SyncFS: Introduce SyncFileSystemBackend

webkit/browser/fileapi/syncable/syncable_file_system_operation.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 WEBKIT_BROWSER_FILEAPI_SYNCABLE_SYNCABLE_FILE_SYSTEM_OPERATION_H_
 #define WEBKIT_BROWSER_FILEAPI_SYNCABLE_SYNCABLE_FILE_SYSTEM_OPERATION_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 69 matching lines @@
   virtual void CopyInForeignFile(const base::FilePath& src_local_disk_path,
                                  const fileapi::FileSystemURL& dest_url,
                                  const StatusCallback& callback) OVERRIDE;
 
   using base::SupportsWeakPtr<SyncableFileSystemOperation>::AsWeakPtr;
 
  private:
   typedef SyncableFileSystemOperation self;
   class QueueableTask;
 
-  // Only FileSystemBackends can create a new operation directly.
-  friend class fileapi::SandboxFileSystemBackend;
-  friend class SandboxFileSystemBackend;
+  // Only SyncFileSystemBackend can create a new operation directly.
+  friend class SyncFileSystemBackend;
   SyncableFileSystemOperation(
       const fileapi::FileSystemURL& url,
       fileapi::FileSystemContext* file_system_context,
       scoped_ptr<fileapi::FileSystemOperationContext> operation_context);
   fileapi::LocalFileSystemOperation* NewOperation();
 
   void DidFinish(base::PlatformFileError status);
   void DidWrite(const WriteCallback& callback,
                 base::PlatformFileError result,
                 int64 bytes,
@@ skipping 10 matching lines @@
   StatusCallback completion_callback_;
 
   bool is_directory_operation_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncableFileSystemOperation);
 };
 
 }  // namespace sync_file_system
 
 #endif  // WEBKIT_BROWSER_FILEAPI_SYNCABLE_SYNCABLE_FILE_SYSTEM_OPERATION_H_