldb::WriteBatch* batch);
+  static scoped_ptr<MetadataDatabaseIndexOnDisk>  Create(LevelDBWrapper* db);
 
   virtual ~MetadataDatabaseIndexOnDisk();
 
@@ -41,14 +37,10 @@ class MetadataDatabaseIndexOnDisk : public MetadataDatabaseIndexInterface {
       const std::string& file_id, FileMetadata* metadata) const OVERRIDE;
   virtual bool GetFileTracker(
       int64 tracker_id, FileTracker* tracker) const OVERRIDE;
-  virtual void StoreFileMetadata(
-      scoped_ptr<FileMetadata> metadata, leveldb::WriteBatch* batch) OVERRIDE;
-  virtual void StoreFileTracker(
-      scoped_ptr<FileTracker> tracker, leveldb::WriteBatch* batch) OVERRIDE;
-  virtual void RemoveFileMetadata(
-      const std::string& file_id, leveldb::WriteBatch* batch) OVERRIDE;
-  virtual void RemoveFileTracker(
-      int64 tracker_id, leveldb::WriteBatch* batch) OVERRIDE;
+  virtual void StoreFileMetadata(scoped_ptr<FileMetadata> metadata) OVERRIDE;
+  virtual void StoreFileTracker(scoped_ptr<FileTracker> tracker) OVERRIDE;
+  virtual void RemoveFileMetadata(const std::string& file_id) OVERRIDE;
+  virtual void RemoveFileTracker(int64 tracker_id) OVERRIDE;
   virtual TrackerIDSet GetFileTrackerIDsByFileID(
       const std::string& file_id) const OVERRIDE;
   virtual int64 GetAppRootTracker(const std::string& app_id) const OVERRIDE;
@@ -59,19 +51,15 @@ class MetadataDatabaseIndexOnDisk : public MetadataDatabaseIndexInterface {
   virtual std::string PickMultiTrackerFileID() const OVERRIDE;
   virtual ParentIDAndTitle PickMultiBackingFilePath() const OVERRIDE;
   virtual int64 PickDirtyTracker() const OVERRIDE;
-  virtual void DemoteDirtyTracker(
-      int64 tracker_id, leveldb::WriteBatch* batch) OVERRIDE;
+  virtual void DemoteDirtyTracker(int64 tracker_id) OVERRIDE;
   virtual bool HasDemotedDirtyTracker() const OVERRIDE;
-  virtual void PromoteDemotedDirtyTrackers(leveldb::WriteBatch* batch) OVERRIDE;
+  virtual void PromoteDemotedDirtyTrackers() OVERRIDE;
   virtual size_t CountDirtyTracker() const OVERRIDE;
   virtual size_t CountFileMetadata() const OVERRIDE;
   virtual size_t CountFileTracker() const OVERRIDE;
-  virtual void SetSyncRootTrackerID(int64 sync_root_id,
-                                    leveldb::WriteBatch* batch) const OVERRIDE;
-  virtual void SetLargestChangeID(int64 largest_change_id,
-                                  leveldb::WriteBatch* batch) const OVERRIDE;
-  virtual void SetNextTrackerID(int64 next_tracker_id,
-                                leveldb::WriteBatch* batch) const OVERRIDE;
+  virtual void SetSyncRootTrackerID(int64 sync_root_id) const OVERRIDE;
+  virtual void SetLargestChangeID(int64 largest_change_id) const OVERRIDE;
+  virtual void SetNextTrackerID(int64 next_tracker_id) const OVERRIDE;
   virtual int64 GetSyncRootTrackerID() const OVERRIDE;
   virtual int64 GetLargestChangeID() const OVERRIDE;
   virtual int64 GetNextTrackerID() const OVERRIDE;
@@ -80,7 +68,7 @@ class MetadataDatabaseIndexOnDisk : public MetadataDatabaseIndexInterface {
   virtual std::vector<std::string> GetAllMetadataIDs() const OVERRIDE;
 
   // Builds on-disk indexes from FileTracker entries on disk.
-  void BuildTrackerIndexes(leveldb::WriteBatch* batch);
+  void BuildTrackerIndexes();
 
  private:
   enum NumEntries {
@@ -89,43 +77,31 @@ class MetadataDatabaseIndexOnDisk : public MetadataDatabaseIndexInterface {
     MULTIPLE,  // Two or more entires are found.
   };
 
-  explicit MetadataDatabaseIndexOnDisk(leveldb::DB* db);
+  explicit MetadataDatabaseIndexOnDisk(LevelDBWrapper* db);
 
