Notify CloseFile from Pepper to FileSystem.

webkit/chromeos/fileapi/remote_file_system_proxy.h

Index: webkit/chromeos/fileapi/remote_file_system_proxy.h
diff --git a/webkit/chromeos/fileapi/remote_file_system_proxy.h b/webkit/chromeos/fileapi/remote_file_system_proxy.h
index fbe3149dbc3fb53cf0d4e89566bcd98db0a042a2..c663b5eaf92a896287413168fc6a81b8c1a94634 100644
--- a/webkit/chromeos/fileapi/remote_file_system_proxy.h
+++ b/webkit/chromeos/fileapi/remote_file_system_proxy.h
@@ -92,6 +92,10 @@ class RemoteFileSystemProxyInterface :
       int flags,
       base::ProcessHandle peer_handle,
       const FileSystemOperationInterface::OpenFileCallback& callback) = 0;
+
+  // Notifies that a file opened by OpenFile (at |path|) is closed.
+  virtual void NotifyCloseFile(const FileSystemURL& url) = 0;
+
   // TODO(zelidrag): More methods to follow as we implement other parts of FSO.
 
  protected: