Wired support for file truncating with RemoteFileSystemOperation::OpenFile() method (case when base…

webkit/chromeos/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_interface.h"
@@ skipping 74 matching lines @@
       const GURL& path,
       const WritableSnapshotFile& callback) = 0;
 
   // Opens file for a give |path| with specified |flags| (see
   // base::PlatformFileFlags for details).
   virtual void OpenFile(
       const GURL& path,
       int flags,
       base::ProcessHandle peer_handle,
       const FileSystemOperationInterface::OpenFileCallback& callback) = 0;
+
+  // Notifies file system than file at |path| has been closed.
+  virtual void NotifyFileClosed(
+      const GURL& path,
+      const FileSystemOperationInterface::StatusCallback& callback) = 0;
+
   // TODO(zelidrag): More methods to follow as we implement other parts of FSO.
 
  protected:
   friend class base::RefCountedThreadSafe<RemoteFileSystemProxyInterface>;
   virtual ~RemoteFileSystemProxyInterface() {}
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_CHROMEOS_FILEAPI_REMOTE_FILE_SYSTEM_PROXY_H_