[ew] Add basic classes.

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 <string>
 
 #include "base/callback.h"
@@ skipping 43 matching lines @@
       const base::Callback<void(base::File::Error result)>& callback);
 
   // FileSystemBackend implementation.
   virtual bool CanHandleType(fileapi::FileSystemType type) const OVERRIDE;
   virtual void Initialize(fileapi::FileSystemContext* context) OVERRIDE;
   virtual void ResolveURL(const fileapi::FileSystemURL& url,
                           fileapi::OpenFileSystemMode mode,
                           const OpenFileSystemCallback& callback) OVERRIDE;
   virtual fileapi::AsyncFileUtil* GetAsyncFileUtil(
       fileapi::FileSystemType type) OVERRIDE;
+  virtual fileapi::WatcherManager* GetWatcherManager(
+      fileapi::FileSystemType type) OVERRIDE;
   virtual fileapi::CopyOrMoveFileValidatorFactory*
   GetCopyOrMoveFileValidatorFactory(
       fileapi::FileSystemType type,
       base::File::Error* error_code) OVERRIDE;
   virtual fileapi::FileSystemOperation* CreateFileSystemOperation(
       const fileapi::FileSystemURL& url,
       fileapi::FileSystemContext* context,
       base::File::Error* error_code) const OVERRIDE;
   virtual bool SupportsStreaming(
       const fileapi::FileSystemURL& url) const OVERRIDE;
@@ skipping 25 matching lines @@
   scoped_ptr<fileapi::AsyncFileUtil> itunes_file_util_;
 #endif  // defined(OS_WIN) || defined(OS_MACOSX)
 #if defined(OS_MACOSX)
   scoped_ptr<fileapi::AsyncFileUtil> iphoto_file_util_;
 #endif  // defined(OS_MACOSX)
 
   DISALLOW_COPY_AND_ASSIGN(MediaFileSystemBackend);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MEDIA_FILE_SYSTEM_BACKEND_H_