   // Maintain indexes from AppIDs to tracker IDs.
-  void AddToAppIDIndex(const FileTracker& new_tracker,
-                       leveldb::WriteBatch* batch);
+  void AddToAppIDIndex(const FileTracker& new_tracker);
   void UpdateInAppIDIndex(const FileTracker& old_tracker,
-                          const FileTracker& new_tracker,
-                          leveldb::WriteBatch* batch);
-  void RemoveFromAppIDIndex(const FileTracker& tracker,
-                            leveldb::WriteBatch* batch);
+                          const FileTracker& new_tracker);
+  void RemoveFromAppIDIndex(const FileTracker& tracker);
 
   // Maintain indexes from remote file IDs to tracker ID sets.
-  void AddToFileIDIndexes(const FileTracker& new_tracker,
-                          leveldb::WriteBatch* batch);
+  void AddToFileIDIndexes(const FileTracker& new_tracker);
   void UpdateInFileIDIndexes(const FileTracker& old_tracker,
-                             const FileTracker& new_tracker,
-                             leveldb::WriteBatch* batch);
-  void RemoveFromFileIDIndexes(const FileTracker& tracker,
-                               leveldb::WriteBatch* batch);
+                             const FileTracker& new_tracker);
+  void RemoveFromFileIDIndexes(const FileTracker& tracker);
 
   // Maintain indexes from path indexes to tracker ID sets
-  void AddToPathIndexes(const FileTracker& new_tracker,
-                        leveldb::WriteBatch* batch);
+  void AddToPathIndexes(const FileTracker& new_tracker);
   void UpdateInPathIndexes(const FileTracker& old_tracker,
-                           const FileTracker& new_tracker,
-                           leveldb::WriteBatch* batch);
-  void RemoveFromPathIndexes(const FileTracker& tracker,
-                             leveldb::WriteBatch* batch);
+                           const FileTracker& new_tracker);
+  void RemoveFromPathIndexes(const FileTracker& tracker);
 
   // Maintain dirty tracker IDs.
-  void AddToDirtyTrackerIndexes(const FileTracker& new_tracker,
-                                leveldb::WriteBatch* batch);
+  void AddToDirtyTrackerIndexes(const FileTracker& new_tracker);
   void UpdateInDirtyTrackerIndexes(const FileTracker& old_tracker,
-                                   const FileTracker& new_tracker,
-                                   leveldb::WriteBatch* batch);
-  void RemoveFromDirtyTrackerIndexes(const FileTracker& tracker,
-                                     leveldb::WriteBatch* batch);
+                                   const FileTracker& new_tracker);
+  void RemoveFromDirtyTrackerIndexes(const FileTracker& tracker);
 
   // Returns a TrackerIDSet built from IDs which are found with given key
   // and key prefix.
@@ -141,32 +117,28 @@ class MetadataDatabaseIndexOnDisk : public MetadataDatabaseIndexInterface {
   void AddToTrackerIDSetWithPrefix(
       const std::string& active_tracker_key,
       const std::string& key_prefix,
-      const FileTracker& tracker,
-      leveldb::WriteBatch* batch);
+      const FileTracker& tracker);
 
   // Returns true if |tracker_id| is removed successfully.  If no other entries
   // are stored with |key_prefix|, the entry for |active_key| is also removed.
   bool EraseInTrackerIDSetWithPrefix(
       const std::string& active_tracker_key,
       const std::string& key_prefix,
-      int64 tracker_id,
-      leveldb::WriteBatch* batch);
+      int64 tracker_id);
 
   // Adds an entry for |active_key| on DB, if |tracker_id| has an entry with
   // |key_prefix|.
   void ActivateInTrackerIDSetWithPrefix(
       const std::string& active_tracker_key,
       const std::string& key_prefix,
-      int64 tracker_id,
-      leveldb::WriteBatch* batch);
+      int64 tracker_id);
 
   // Removes an entry for |active_key| on DB, if the value of |active_key| key
   // is |tracker_id|.
   void DeactivateInTrackerIDSetWithPrefix(
       const std::string& active_tracker_key,
       const std::string& key_prefix,
-      int64 tracker_id,
-      leveldb::WriteBatch* batch);
+      int64 tracker_id);
 
   // Checks if |db_| has an entry whose key is |key|.
   bool DBHasKey(const std::string& key);
@@ -175,7 +147,7 @@ class MetadataDatabaseIndexOnDisk : public MetadataDatabaseIndexInterface {
   // Entries for |ignored_id| are not counted in.
   NumEntries CountWithPrefix(const std::string& prefix, int64 ignored_id);
 
-  leveldb::DB* db_;  // Not owned.
+  LevelDBWrapper* db_;  // Not owned.
   scoped_ptr<ServiceMetadata> service_metadata_;
 
   DISALLOW_COPY_AND_ASSIGN(MetadataDatabaseIndexOnDisk);