[FileAPI] Add file open ID and close callback

webkit/fileapi/remote_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 WEBKIT_CHROMEOS_FILEAPI_REMOTE_FILE_SYSTEM_PROXY_H_
 #define WEBKIT_CHROMEOS_FILEAPI_REMOTE_FILE_SYSTEM_PROXY_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "webkit/fileapi/file_system_operation.h"
 
 namespace fileapi {
 
 typedef base::Callback<
     void(base::PlatformFileError result,
          const base::FilePath& platform_path,
          const scoped_refptr<webkit_blob::ShareableFileReference>& file_ref)>
     WritableSnapshotFile;
 
 // The interface class for remote file system proxy.
 class RemoteFileSystemProxyInterface :
     public base::RefCountedThreadSafe<RemoteFileSystemProxyInterface> {
  public:
+  // Used for OpenFile(). |result| is the return code of the operation.
+  typedef base::Callback<
+      void(base::PlatformFileError result,
+           base::PlatformFile file,
+           base::ProcessHandle peer_handle)> OpenFileCallback;
+
+
   // Gets the file or directory info for given|path|.
   virtual void GetFileInfo(const FileSystemURL& url,
       const FileSystemOperation::GetMetadataCallback& callback) = 0;
 
   // Copies a file or directory from |src_url| to |dest_url|. If
   // |src_url| is a directory, the contents of |src_url| are copied to
   // |dest_url| recursively. A new file or directory is created at
   // |dest_url| as needed.
   virtual void Copy(
       const FileSystemURL& src_url,
@@ skipping 57 matching lines @@
   virtual void CreateWritableSnapshotFile(
       const FileSystemURL& url,
       const WritableSnapshotFile& callback) = 0;
 
   // Opens file for a given |url| with specified |flags| (see
   // base::PlatformFileFlags for details).
   virtual void OpenFile(
       const FileSystemURL& url,
       int flags,
       base::ProcessHandle peer_handle,
-      const FileSystemOperation::OpenFileCallback& callback) = 0;
+      const OpenFileCallback& callback) = 0;
 
   // Notifies that a file opened by OpenFile (at |path|) is closed.
   virtual void NotifyCloseFile(const FileSystemURL& url) = 0;
 
   // Modifies the timestamp of a given |url| to |last_access_time| and
   // |last_modified_time|. Note that unlike 'touch' command of Linux, it
   // does not create a new file.
   virtual void TouchFile(
       const fileapi::FileSystemURL& url,
       const base::Time& last_access_time,
       const base::Time& last_modified_time,
       const FileSystemOperation::StatusCallback& callback) = 0;
 
  protected:
   friend class base::RefCountedThreadSafe<RemoteFileSystemProxyInterface>;
   virtual ~RemoteFileSystemProxyInterface() {}
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_CHROMEOS_FILEAPI_REMOTE_FILE_SYSTEM_PROXY_H_