SyncFS: Introduce SyncFileSystemBackend

chrome/browser/media_galleries/fileapi/media_file_system_backend.h

 // Copyright (c) 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_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "webkit/browser/fileapi/file_system_backend.h"
@@ skipping 21 matching lines @@
   MediaFileSystemBackend(
       const base::FilePath& profile_path,
       base::SequencedTaskRunner* media_task_runner);
   virtual ~MediaFileSystemBackend();
 
   static bool CurrentlyOnMediaTaskRunnerThread();
   static scoped_refptr<base::SequencedTaskRunner> MediaTaskRunner();
 
   // FileSystemBackend implementation.
   virtual bool CanHandleType(fileapi::FileSystemType type) const OVERRIDE;
+  virtual void Initialize(const fileapi::FileSystemContext* context) OVERRIDE;
   virtual void InitializeFileSystem(
       const GURL& origin_url,
       fileapi::FileSystemType type,
       fileapi::OpenFileSystemMode mode,
       fileapi::FileSystemContext* context,
       const InitializeFileSystemCallback& callback) OVERRIDE;
   virtual fileapi::FileSystemFileUtil* GetFileUtil(
       fileapi::FileSystemType type) OVERRIDE;
   virtual fileapi::AsyncFileUtil* GetAsyncFileUtil(
       fileapi::FileSystemType type) OVERRIDE;
@@ skipping 32 matching lines @@
   scoped_ptr<fileapi::AsyncFileUtil> picasa_file_util_;
   scoped_ptr<fileapi::AsyncFileUtil> itunes_file_util_;
 #endif  // defined(OS_WIN) || defined(OS_MACOSX)
 
   DISALLOW_COPY_AND_ASSIGN(MediaFileSystemBackend);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_