[FileAPI] Add file open ID and close callback

chrome/browser/chromeos/drive/file_system_proxy.h

 // Copyright (c) 2012 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_CHROMEOS_DRIVE_FILE_SYSTEM_PROXY_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_PROXY_H_
 
 #include "chrome/browser/chromeos/drive/file_errors.h"
 #include "webkit/fileapi/remote_file_system_proxy.h"
 
 namespace fileapi {
 class FileSystemURL;
 }
 
 namespace drive {
 
 class DriveEntryProto;
 class DriveFileSystemInterface;
 
 typedef std::vector<DriveEntryProto> DriveEntryProtoVector;
 
 // Implementation of File API's remote file system proxy for Drive file system.
 class FileSystemProxy : public fileapi::RemoteFileSystemProxyInterface {
  public:
+  using fileapi::RemoteFileSystemProxyInterface::OpenFileCallback;
+
   // |file_system| is the DriveFileSystem instance owned by DriveSystemService.
   explicit FileSystemProxy(DriveFileSystemInterface* file_system);
 
   // Detaches this instance from |file_system_|.
   // Method calls may result in no-op after calling this method.
   // This method must be called on UI thread.
   void DetachFromFileSystem();
 
   // fileapi::RemoteFileSystemProxyInterface overrides.
   virtual void GetFileInfo(
@@ skipping 36 matching lines @@
       const fileapi::FileSystemURL& url,
       const fileapi::FileSystemOperation::SnapshotFileCallback&
       callback) OVERRIDE;
   virtual void CreateWritableSnapshotFile(
       const fileapi::FileSystemURL& url,
       const fileapi::WritableSnapshotFile& callback) OVERRIDE;
   virtual void OpenFile(
       const fileapi::FileSystemURL& url,
       int file_flags,
       base::ProcessHandle peer_handle,
-      const fileapi::FileSystemOperation::OpenFileCallback&
-          callback) OVERRIDE;
+      const OpenFileCallback& callback) OVERRIDE;
   virtual void NotifyCloseFile(const fileapi::FileSystemURL& url) OVERRIDE;
   virtual void TouchFile(
       const fileapi::FileSystemURL& url,
       const base::Time& last_access_time,
       const base::Time& last_modified_time,
       const fileapi::FileSystemOperation::StatusCallback& callback)
           OVERRIDE;
 
  protected:
   virtual ~FileSystemProxy();
@@ skipping 76 matching lines @@
       const base::FilePath& virtual_path,
       const fileapi::FileSystemOperation::StatusCallback& callback,
       base::PlatformFileError truncate_result);
 
   // Invoked during OpenFile() operation when truncate or write flags are set.
   // This is called when a local modifiable cached file is ready for such
   // operation.
   void OnOpenFileForWriting(
       int file_flags,
       base::ProcessHandle peer_handle,
-      const fileapi::FileSystemOperation::OpenFileCallback& callback,
+      const OpenFileCallback& callback,
       FileError file_error,
       const base::FilePath& local_cache_path);
 
   // Invoked during OpenFile() operation when file create flags are set.
   void OnCreateFileForOpen(
       const base::FilePath& file_path,
       int file_flags,
       base::ProcessHandle peer_handle,
-      const fileapi::FileSystemOperation::OpenFileCallback& callback,
+      const OpenFileCallback& callback,
       FileError file_error);
 
   // Invoked during OpenFile() operation when base::PLATFORM_FILE_OPEN_TRUNCATED
   // flag is set. This is called when the truncation of a local cache file is
   // finished on FILE thread.
   void OnOpenAndTruncate(
       base::ProcessHandle peer_handle,
-      const fileapi::FileSystemOperation::OpenFileCallback& callback,
+      const OpenFileCallback& callback,
       base::PlatformFile* platform_file,
       base::PlatformFileError* truncate_result);
 
   DriveFileSystemInterface* file_system_;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_SYSTEM_PROXY_H_