[SyncFS] Replace SyncStatksCallbacks with SyncTaskToken in RemoteToLocalSyncer

chrome/browser/sync_file_system/drive_backend/remote_to_local_syncer.h

 // Copyright 2013 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_REMOTE_TO_LOCAL_SYNCER_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_REMOTE_TO_LOCAL_SYNCER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 88 matching lines @@
   // Else, if the tracker is a folder and it has needs_folder_listing flag:
   //   - Dispatch to HandleFolderContentListing()
   // Else, there should be no change to sync.
   //   - Dispatch to HandleOfflineSolvable()
   void ResolveRemoteChange(scoped_ptr<SyncTaskToken> token);
 
   // Handles missing remote metadata case.
   // Fetches remote metadata and updates MetadataDatabase by that.  The sync
   // operation itself will be deferred to the next sync round.
   // Note: if the file is not found, it should be handled as if deleted.
-  void HandleMissingRemoteMetadata(const SyncStatusCallback& callback);
-  void DidGetRemoteMetadata(const SyncStatusCallback& callback,
+  void HandleMissingRemoteMetadata(scoped_ptr<SyncTaskToken> token);
+  void DidGetRemoteMetadata(scoped_ptr<SyncTaskToken> token,
                             google_apis::GDataErrorCode error,
                             scoped_ptr<google_apis::FileResource> entry);
-  void DidUpdateDatabaseForRemoteMetadata(const SyncStatusCallback& callback,
+  void DidUpdateDatabaseForRemoteMetadata(scoped_ptr<SyncTaskToken> token,
                                           SyncStatusCode status);
 
   // This implements the body of the HandleNewFile and HandleContentUpdate.
   // If the file doesn't have corresponding local file:
   //   - Dispatch to DownloadFile.
   // Else, if the local file doesn't have local change:
   //   - Dispatch to DownloadFile if the local file is a regular file.
   //   - If the local file is a folder, handle this case as a conflict.  Lower
   //     the priority of the tracker, and defer further handling to
   //     local-to-remote change.
   // Else:
   //  # The file has local modification.
   //  - Handle this case as a conflict.  Lower the priority of the tracker, and
   //    defer further handling to local-to-remote change.
-  void DidPrepareForAddOrUpdateFile(const SyncStatusCallback& callback,
+  void DidPrepareForAddOrUpdateFile(scoped_ptr<SyncTaskToken> token,
                                     SyncStatusCode status);
 
   // Handles remotely added folder.  Needs Prepare() call.
   // TODO(tzik): Write details and implement this.
-  void HandleFolderUpdate(const SyncStatusCallback& callback);
-  void DidPrepareForFolderUpdate(const SyncStatusCallback& callback,
+  void HandleFolderUpdate(scoped_ptr<SyncTaskToken> token);
+  void DidPrepareForFolderUpdate(scoped_ptr<SyncTaskToken> token,
                                  SyncStatusCode status);
 
-  void HandleSyncRootDeletion(const SyncStatusCallback& callback);
+  void HandleSyncRootDeletion(scoped_ptr<SyncTaskToken> token);
 
   // Handles deleted remote file.  Needs Prepare() call.
   // If the deleted tracker is the sync-root:
   //  - TODO(tzik): Needs special handling.
   // Else, if the deleted tracker is a app-root:
   //  - TODO(tzik): Needs special handling.
   // Else, if the local file is already deleted:
   //  - Do nothing anymore to the local, call SyncCompleted().
   // Else, if the local file is modified:
   //  - Do nothing to the local file, call SyncCompleted().
   // Else, if the local file is not modified:
   //  - Delete local file.
   //  # Note: if the local file is a folder, delete recursively.
-  void HandleDeletion(const SyncStatusCallback& callback);
-  void DidPrepareForDeletion(const SyncStatusCallback& callback,
+  void HandleDeletion(scoped_ptr<SyncTaskToken> token);
+  void DidPrepareForDeletion(scoped_ptr<SyncTaskToken> token,
                              SyncStatusCode status);
 
   // Handles new file.  Needs Prepare() call.
-  void HandleContentUpdate(const SyncStatusCallback& callback);
+  void HandleContentUpdate(scoped_ptr<SyncTaskToken> token);
 
-  void ListFolderContent(const SyncStatusCallback& callback);
+  void ListFolderContent(scoped_ptr<SyncTaskToken> token);
   void DidListFolderContent(
-      const SyncStatusCallback& callback,
+      scoped_ptr<SyncTaskToken> token,
       scoped_ptr<FileIDList> children,
       google_apis::GDataErrorCode error,
       scoped_ptr<google_apis::FileList> file_list);
 
   void SyncCompleted(scoped_ptr<SyncTaskToken> token, SyncStatusCode status);
   void FinalizeSync(scoped_ptr<SyncTaskToken> token, SyncStatusCode status);
 
   void Prepare(const SyncStatusCallback& callback);
   void DidPrepare(const SyncStatusCallback& callback,
                   SyncStatusCode status,
                   const SyncFileMetadata& metadata,
                   const FileChangeList& changes);
 
-  void DeleteLocalFile(const SyncStatusCallback& callback);
-  void DownloadFile(const SyncStatusCallback& callback);
-  void DidDownloadFile(const SyncStatusCallback& callback,
+  void DeleteLocalFile(scoped_ptr<SyncTaskToken> token);
+  void DownloadFile(scoped_ptr<SyncTaskToken> token);
+  void DidDownloadFile(scoped_ptr<SyncTaskToken> token,
                        webkit_blob::ScopedFile file,
                        google_apis::GDataErrorCode error,
                        const base::FilePath&);
-  void DidApplyDownload(const SyncStatusCallback& callback,
+  void DidApplyDownload(scoped_ptr<SyncTaskToken> token,
                         webkit_blob::ScopedFile,
                         SyncStatusCode status);
 
-  void CreateFolder(const SyncStatusCallback& callback);
+  void CreateFolder(scoped_ptr<SyncTaskToken> token);
 
   // TODO(tzik): After we convert all callbacks to token-passing style,
   // drop this function.
   SyncStatusCallback SyncCompletedCallback(scoped_ptr<SyncTaskToken> token);
 
   drive::DriveServiceInterface* drive_service();
   MetadataDatabase* metadata_database();
   RemoteChangeProcessor* remote_change_processor();
 
   SyncEngineContext* sync_context_;  // Not owned.
@@ skipping 12 matching lines @@
 
   base::WeakPtrFactory<RemoteToLocalSyncer> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RemoteToLocalSyncer);
 };
 
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_REMOTE_TO_LOCAL_SYNCER_H_